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Nitridation Kinetics of Silicon Monocrystal and Morphology of Nitride Film孙贵如,李立本,李文超,王俭,冯艳丽,李净摘 要:<正> Basing on TGA (thermal gravimetric analysis) of thermal nitridation at l200, l250, l300℃, respectively,analysis of high temperature kinetics for nitridation of silicon monocrystal has been carried out. According tothe theory for kinetics......
痕量锗的分析进展李丹1,李彪1(1.湖北省武汉市湖北省地质实验研究所)摘 要:锗是一种贵重的稀散金属元素,广泛应用于当代高新科技行业.本文综述了近年来分析样品中痕量锗的试样前处理方法及仪器分析进展.介绍了电热板溶解,微波消解和密闭罐消解前处理样品对测定痕量锗的影响.总结了近年来痕量锗的仪器分析方法包括电感耦合等离子体发射光谱法,原子吸收光谱法,原子荧光光谱法,电感耦合等离子体质谱法,光度法,电化学法和离子色谱法等.指出了不同方法的特点及使用范围,并展望了痕量锗的前处理及其分析方法的发展方向.关键词......
Germanium Production in ChinaShen Huasheng;General Research Institute for Non-ferrous Metals, Beijing 100088摘 要:<正>1 .Introduetion Germanium differs... germanium.P一tyPe germanium erystal ean be obtained by doPing high Puritygermanium with 3 valenee element as indium,gallium or boron.Similarlyn一tyPe germanium erys-tal can be doPed with 5 valenee element......
; 文献标志码:A 文章编号:1672-7207(2013)02-0743-06 Hydraulic condensing rules for cement and paste mixed with different proportions of germanium waste WANG.... Yunnan Chihong Zn and Ge Company Ltd, Qujing 655011, China) Abstract: The hydraulic condensing rules after the cement and paste mixed with germanium waste were studied. Firstly different proportions......
J. Cent. South Univ. (2016) 23: 2214-2222 DOI: 10.1007/s11771-016-3279-6 Germanium separation and purification by leaching and precipitation Saeid Bayat, Sajjad Aghazadeh, Mohammad Noaparast, Mahdi...: In this research work, extraction and purification of germanium from zinc leach residues (ZLR) were investigated. The results of ICP, XRF, and atomic adsorption spectroscopy (AAS) tests show that contents......
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Oxidation Kinetics of (111) Silicon Monocrystal and Morphology of Oxide Film in Dry Oxygen Atmosphere李文超,樊自拴,孙贵如,秦福摘 要:<正> 1. Introduction Thermal oxidation of silicon monocrystalis a very important process in fabricationof metal--oxide--semiconductor (MOS) devices.In recent years it has received great atten-tion. Various proposals for oxidation......
Recovering germanium from coal ash by chlorination with ammonium chlorideZHU Guocai, SHI Wenzhong, and TIAN Jun Institute of Nuclear Energy Technology, Tsinghua University, Beijing 102201, China..."><正>A new process of enriching germanium from coal ash was developed. The process involves in mixing the coalash and ammonium chloride and then roasting the mixture to produce germanium chloride......
硬锌渣常压浸取锌铟锗梁艳辉1,2,魏昶1,蒋鹏飞2,李旻廷2,李存兄2,邓志敢2,王国栋-3(1.云南省昆明市昆明理工大学材料与冶金工程学院2.内蒙古自治区呼伦贝尔市呼伦贝尔驰宏矿业有限公司)摘 要:研究硬锌渣两段硫酸常压浸取锌,铟,锗的冶金技术.在Ⅰ段低酸条件下将锌浸出,在Ⅱ段高酸和添加剂共同作用下将铟,锗等有价金属浸出.锌的浸出率达到90%以上,铟的浸出率达到88%以上,锗的浸出率可以达到90.57%以上.关键词:冶金技术； 硬锌渣； 浸取锌铟鍺； 浸出率......
Leaching process of germanium oxide dustLIANG Jiea, b and WANG Huaa a Department of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China b Chemistry Department, Bijie University, Bijie 551700, China摘 要:A thermodynamic analysis on the acid leaching process of germanium oxide dust and discussion......
