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Metal Dusting-Mechanisms and Preventions () 摘要:Metal dusting attacks iron, low and high alloy steels and nickel-or cobalt-base alloys by disintegrating bulk metals and alloys into metal particles... mechanism is still not well understood. Current methods of protection against metal dusting are either directed to the process conditions-temperature and gas composition-or to the development of a dense......
of bioleaching metal oxide, dissimilatory metal reducing microorganism (DMRM) was isolated from deep sea floor sediment of the pacific ocean. The DMRM was adopted to the bioleaching process of the metals... with the bacteria of Geobacter metallireducens, and the mechanism of microbial dissimilatory metal reduction was studied. The results show that metal oxide is the final electron acceptor of microbial......
Three-dimensional simulation of sintering crunodes of metal powders or fibers by level set methodCHEN Dong-dong(谌东东)1, ZHENG Zhou-shun(郑洲顺)1, WANG Jian-zhong(王建忠)2, TANG Hui-ping(汤慧萍)2, QU Xuan-hui(曲选辉)3(1. School of Mathematics and Statistics, Central South University, Changsha 410083, China;2. State Key Laboratory of Porous Metal Materials (Northwest Institute for Nonferrous Metal Research),Xi......
Sphericizing metal powders by mechanical means WANG Fu-xiang(王富祥), GAI Guo-sheng(盖国胜), YANG Yu-fen(杨玉芬) Key Laboratory for Advanced Materials of Ministry of Education, Department of Materials... shaped metal powders were impacted and sphericized by using high speed airflow impact method particles composite system(PCS). The optimum technological parameters for the metal powders processed were......
Improvement of Drill Performance in Metal Cutting Using MoST Solid Lubricant Coatings S. Hickman1,N.R. Thomas1,D.G. Teer1,S. Yang1 (1.Teer Coatings Ltd., West Stone House, West Stone, Berry Hill Industrial Estate, Droitwich, WR9 9AS, UK) 摘要:Coated tools are widely used in today''s metal cutting industries and have significantly improved machining productivity through reducing operation costs......
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EXPERIMENTAL TESTING OF DRAW-BEAD RESTRAINING FORCE IN SHEET METAL FORMING J.H.Yang1,X.Y.Ruan1,D.N.He1,J.Chen1 (1.Department of Plasticity Forming Engineering, Shanghai Jiao Tong University, Shanghai 200030, China) Abstract:Due to complexities of draw-bead restraining force calculated according to theory anddepending on sheet metal forming properties experiment testing system......
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