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| 1 | Evolution of planetary boundary layer under different weather conditions,and its impact on aerosol concentrations显示文摘一个领域实验在天津被进行,从 2010 年 9 月 930 日的中国,在表面空气污染物质上集中了于行星的边界层(PBL ) 和它的影响的进化。实验使用了三台遥感仪器,风侧面雷达( WPR ),微波辐射计( MWR )和微脉搏的激光雷达( MPL ),到检测风,温度,和喷雾器 backscattering 系数并且到的垂直侧面测量表面污染物质的垂直侧面(喷雾器,公司, SO2 , NOx ),并且也从 255-m 收集了声音的风速表数据气象学的塔。把大小基于这些, PBL 的进化被估计。平均 PBL 高度在夜间期间在 noon/afternoon-time,和 200300 m 期间是大约 10001300 m。PBL 高度和喷雾器集中是相关反的在期间清楚并且薄雾条件。当平均喷雾器集中分别地是在薄雾和晴朗天空条件下面的 52 和 17 g/m3 时,平均最大的 PBL 高度是 1.08 和 1.70 km。太阳的放射上的喷雾器和云的影响基于从 255-m 收集的声音的风速表数据被观察气象学的塔。当 PBL 的镇压结构进一步削弱了污染物质的散开时,热流动被发现被薄雾(重污染) 或云显著地减少了,它趋于压抑 PBL 的发展,导致重污染。这个可能的积极反馈周期(更多的喷雾器降低 PBL 高度更多的喷雾器) 将在大城市为重地面污染导致一个加速过程。 | Jiannong Quan Yang Gao Qiang Zhang Xuexi Tie Junji Cao Suqin Han Junwang Meng Pengfei Chen Delong Zhao | 2013 | Particuology2013，11，1： | 51 |
| 2 | Preparation and anisotropic properties of textured structural ceramics: A review显示文摘Ceramics are usually composed of randomly oriented grains and intergranular phases, so their properties are the statistical average along each direction and show isotropy corresponding to the uniform microstructures. Some methods have been developed to achieve directional grain arrangement and preferred orientation growth during ceramic preparation, and then textured ceramics with anisotropic properties are obtained. Texture microstructures give particular properties to ceramics along specific directions, which can effectively expand their application fields. In this review, typical texturing techniques suitable for ceramic materials, such as hot working, magnetic alignment, and templated grain growth(TGG), are discussed. Several typical textured structural ceramics including α-Al2O3 and related nacre bioinspired ceramics, Si3N4 and SiAlON, h-BN, MB2 matrix ultra-high temperature ceramics, MAX phases and their anisotropic properties are presented. | Zhuo ZHANG Xiaoming DUAN Baofu QIU Zhihua YANG Delong CAI Peigang HE Dechang JIA Yu ZHOU | 2019 | Journal of Advanced Ceramics2019，8，3： | 14 |
| 3 | Theoretical and numerical research of wire array Z-pinch and dynamic hohlraum at IAPCM显示文摘Dense Z-pinch plasmas are powerful and energy-efficient laboratory sources of X-rays,and show the possibility to drive inertial confinement fusion(ICF).Recent advances in wire-array Z-pinch and Z-pinch dynamic hohlraum(ZPDH)researches at the Institute of Applied Physics and Computational Mathematics are presented in this paper.Models are setup to study different physical processes.A full circuit model(FCM)was used to study the coupling between Z-pinch implosion and generator discharge.A mass injection model with azimuthal modulation was setup to simulate the wire-array plasma initiation,and the two-dimensional MHD code MARED was developed to investigate the Z-pinch implosion,MRT instability,stagnation and radiation.Implosions of nested and quasi-spherical wire arrays were also investigated theoretically and numerically.Key processes of ZPDH,such as the arrayefoam interaction,formation of the hohlraum radiation,as well as the following capsule ablation and implosion,were analyzed with different radiation magneto-hydrodynamics(RMHD)codes.An integrated 2D RMHD simulation of dynamic hohlraum driven capsule implosion provides us the physical insights of wire-array plasma acceleration,shock generation and propagation,hohlraum formation,radiation ablation,and fuel compression. | Ning Ding Yang Zhang Delong Xiao Jiming Wu Zihuan Dai Li Yin Zhiming Gao Shunkai Sun Chuang Xue Cheng Ning Xiaojian Shu Jianguo Wang | 2016 | Matter and Radiation at Extremes2016，1，3： | 7 |
| 4 | Overcoming Resistance to Drugs Targeting KRAS^(G12C) Mutation显示文摘Activating KRAS mutations are present in 25%of human cancer.Although oncogenic Ras was deemed“undruggable”in the past,recent efforts led to the development of pharmacological inhibitors targeting the KRAS^(G12C) mutant,which have shown promise in early clinical trials.The development of allele-specific K-Ras^(G12C) inhibitors marked a new chapter in targeting oncogenic KRAS mutant in cancer.However,drug resistance against these new drugs will likely limit their efficacy in the clinic.Genome-wide approaches have been used to interrogate the mechanisms of resistance to K-Ras^(G12C ) inhibitors,which would facilitate the development of therapeutics overcoming drug resistance.This article reviews the latest progress in resistance to K-Ras^(G12C)-targeted therapies and aims to provide insight in future research targeting drug resistance in cancer. | Delong Jiao Shengyu Yang | 2020 | The Innovation2020，1，2： | 3 |
| 5 | Epoxidized methyl ricinoleate bio-plasticizer with a pendant acetate ester for PVC artificial material:circumventing existing limit on achievable migration resistance显示文摘Processing polyvinyl chloride(PVC)artificial material requires plasticizer that softens the PVC coating.Currently,utilizing unsaturated fatty acid methyl esters to obtain epoxidized fatty acid methyl ester(EFAME)bio-plasticizers constitutes an environmentally responsible solution to substitute conventional ortho-phthalates that are endocrine disruptors or probable carcinogens.However,commercial EFAMEs,even with the highest epoxy value(ca.5.5-5.8%)so far,still suffer from fast leaching from the PVC matrix,burdening the environment and shortening lifespan of the artificial material.Here,we report a proof-of-principle demonstration of a new strategy to obtain migration-resistant EFAME that harnesses the midchain hydroxyl of methyl ricinoleate and covalently attachment of a pendant acetate ester.Despite a low epoxy value(3.0%),the engineered bio-plasticizer displays significantly suppressed migration in multiple scenarios compared with one conventional EFAME with much higher epoxy value(5.8%).Circumventing the limit confronting previous strategy that highlights the sole contribution of epoxy value to achievable migration resistance,the rationale herein may provide guidance for designing new EFAMEs with comparable performance to ortho-phthalates,thus bringing the old and oft-maligned PVC artificial material industry one step closer to sustainability. | Siyu Pan Delong Hou Gaofu Yang Qiuping Xie Sunxian Yan Qi Zeng Zhonghui Wang Yi Chen Haojun Fan | 2019 | Journal of Leather Science and Engineering2019，1，1： | 3 |
| 6 | Genome-wide identification and expression analysis of DNA demethylase family in cotton显示文摘Background:DNA methylation is an important epigenetic factor that maintains and regulates gene expression.The mode and level of DNA methylation depend on the roles of DNA methyltransferase and demethylase,while DNA demethylase plays a key role in the process of DNA demethylation.The results showed that the plant’s DNA demethylase all contained conserved DNA glycosidase domain.This study identified the cotton DNA demethylase gene family and analyzed it using bioinformatics methods to lay the foundation for further study of cotton demethylase gene function.Results:This study used genomic information from diploid Gossypium raimondii JGI(D),Gossypium arboreum L.CRI(A),Gossypium hirsutum L.JGI(AD1) and Gossypium barbadebse L NAU(AD2) to Arabidopsis thaliana.Using DNA demethylase genes sequence of Arabidopsis as reference,25 DNA demethylase genes were identified in cotton by BLAST analysis.There are 4 genes in the genome D,5 genes in the genome A,10 genes in the genome AD1,and 6 genes in the genome AD2.The gene structure and evolution were analyzed by bioinformatics,and the expression patterns of DNA demethylase gene family in Gossypium hirsutum L were analyzed.From the phylogenetic tree analysis,the DNA demethylase gene family of cotton can be divided into four subfamilies:REPRESSOR of SILENCING 1(ROS1),DEMETER(DME),DEMETER-LIKE 2(DML2),and DEMETER-LIKE3(DML3).The sequence similarity of DNA demethylase genes in the same species was higher,and the genetic relationship was also relatively close.Analysis of the gene structure revealed that the DNA demethylase gene family members of the four subfamilies varied greatly.Among them,the number of introns of ROS1 and DME subfamily was larger,and the gene structure was more complex.For the analysis of the conserved domain,it was known that the DNA demethylase family gene member has an endonuclease Ⅲ(END03 c) domain.Conclusion:The genes of the DNA demethylase family are distributed differently in different cotton species,and the gene structure is very different.High expression of ROS1 genes in cotton were under abiotic stress.The expression levels of ROS1 genes were higher during the formation of cotton ovule.The transcription levels of ROS1 family genes were higher during cotton fiber development. | YANG Xiaomin LU Xuke CHEN Xiugui WANG Delong WANG Junjuan WANG Shuai GUO Lixue CHEN Chao WANG Xiaoge WANG Xinlei YE Wuwei | 2019 | Journal of Cotton Research2019，2，3： | 3 |
| 7 | Influence of the replacement of alkoxyl with alkylthienyl on photovoltaic properties of two small molecule donors for organic solar cells显示文摘Two benzo[1,2-b:4,5-b￠]dithiophene(BDT)-based small molecule(SM) donor materials with identical conjugated backbones but different substitution groups, named as DRTB-O and DRTB-T, were well explored to demonstrate the influence of the replacement of alkoxy with alkylthienyl on their photovoltaic properties in fullerene-based and fullerene-free organic solar cells(OSCs). The study shows that the two SM donors possess similar absorption spectra and energy levels but different crystalline structures in solid films. The carrier transport property and phase separation morphologies of the blend films have also been fully investigated.By employing PC71 BM as the acceptor, the power conversion efficiency(PCE) of DRTB-O:PC71BM and DRTB-T:PC71BM based devices were 4.91% and 7.08%, respectively. However, by blending with IDIC, the two SM donors exhibited distinctly different photovoltaic properties in fullerene-free OSCs, and the PCE of DRTB-O:IDIC and DRTB-T:IDIC based devices were 0.15% and9.06%, respectively. These results indicate that the replacement of alkoxyl with alkylthienyl in designing SM donor materials plays an important role in the application of fullerene-free OSCs. | Shaoqing Zhang Liyan Yang Delong Liu Chang He Jianqi Zhang Yun Zhang Jianhui Hou | 2017 | Science China Chemistry2017，60，10： | 2 |
| 8 | Berlin Green Framework‑Based Gas Sensor for Room‑Temperature and High‑Selectivity Detection of Ammonia显示文摘Ammonia detection possesses great potential in atmosphere environmental protection,agriculture,industry,and rapid medical diagnosis.However,it still remains a great challenge to balance the sensitivity,selectivity,working temperature,and response/recovery speed.In this work,Berlin green(BG)framework is demonstrated as a highly promising sensing material for ammonia detection by both density functional theory simulation and experimental gas sensing investigation.Vacancy in BG framework offers abundant active sites for ammonia absorption,and the absorbed ammonia transfers sufficient electron to BG,arousing remarkable enhancement of resistance.Pristine BG framework shows remarkable response to ammonia at 50–110°C with the highest response at 80°C,which is jointly influenced by ammonia’s absorption onto BG surface and insertion into BG lattice.The sensing performance of BG can hardly be achieved at room temperature due to its high resistance.Introduction of conductive Ti3CN MXene overcomes the high resistance of pure BG framework,and the simply prepared BG/Ti3CN mixture shows high selectivity to ammonia at room temperature with satisfying response/recovery speed. | Tingqiang Yang Lingfeng Gao Wenxuan Wang Jianlong Kang Guanghui Zhao Delong Li Wen Chen Han Zhang | 2021 | Nano-Micro Letters2021，13，4： | 2 |
| 9 | Strong coupling superconductivity and prominent superconducting fluctuations in the new superconductor Bi_4O_4S_3显示文摘Electric transport and scanning tunneling spectrum(STS)have been investigated on polycrystalline samples of the new superconductor Bi4O4S3.A weak insulating behavior in the resistive curve has been induced in the normal state when the superconductivity is suppressed by applying a magnetic field.Interestingly,a kink appears on the temperature dependence of resistivity near 4 K at all high magnetic fields above 1 T when the bulk superconductivity is completely suppressed.This kink associated with the upper critical field as well as the wide range of excess conductance at low fields and high temperatures is explained as the possible evidence of strong superconducting fluctuation.From the tunneling spectra,a superconducting gap of about 3 meV is frequently observed yielding a ratio of 2Δ/kB TC^16.6.This value is much larger than the one predicted by the BCS theory in the weak coupling regime(2Δ/kB TC^3.53),which suggests the strong coupling superconductivity in the present system.Furthermore,the gapped feature persists on the spectra until 14 K in the STS measurement,which suggests a prominent fluctuation region of superconductivity.Such a superconducting fluctuation can survive at very high magnetic fields,which are far beyond the critical fields for bulk superconductivity as inferred both from electric transport and tunneling measurements. | LI Sheng YANG Huan FANG DeLong WANG ZhenYu TAO Jian DING XiaXin WEN HaiHu | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，11： | 2 |
| 10 | Microstructural evolution of h-BN matrix composite ceramics with La-Al-Si-O glass phase during hot-pressed sintering显示文摘BN/La-Al-Si-O composite ceramics were fabricated by hot-pressed sintering using hexagonal boron nitride(h-BN),lanthanum oxide(La_(2)O_(3)),aluminia(Al_(2)O_(3)),and amorphous silica(SiO_(2))as the raw materials.The effects of sintering temperature on microstructural evolution,bulk density,apparent porosity,and mechanical properties of the h-BN composite ceramics were investigated.The results indicated that La-Al-Si-O liquid phase was formed during sintering process,which provided an environment for the growth of h-BN grains.With increasing sintering temperature,the cristobalite phase precipitation and h-BN grain growth occurred at the same time,which had a significant influence on the densification and mechanical properties of h-BN composite ceramics.The best mechanical properties of BN/La-Al-Si-O composite ceramics were obtained under the sintering temperature of 1700℃.The elastic modulus,flexural strength,and fracture toughness were 80.5 GPa,266.4 MPa,and 3.25 MPa·m^(1/2),respectively. | Baofu QIU Xiaoming DUAN Zhuo ZHANG Chen ZHAO Bo NIU Peigang HE Delong CAI Lei CHEN Zhihua YANG Yujin WANG Dechang JIA Yu ZHOU | 2021 | Journal of Advanced Ceramics2021，10，3： | 2 |
| 11 | Ground-high altitude joint detection of ozone and nitrogen oxides in urban areas of Beijing显示文摘Based on observational data of ozone(O3) and nitrogen oxide(NOx) mixing ratios on the ground and at high altitude in urban areas of Beijing during a period of six days in November 2011,the temporal and spatial characteristics of mixing ratios were analyzed.The major findings include:urban O3 mixing ratios are low and NOx mixing ratios are always high near the road in November.Vertical variations of the gases are significantly different in and above the planetary boundary layer.The mixing ratio of O3 is negatively correlated with that of NOx and they are positively correlated with air temperature,which is the main factor directly causing vertical variation of O3 and NOx mixing ratios at 600-2100m altitude.The NOx mixing ratios elevated during the heating period,while the O3 mixing ratios decreased:these phenomena are more significant at high altitudes compared to lower altitudes.During November,air masses in the urban areas of Beijing are brought by northwesterly winds,which transport O3 and NOx at low mixing ratios.Due to Beijing's natural geographical location,northwest air currents are beneficial to the dilution and dispersion of pollutants,which can result in lower O3 and NOx background values in the Beijing urban area. | Pengfei Chen Qiang Zhang Jiannong Quan Yang Gao Delong Zhao Junwang Meng | 2013 | Journal of Environmental Sciences2013，25，4： | 1 |
| 12 | A light-activatable antibiotic with high activation efficiency and uncompromised bactericidal potency in the activated state显示文摘Achieving activatable antibiotics represents one promising solution to tackle the occurrence of side effects,one major issue now plaguing antibiotic usage in collagen-based biomaterials.Despite considerable effort,however,rationale design of activatable antibiotics that display high activation efficiency and uncompromised bactericidal potency in the activated state remains difficult.Here,we demonstrate a design principle that helps to address this challenge.This strategy differs from previous attempts by underscoring photolytic removal of a functionality directly conjugated to the pharmacophore of an antibiotic,enabling not only an activation efficiency significantly improved beyond previous light-activatable antibiotics,but also bactericidal activity in the activated state as potent as the parent drug. | Delong Hou Rui Wang Zhonghui Wang Gaofu Yang Zhou Xu Qi Zeng Yi Chen | 2021 | Journal of Leather Science and Engineering2021，3，1： | 1 |
| 13 | Dry matter remobilization and compensatory effects in various internodes of spring wheat under water Stress显示文摘 | Ma Jian Huang Gaobao Yang Delong | 2014 | Crop Science2014，54，1： | 1 |
| 14 | Bidirectional differentiation of BMSCs induced by a biomimetic procallus based on a gelatin-reduced graphene oxide reinforced hydrogel for rapid bone regeneration显示文摘Developmental engineering strategy needs the biomimetic composites that can integrate the progenitor cells,biomaterial matrices and bioactive signals to mimic the natural bone healing process for faster healing and reconstruction of segmental bone defects.We prepared the gelatin-reduced graphene oxide(GOG)and constructed the composites that mimicked the procallus by combining the GOG with the photo-crosslinked gelatin hydrogel.The biological effects of the GOG-reinforced composites could induce the bi-differentiation of bone marrow stromal cells(BMSCs)for rapid bone repair.The proper ratio of GOG in the composites regulated the composites’mechanical properties to a suitable range for the adhesion and proliferation of BMSCs.Besides,the GOG-mediated bidirectional differentiation of BMSCs,including osteogenesis and angiogenesis,could be activated through Erk1/2 and AKT pathway.The methyl vanillate(MV)delivered by GOG also contributed to the bioactive signals of the biomimetic procallus through priming the osteogenesis of BMSCs.During the repair of the calvarial defect in vivo,the initial hypoxic condition due to GOG in the composites gradually transformed into a well-vasculature robust situation with the bi-differentiation of BMSCs,which mimicked the process of bone healing resulting in the rapid bone regeneration.As an inorganic constituent,GOG reinforced the organic photo-crosslinked gelatin hydrogel to form a double-phase biomimetic procallus,which provided the porous extracellular matrix microenvironment and bioactive signals for the bi-directional differentiation of BMSCs.These show a promised application of the bio-reduced graphene oxide in biomedicine with a developmental engineering strategy. | Delong Jiao Ao Zheng Yang Liu Xiangkai Zhang Xiao Wang Jiannan Wu Wenjun She Kaige Lv Lingyan Cao Xinquan Jiang | 2021 | Bioactive Materials2021，6，7： | 1 |
| 15 | Research on the improved proportional navigation guidance law using CA- DET 显示文摘 | Li Pengcheng Yang Suochang Feng Delong | 2014 | Applied Mechanics and Materials2014，488，： | 1 |
| 16 | Fe3O4-nanoparticle-decorated TiO2 nanofiber hierarchical heterostructures with improved lithium-ion battery performance over wide temperature range显示文摘灵巧的策略为 Fe 的制造被设计<潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 4 -nanoparticle-decorated TiO <潜水艇class=“ a-plus-plus ”> 2 nanofiber 由联合 electrospinning 技术的通用性的层次 heterostructures ( FTH )并且热水的生长方法。Fe 的层次建筑学 < 潜水艇 class= “ a-plus-plus ” > 3 O < 潜水艇 class= “ a-plus-plus ” >在 TiO 上装饰的 4 nanoparticles <潜水艇class=“ a-plus-plus ”> 2 nanofibers 启用进电池合成的二进制代码的成功的集成到地址结构的稳定性和低能力。在结果 FTH 的唯一的建筑学, 1D heterostructures 减轻 Fe 的严重的卷变化引起的紧张 < 潜水艇 class= “ a-plus-plus ” > 3 O < 潜水艇 class= “ a-plus-plus ” > 4 在众多的费用分泌物周期期间,并且这样压制电极材料的降级。作为结果, FTH 包括更高可逆的能力显示出优秀性能,优秀周期生活,并且在由于 TiO 的二进制作文的 synergistic 效果的一个宽温度范围上的好率性能<潜水艇class=“ a-plus-plus ”> 2 和 Fe <潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 4 和唯一的特征层次 nanofibers 。 | Hengguo Wang Guangsheng Wang Shuang Yuan Delong Ma Yang Li Yu Zhang | 2015 | Nano Research2015，8，5： | 1 |
| 17 | Avian leukosis virus subgroup A and B infection in wild birds of Northeast China显示文摘 | Delong Li Liting Qin Honglei Gao Bo Yang Wansi Liu Xiaole Qi Yongqiang Wang Xiangwei Zeng Sidang Liu Xiaomei Wang Yulong Gao | 2013 | Veterinary Microbiology (-)2013，，3： | 1 |
| 18 | Nitrogen Reduction to Ammonia by a Phosphorus-Nitrogen PN^(3) P-Mo(V)Nitride Complex:Significant Enhancement via Ligand Postmodification显示文摘Efforts to develop organometallic complexes for catalytic nitrogen reduction have seen significant progress in recent years.However,the strategies for improving the activity of the homogenous catalysts have mainly focused on alternating ligands and metals.Herein,we report that the activity and stability of a PN_(P-Mo pincer complex(2)toward dinitrogen(N_(2))reduction were greatly enhanced through postmodification of the PN^(3)P pincer framework of its parent complex(1).A high ratio of NH_(3)/Mo(3525)was achieved in the presence of SmI_(2)as a reductant.In sharp contrast,1 only afforded an NH_(3)/Mo ratio of 21.Moreover,when supported by an anionic pincer ligand,2 furnished a high oxidation state Mo(V)-nitride complex via N_(2)cleavage as a plausible key intermediate in the catalytic process,suggesting a catalytic cycle that may involve different oxidation states(Ⅱ/Ⅴ)from those with 10-πelectron configuration in the literature. | Delong Han Priyanka Chakraborty Mei-Hui Huang Li Yang Hao Huang Théo P.Gonçalves Abdul Hamid Emwas Zhiping Lai Jr-Hau He Aleksander Shkurenko Mohamed Eddaoudi Kuo-Wei Huang | 2023 | CCS Chemistry2023，5，3： | 0 |
| 19 | Effects of Additives on Structure and Properties of Synthesized Cordierite显示文摘Cordierite was synthesized using fly ash,sintered magnesia and silica fume as starting materials,ZrO2 and CaF2as additives,drying at(110 ± 5) ℃ for 24 h,and then firing at 1 290 ℃ for 3 h. Effects of type and addition of additives on structure and properties of synthesized cordierite were researched. The compressive strength, water absorption and apparent porosity,shrinkage rate,and bulk density of the specimens were measured,the phase composition was analyzed by XRD,and the specimens were observed by SEM. The results show that:(1) cordierite can be successfully synthesized using fly ash,sintered magnesia and silica fume;(2)CaF2facilitates the sintering,enhancing bulk density and shrinkage rate, but reducing the compressive strength; ZrO2 can promote cordierite synthesis,compacting the structure and increasing the compressive strength;(3) when the ZrO2 addition is 2 mass%,the main crystal phases are hexagonal α-cordierite and orthorhombic β-cordierite,the crystals grow well,and the amount of synthesized cordierite is the highest. | MA Lijian XU Delong YANG Pan | 2014 | China's Refractories2014，23，3： | 0 |
| 20 | Microstructural evolution and mechanical properties of in situ nano Ta_(4)HfC_(5) reinforced SiBCN composite ceramics显示文摘The in situ nano Ta_(4)HfC_(5) reinforced SiBCN-Ta_(4)HfC_(5) composite ceramics were prepared by a combination of two-step mechanical alloying and reactive hot-pressing sintering.The microstructural evolution and mechanical properties of the resulting SiBCN-Ta_(4)HfC_(5) were studied.After the first-step milling of 30 h,the raw materials of TaC and HfC underwent crushing,cold sintering,and short-range interdiffusion to finally obtain the high pure nano Ta_(4)HfC_(5).A hybrid structure of amorphous SiBCN and nano Ta_(4)HfC_(5) was obtained by adopting a second-step ball-milling.After reactive hot-pressing sintering,amorphous SiBCN has crystallized to 3C-SiC,6H-SiC,and turbostratic BN(C)phases and Ta_(4)HfC_(5) retained the form of the nanostructure.With the in situ generations of 2.5 wt% Ta_(4)HfC_(5),Ta_(4)HfC_(5) is preferentially distributed within the turbostratic BN(C);however,as Ta_(4)HfC_(5) content further raised to 10 wt%,it mainly distributed in the grain-boundary of BN(C) and SiC.The introduction of Ta_(4)HfC_(5) nanocrystals can effectively improve the flexural strength and fracture toughness of SiBCN ceramics,reaching to 344.1 MPa and 4.52 MPa·m^(1/2),respectively.This work has solved the problems of uneven distribution of ultra-high temperature phases in the ceramic matrix,which is beneficial to the real applications of SiBCN ceramics. | Bingzhu WANG Daxin LI Zhihua YANG Dechang JIA Jingyi GUAN Hao PENG Delong CAI Peigang HE Xiaoming DUAN Yu ZHOU Tao ZHANG Chenguang GAO | 2020 | Journal of Advanced Ceramics2020，9，6： | 0 |
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