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| 1 | Grain Growth Behavior of 5Cr21Mn9Ni4N Steel Micro-Alloyed by Rare Earth显示文摘Grain growth behavior of 5Cr21Mn9Ni4NRE steel was experimentally studied at various solid solution treatment temperatures and holding for different times. The experimental results show that the 5Cr21Mn9Ni4NRE steel has the feature of sharp austenite grain coarsening after solid solution treatment at the temperature above 1150 ℃. RE added in the steel has the benefit to restrain grain growth and increase grain growth activation energy. Grain growth mechanism is self-diffusion controlling process. The dispersed carbo-nitride in the steel greatly restrains grain growth. Solid solution treatment at the temperature below 1100 ℃ leads to little increase of grain size and little decrease of Rockwell hardness for mass carbo-nitride undissolved, whereas solid solution treatment at the temperature above 1150 ℃ leads to rapid grain coarsening and Rockwell hardness decrease. Grain growth exponent increases with the increasing solid solution treatment temperature. | Yu Shichang Wu Shenqing Gong Youjun Gong Yuansheng Lian Mingsheng Ye Gang Cheng Yijun | 2006 | Journal of Rare Earths2006，24，1： | 3 |
| 2 | Compact hypersurfaces in a unit sphere显示文摘 | Cheng Q M Shu Shichang Suh Y J | 2005 | Proceedings of the Royal Society of Edinburgh-A-Bathematics2005，135，6： | 1 |
| 3 | Investigation on aging percipitates and strengthening mechanism of T122 boiler steel显示文摘 | Hansheng Bao Shichang Cheng Zhengdong Liu | 2010 | J Iron Steel Res2010，17，2： | 1 |
| 4 | Emission of N2O from a full-scale sequencing batch reactor wastewater treatment plant: Characteristics and influencing factors 显示文摘 | Shichang Sun Xiang Cheng Dezhi Sun | 2013 | International Biodeterioration & Biodegradation2013，85，： | 1 |
| 5 | A facile preparation of hausmannite as a high-performance catalyst for toluene combustion显示文摘Mesoporous transition metal oxide catalysts are well-used in the elimination of volatile organic compounds.In this study,we developed an efficient method for the preparation of mesoporous-Mn_(3)O_(4)(mMn_(3)O_(4))without the use of templates or surfactants.In this method,KCl protects oxygen defects on the surface of fresh Mn_(3)O_(4) crystallites.m-Mn_(3)O_(4) shows higher ameliorative catalytic activity than bulk-Mn_(3)O_(4)(b-Mn_(3)O_(4)) and calcined-Mn_(3)O_(4)(c-Mn_(3)O_(4)),achieving toluene catalytic oxidation of T_(10) and T_(90)(the temperature at a conversion rate of about 10%and 90%)at 191℃and 230℃,respectively(WHSV=40,000 ml·g^(-1)·h^(-1)).Based on various characterizations,the prepared m-Mn_(3)O_(4)has large specific surface area and abundant oxygen defects,and thus can provide more surface active sites,which give it superior toluene combustion activity. | Qi Liu Gao Cheng Ming Sun Weixiong Yu Xiaohong Zeng Shichang Tang Yongfeng li Lin Yu | 2022 | Chinese Journal of Chemical Engineering2022，35，4： | 1 |
| 6 | High-Temperature Oxidation Behavior of 5Cr21Mn9Ni4N Steel Micro-Alloyed by Rare Earth显示文摘The oxidation resistance of 5Cr21Mn9Ni4N steel micro-alloying by RE at 700~900 ℃ was investigated. The results indicate that oxidation exponent n and oxidation activation energy are increased, and oxidation velocity constant k_p is decreased when 0.2% RE is added in 5Cr21Mn9Ni4N steel. The addition of RE elements does not alter phase constitution of oxidation scale, however it improves the configuration of oxidation scale, and increases thermal stability and adhesivity of oxidation scale, which results in the raise of oxidation resistance of 5Cr21Mn9Ni4N steel at high temperature. The oxidation scale constitutes of refractory steel transfer from manganic oxide mostly to ferric oxide mostly with the increase of temperature, which leads to descend of compactness and desquamation resistance of oxidation scale. The mass increase of ferric oxide in the oxidation scale and the looseness of oxidation scale are the main reason to descend the oxidation resistance of refractory steel. | Yu Shichang Wu Shenqing Gong Youjun Gong Yuansheng Lian Mingsheng Ye Gang Cheng Yijun | 2006 | Journal of Rare Earths2006，24，3： | 1 |
| 7 | Emission of N20 from a full-scale sequencing batch reactor wastewater treatment plant: Cha- racteristics and influencing factors 显示文摘 | Sun Shichang Cheng Xiang Sun Dezhi | 2013 | International Biodeteriora- tion & Biodegradation2013，85，： | 1 |
| 8 | Research Progress of Metal-Based Shielding Materials for Neutron and Gamma Rays显示文摘The radiation generated by nuclear reaction is harmful to human body and equipment,thus the radiation shielding materials that employ the shielding ability from neutron and gamma rays are the best candidates according to application situations and radiation sources.In this paper,the researches of metal-based neutron and gamma rays or multiple purpose shielding materials are systematically summarized,and the respective and principal problems of these materials with respect to shielding effectiveness and other performances,such as corrosion,mechanical properties,manufacture,etc.,are discussed.Finally,the prospect of shielding materials is outlined,which suggests that the development of highly efficient and multiply functional radiation shielding materials with good environmental compatibility is one of the future development trends. | Bin Gan Shichang Liu Zhen He Fucai Chen Haoxuan Niu Jingchang Cheng Bo Tan Bo Yu | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，12： | 1 |
| 9 | Nitrogen doped porous carbon-based bifunctional oxygen electrocatalyst with controllable phosphorus content for zinc-air battery显示文摘The controllable construction of non-noble metal based bifunctional catalysts with high activities towards oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is of great significance,but remains a challenge.Herein,we reported an effective method to synthesize cobalt-nitrogen doped mesoporous carbon-based bifunctional oxygen electrocatalyst with controllable phosphorus content(Co-N-P_(X)-MC,X=0.5,1.0,1.5,2.0).The mesoporous carbon substrate endowed the asprepared samples with more exposed active surface(236.50 m^(2)·g^(−1))and the most appropriate doping ratio of phosphorus had been investigated to be 1.5(Co-N-P1.5-MC).For ORR,Co-N-P1.5-MC exhibited excellent catalytic activity with more positive onset potential(1.01 V)and half-wave potential(0.84 V)than the other samples.For OER,Co-N-P1.5-MC also showed a low overpotential of 415 mV.Combining experimental results and density-functional theory(DFT)calculations,the outstanding bifunctional catalytic performance of Co-N-P1.5-MC was due to the synergistic cooperation between the P and N dopants,which could reduce the reaction barriers and was favorable for ORR and OER.Moreover,the Zn-air battery using Co-N-P1.5-MC as the cathode showed remarkable battery performance with high stability(could operate stably for over 160 h at 10 mA·cm^(−2))and maximum power density(119 mW·cm^(−2)),demonstrating its potential for practical applications.This work could provide significant enlightenment towards the design and construction of bifunctional oxygen electrocatalyst for next-generation electrochemical devices. | Shichang Cai Zihan Meng Gaojie Li Yu An Yapeng Cheng Erjun Kan Bo Ouyang Haining Zhang Haolin Tang | 2023 | Nano Research2023，16，4： | 0 |
| 10 | Development of Valve Steel for Internal Combustion Engine in China显示文摘Internalcombustionengineincludinggasolineengineanddieselengineisthemotiveforceofauto-mobile,andisalsousedformotorcycles,tract... | Cheng Shichang Lin Zhaojie | 1998 | Journal of Iron and Steel Research(International)1998，5，2： | 0 |
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