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| 1 | BASIC EQUATIONS FOR THERMO-ELECTROCHEMISTRYAND THE ENTROPY CHANGE OF THE STANDARDHYDROGEN ELECTRODE REACTION显示文摘BASICEQUATIONSFORTHERMO-ELECTROCHEMISTRYANDTHEENTROPYCHANGEOFTHESTANDARDHYDROGENELECTRODEREACTIONFANGZheng,ZHANGHengzhong,ZHA... | FANG Zheng, ZHANG Hengzhong, ZHANG Pingming, HUANG Shengtang,GUO Li and HU Guoqiang(Department of Chemistry, Central South University of Technology, Changsha 410O83, China) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，3： | 2 |
| 2 | DETERMINATION OF THE ENTROPY CHANGE FOR ELECTRODE REACTION AND DILUTE ENTHALPY OF SOME IONS BY THERMO-ELETROCHEMICAL TECHNOLOGY显示文摘DETERMINATIONOFTHEENTROPYCHANGEFORELECTRODEREACTIONANDDILUTEENTHALPYOFSOMEIONSBYTHERMO-ELETROCHEMICALTECHNOLOGY*FangZhengGuoL... | Fang Zheng Guo Lin Zhang Hengzhong Zhang Pingming(Department of Chemisty, Central South University of Technology, Changsha 410083, China) | 1998 | Journal of Central South University1998，10，1： | 2 |
| 3 | New kinetic model for the nanocrystalline anatase-to-rutile transformation revealing rate dependence on number of particles显示文摘 | ZHANG Hengzhong BANNFIELD J F | 1999 | American Mineralogist1999，84，： | 1 |
| 4 | PREPARATION AND PROPERTIES OF THE MICRO-POWDER PHASE AND A NEW PHASE OF AMMONIUM TETRAMOLYBDATES显示文摘PREPARATIONANDPROPERTIESOFTHEMICROPOWDERPHASEANDANEWPHASEOFAMMONIUMTETRAMOLYBDATES①YinZhoulan,ChenQiyuan,ZhangHengzhong,Zhou... | Yin, Zhoulan Chen, Qiyuan Zhang, Hengzhong Zhou, Guizhi Li, Yuangao Zhang, Pingmin | 1997 | 中国有色金属学会会刊:英文版1997，7，1： | 1 |
| 5 | Thermodynamic analysis of phase stability of nanocrystalline titania显示文摘 | ZHANG Hengzhong BANNFIELD J F | 1998 | Journal of Materials Chemistry1998，8，： | 1 |
| 6 | Phase transformation of nanocrystalline anatase-to-rutile via combined interface and surface nucleation显示文摘 | ZHANG Hengzhong BANNFIELD J F | 2000 | Journal of Materials Research2000，15，： | 1 |
| 7 | A model for exploring particle size and temperature dependence of excess heat capacities of nanocrystalline substances显示文摘 | ZHANG Hengzhong BANNFIELD J F | 1998 | NanoStructured Materials1998，10，： | 1 |
| 8 | Design and fabrication of laminated–graded zirconia self-lubricating composites显示文摘 | Yuan Fang Yongsheng Zhang Junjie Song Hengzhong Fan Litian Hu | 2013 | Materials and Design2013，，： | 1 |
| 9 | Phase Stability and Transformation in Titania Nanoparticles in Aqueous Solutions Dominated by Surface Energy 显示文摘 | Michael P finnegan Zhang Hengzhong | 2007 | The Journal of Physical Chemistry C2007，111，： | 1 |
| 10 | Understanding polymorphic phase transformation behavior during growth of nanocrystalline aggregates: insights from TiO2显示文摘 | Jillian F Banfield | 2000 | J Phys Chem B2000，104，15： | 1 |
| 11 | New Discovery of ~1866 Ma High-temperature Mylonite in the Helanshan Complex: Marking a Late-stage Ductile Shearing in the Khondalite Belt, North China Craton显示文摘Objective The Khondalite Belt is a nearly E–W-trending Paleoproterozoic Himalayan-type orogen in the Western Block of the North China Craton. It is regarded as a result of the collision between the northern Yinshan Block and the southern Ordos Block at ~1.95 Ga, which led to the formation of the united basement of the Western Block(e.g., Zhao et al., 2005;Yin et al., 2011). The Khondalite Belt has undergone long-term continent-continen collisional orogenic processes, and a remarkable series of late-stage orogen-parallel ductile shear zones developed(e.g., Huang et al., 2013;Gong et al., 2014). | QIAO Hengzhong YIN Changqing ZHANG Jian QIAN Jiahui WU Shangjing | 2021 | Acta Geologica Sinica(English Edition)2021，95，4： | 0 |
| 12 | Bioinspired PcBN/hBN fibrous monolithic ceramic:High-temperature crack resistance responses and self-lubricating performances显示文摘The high strength and toughness of natural materials are mainly determined by a combination of mechanisms operating at different length scales,which can be used as a strategy to reduce the intrinsic brittleness of ceramics.Inspired by the architectures of bamboo,the polycrystalline cubic boron nitride/hexagonal boron nitride(PcBN/hBN)fibrous monolithic ceramics with a long fiber arrangement structure was constructed with PcBN fiber cells and hBN cell boundaries,and its crack resistance responses and tribological performances were investigated.The composite ceramic failed in a non-brittle manner with the rising resistance curve(R-curve)behavior,which was attributed to multiscale crack effects in the hierarchical architecture.The maximum crack growth toughness was extremely high(approximately 21 MPa×m^(1/2)),corresponding to a 270%increase over the crack initiation toughness.Excellent fracture resistance could be retained even above 1000℃.Moreover,the composite ceramic exhibited low and stable friction coefficients(approximately 0.33)when paired with a Si_(3)N_(4)pin at high temperature(1000℃),owing to the lubrication function of hBN cell boundaries with weak van der Waals forces and a small amount of liquid B_(2)O_(3)produced.As a result,a synergistic improvement of mechanical and tribological properties at high temperature(1000℃)was realized by combining bionic structure and tribological design.It provides important theoretical and technical support for expanding the application of self-lubricating composite ceramics in harsh environments. | Shu-na CHEN Hengzhong FAN Yunfeng SU Jicheng LI Junjie SONG Litian HU Yongsheng ZHANG | 2022 | Journal of Advanced Ceramics2022，11，9： | 0 |
| 13 | THERMODYNAMIC ANALYSES FOR S-H_2O SYSTEM AT 25℃显示文摘THERMODYNAMICANALYSESFORSH2OSYSTEMAT25℃①YiQingfeng,ChenQiyuan,ZhangHengzhong,ZhangPingminDept.ofChemistry,CentralSouthUniver... | Yi Qingfeng, Chen Qiyuan, Zhang Hengzhong, Zhang Pingmin Dept. of Chemistry, Central South University of Technology, Changsha 410083 | 1997 | 中国有色金属学会会刊:英文版1997，7，1： | 0 |
| 14 | HIGH-TEMPERATURE HEAT CAPACITIES OF THE PHASES IN Y-Ba-Cu-O SYSTEM显示文摘HIGH-TEMPERATUREHEATCAPACITIESOFTHEPHASESINY-Ba-Cu-OSYSTEMZhangHengzhong;FangZheng;ZhangPingmin;ChenXinmin(DepartmentofChemis... | Zhang Hengzhong Fang Zheng Zhang Pingmin Chen Xinmin(Department of Chemistry,Central South University of Technology,Changsha 410083) | 1995 | 中国有色金属学会会刊:英文版1995，5，4： | 0 |
| 15 | Synthesis and mechanical and elevated temperature tribological properties of a novel high-entropy(TiVNbMoW)C_(4.375) with carbon stoichiometry deviation显示文摘High-entropy carbides are a nascent group of ceramics that are promising for high-temperature applications due to the combination of good stability,high hardness(H),high strength,and superior creep resistance that they display.Due to high melting points and low lattice diffusion coefficients,however,the high-entropy carbides are usually difficult to consolidate to a nearly full density.To cope with this challenge,herein,binary carbides including TiC,V_(8)C_(7),NbC,Mo_(2)C,and WC with different carbon stoichiometry were used to prepare dense high-entropy(TiVNbMoW)C_(4.375),and the influence of carbon vacancy on formation ability and mechanical properties of carbon-deficient high-entropy(TiVNbMoW)C_(4.375) were investigated.Intriguingly,although the starting binary carbides have different crystal structures and carbon stoichiometry,the as-prepared high-entropy material showed a rock-salt structure with a relatively high density(98.1%)and good mechanical properties with hardness of 19.4±0.4 GPa and fracture toughness(KIC)of 4.02 MPa·m^(1/2).More importantly,the high-entropy(TiVNbMoW)C_(4.375) exhibited low coefficient of friction(COF)at room temperature(RT)and 800℃.Wear rate(W)gradually increased with the temperature rising,which were attributed to the formation of low-hardness oxidation films at high temperatures to aggravate wear.At 800℃,lubricating films formed from sufficient oxidation products of V_(2)O_(5) and MoO_(3) effectively improved tribological behavior of the high-entropy(TiVNbMoW)C_(4.375).Wear mechanisms were mainly abrasive wear resulting from grain pullout and brittle fracture as well as oxidation wear generated from high-temperature reactions.These results are useful as valuable guidance and reference to the synthesis of high-entropy ceramics(HECs)for sliding parts under high-temperature serving conditions. | Jicheng LI Yanchun ZHOU Yunfeng SU Shuna CHEN Qiuan SUN Hengzhong FAN Junjie SONG Litian HU Yongsheng ZHANG | 2023 | Journal of Advanced Ceramics2023，12，2： | 0 |
| 16 | CALCULATION OF SUBSOLIDUS PHASE RELATION DIAGRAMS OF Y-Ba-Cu-O SYSTEM显示文摘Mathematical principle and Qiethod for the calculation of subsolidus phase relation diagrams of the quasi-temary system YO_(13)-BaO-CuO were developed,and the corresponding mathematical model was es-Ublished.Subsolidus phase relation diagrams of this system at different temperatures were calculated from thermodynamic dala.The calculated results showed that in Y-Ba-Cu-O system BaCuO_(2) and Y_(3)BaCuO_(5) are thermodynamically stable at room-temperature,and Y_(2)Cu_(2)O_(5) and YBa_(2)Cu_(3)O_(65 )also become stable at tem peratures higher than 300℃ and 750℃ respectively.The calculated results are in good agreement with those from experiments. | Zhang Hengzhong Zhang Pingmin Chen Xinmin | 1991 | Transactions of Nonferrous Metals Society of China1991，1，1： | 0 |
| 17 | Influence of binder systems on sintering characteristics, microstructures, and mechanical properties of PcBN composites fabricated by SPS显示文摘Cubic boron nitride(cBN)with high hardness,thermal conductivity,wear resistance,and chemical inertness has become the most promising abrasive and machining material.Due to the difficulty of fabricating pure cBN body,generally,some binders are incorporated among cBN particles to prepare polycrystalline cubic boron nitride(PcBN).Hence,the binders play a critical factor to the performances of PcBN composites.In this study,the PcBN composites with three binder systems containing ceramic and metal phases were fabricated by spark plasma sintering(SPS)from 1400 to 1700℃.The sintering behaviors and mechanical properties of the composites were investigated.Results show that the effect of binder formulas on mechanical properties mainly related to the compactness,mechanical performances,and thermal expansion coefficient of binder phases,which affect the carrying capacity of the composites and the bonding strength between binder phases and cBN particles.The PcBN composite with SiAlON phase as binder presented optimal flexural strength(465±29 MPa)and fracture toughness(5.62±0.37 MPa·m^(1/2)),attributing to the synergistic effect similar to transgranular and intergranular fractures.Meanwhile,the excellent mechanical properties can be maintained a comparable level when the temperature even rises to 800℃.Due to the weak bonding strength and high porosity,the PcBN composites with Al_(2)O_(3)–ZrO_(2)(3Y)and Al–Ti binder systems exhibited inferior mechanical properties.The possible mechanisms to explain these results were also analyzed. | Shuna CHEN Hengzhong FAN Yunfeng SU Wensheng LI Jicheng LI Bing YAN Junjie SONG Litian HU Yongsheng ZHANG | 2022 | Journal of Advanced Ceramics2022，11，2： | 0 |
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