共搜索到2155条信息,每页显示10条信息,共216页。用时:0小时0分0秒173毫秒
......
Research Progress in Solderable Black Pad of Electroless Nickel/Immersion Gold Bi Sifu1,Liu Haiping1,Li Deyu1,Li Ning1 (1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China) Abstract:Electroless nickel/immersion gold (ENIG) technology is widely used as one of the surface final finish for electronics packaging substrate and printed circuit board (PCB......
Gold Distribution in Tellurium-Rich Pyrite and Tellurides from the Xiaoqinling Gold District, Southern Margin of the North China Craton () 摘要: Gold is commonly associated with arsenic in Asrich pyrite or arsenopyrite in a variety types of gold deposit, such as sediment-hosted gold deposits, epithermal Au-Ag deposits, Au-rich VMS deposits, and mesothermal lode gold deposits (Ciobanu......
......
......
......
......
60Co Gamma Irradiation and Annealing Effects on Transport Properties of Antimony Telluride Platelets Grown by Physical Vapor DepositionThankamma George,A.G.KunjomanaCrystal Research Centre, Department of Physics, Christ University摘 要:Physical vapor deposition method was employed to deposit antimony telluride(Sb2Te3) crystals in a dual-zone furnace......
J. Cent. South Univ. Technol. (2007)04-0485-05 DOI: 10.1007/s11771-007-0094-0 Mechanism of gold dissolving in alkaline thiourea solution CHAI Li-yuan(柴立元), WANG Yun-yan(王云燕) (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) _____________________________________________________________ Abstract:Reaction mechanism of gold dissolving......
Effect of mixed moderately thermophilic adaptation on leachability and mechanism of high arsenic gold concentrate in an airlift bioreactorYU Run-lan(余润兰), WU Fa-deng(吴发登), CHEN An(陈安), SHI Li-juan(石丽... gold concentrate with 19% arsenic was treated by a mixed moderately thermophiles in an airlift bioreactor through an adaptation protocol. The moderately thermophiles could respond well to 20% (w/v......