共搜索到16428条信息，每页显示10条信息，共1643页。用时：0小时0分0秒334毫秒
Trans. Nonferrous Met. Soc. China 27(2017) 839-847 Sliding wear characteristics of solid lubricant coating on titanium alloy surface modified by laser texturing and ternary hard coatings M. PREM... and surface coating were used to enhance the surface properties of the titanium alloy substrate. Hard and wear resistant coatings such as TiAlN and AlCrN were applied over textured titanium alloy......
Effective removal of heavy metals from aqueous solutions by orange peel xanthate LIANG Sha(梁 莎)1, GUO Xue-yi(郭学益)1, FENG Ning-chuan(冯宁川)2, TIAN Qing-hua(田庆华)1 1. School... heavy metals (Cu2+, Cd2+, Pb2+, Zn2+ and Ni2+) were studied. FTIR spectra, Zeta potentials and TG analysis were used to characterize prepared orange peel xanthate. Effects of various parameters......
Influence of intermediate principal stress on failure mechanism of hard rock with a pre-existing circular openingZHANG She-rong(张社荣)1, SUN Bo(孙博)1, 2, WANG Chao(王超)1, YAN Lei(严磊)3, 4(1. State Key... of the magnitude and direction of the intermediate principal stress on failure mechanism of hard rock with a pre-existing circular opening were studied by carrying out true triaxial tests on siltstone......
Influence of sulfur addition/solids content ratio on removal of heavy metals from mine tailings by bioleachingHe Zhong-bing (贺仲兵)1,2, Liao Ting (廖婷)1,2, Liu Yun-guo (刘云国)1,2, Xiao Yu (肖玉)1,2, Li... (Ministry of Education), Hunan University, Changsha 410082, China)Abstract:The effect of sulfur addition/solids content (SA/SC) ratio on heavy metals (e.g. copper, zinc and lead) obtained from mine......
均高于进口试样的,但由于形成了较多大块状,硬而脆的Fe2Si2Al9相,导致国产型材的强度虽稍高于进口型材的,但其伸长率却大幅度下降,也影响型材的表面质量. 关键词:6061散热铝型材；硬质相；表面质量 中图分类号:TB31 文献标志码:A Effect of hard phases on surface quality of 6061... that of the imported one. However, due to the formation of massive, hard and brittle Fe2Si2Al9 phases, its elongation is much lower than that of the imported one, and its surface quality is also affected......
Trans. Nonferrous Met. Soc. China 27(2017) 1180-1187 Recovery of valuable metals from zinc leaching residue by sulfate roasting and water leaching Guo-min JIANG1,3, Bing PENG1,2, Yan-jie LIANG1,2, Li... and water leaching was employed to recover the valuable metals from ZLR. The ZLR was initially roasted with ferric sulfate at 640 °C for 1 h with ferric sulfate/zinc ferrite mole ratio of 1.2.......
Trans. Nonferrous Met. Soc. China 22(2012) s639-s644 Microstructures of brazing zone between titanium alloy and stainless steel using various filler metals Taeshin CHUNG1, Jungsoo KIM2, Jeongseok..., various filler metals were used. Microstructures were observed at each condition. Filler metals were titanium based 40Ti-20Zr-20Cu-20Ni, silver based Ag-5Pd, and nickel based......
J. Cent. South Univ. (2017) 24: 891-899 DOI: 10.1007/s11771-017-3491-z Optimization of passive control performance for different hard disk drives subjected to shock excitation Seyed Rashid Alavi1, 2... of the most sensitive components of LPCs is hard disk drive (HDD) which needs to be protected against damages attributable to shock and vibration in order to have better magnetic read/write performance......
Composition Gradient Hard Coatings by Arc Ion Plating LIN Guo-qiang1,CHEN Jun2,WANG Fu-gang2 (1.State Key Laboratory for Materials Modification, Dalian , China;2.Department of material engineering of Dalian University of Technology, Dalian , China) 摘要:Arc Ion Plating can be used to synthesize multi-component composition gradient hard coatings by adjusting arc currents of metal targets......
as the range of the parameters in vertical hard pipe of the system were presented. The 14 kinds of schemes were listed, and divided into four groups based on the above parameters. Based on the Eulerian model... diameter has the minimum influence on transportation system, which can provide theory basis for selection of operating condition. Key words: gas hydrate; vertical hard pipe; hydraulic lifting......
