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2N铟蒸馏提纯4.5N铟的试验研究朱恩文,陈应红广东先导稀材股份有限公司摘 要:研究用2N铟锭作为原料采用真空蒸馏脱除镉,锌,铅,铊低沸点杂质,再通过真空反蒸馏铟分离铜,铁,镍,锡高沸点杂质,进一步的提纯为4.5N铟锭,试验表明:在一定的真空度前提下通过控制温度进行蒸馏和反蒸馏,提纯后的铟锭符合4.5N铟锭.关键词:2N铟;蒸馏;反蒸馏;4.5N铟;......
GB/T 4949<铝-锌-铟系合金牺牲阳极化学分析方法>标准修订评析刘攀,杜米芳,张斌彬,李景滨中国船舶重工集团公司第七二五研究所摘 要:介绍了新标准GB/T 4949-2018<铝-锌-铟系合金牺牲阳极化学分析方法>的修订背景,修订原则,内容结构变化,主要技术变化.同时,对比分析了新旧标准及国内外标准的差异,结合仪器分析测试方法和牺牲阳极材料技术的发展,提出了本标准的未来发展建议.关键词:GB/T 4949;铝-锌-铟系合金;牺牲阳极;化学分析方法;标准修订;电感耦合等离子体-发射光谱法;......
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Leaching without reducing agent Direct leaching of the NLR was performed at 160 g/L H2SO4, 90 °C and 5 h. As shown in Fig. 2, the extractions of zinc, iron and indium increased along with reaction time... for this purpose since no foreign ions will be introduced to the reaction system. Leaching experiments were carried out in the same conditions as the previous test (160 g/L H2SO4, 90 °C and 5 h......
at author's lab), respectively. The Ti3SiC2 powder used in this work was fabricated by using the in-situ hot pressing solid-liquid reaction process, which was described in Ref.[9]. The as-prepared powders... reaction and stability of Ti3SiC2 in Cu during high-temperature processing of Cu/ Ti3SiC2 composite [J]. Z Metallkd, 2004, 95(1): 50-56. [9] SUN Z M, ZHOU Y C. In situ hot pressing/solidliquid......
of needle-shaped TiB whiskers, indicating that in situ reaction occurred during vacuum sintering of the powder compacts. All the composite samples had a high sintered density, and the hardness... to be dependent on the mass fraction of the reinforcement. However, the mechanism for the in situ reaction needs further investigation by high-energy in situ X-ray diffraction techniques.关键词:......
中国大幅度减产 铟市场复苏有日--2002年上半年铟市场分析冯君从摘 要:<正> 全球铟价在100美元/千克以下的时间已经达一年之久,目前仍无回升迹象,原因不仅仅是供应过剩,需求疲软还是主要因素.中国上半年减产幅度达三分之一,未来三年都不可能回升到去年的产量水平,一旦经济形势特别是日本,美国电子工业复苏,铟价将结束长时间关键词:......
Trans. Nonferrous Met. Soc. China 22(2012) 571-576 Preparation and microstructure of in-situ (ZrB2+Al2O3+Al3Zr)p/A356 composite synthesized by melt direct reaction YANG Hua-jing, ZHAO Yu-tao, CHEN... μm. In addition, the interfaces of the matrix and particles are net and no interfacial outgrowth is observed. Key words: aluminum matrix composites; melt direct reaction; in situ particle......
Preparation of nanoanatase and its in situ XRD study LI Guo-hua(李国华)1, 2, 3, ZHENG Yi-fan(郑遗凡)1, 2, MA Chun-an(马淳安)1, 2, 3, TIAN Wei(田 伟)1, 3 1. School of Chemical Engineering and Material... solution. In order to investigate the microstrain effect on nanoanatase transformation, the transformation process of the sample was investigated by in situ XRD. Based on the in situ XRD data, a variation......
度因子为22.12~38.24 kJ/(g·s)时,合成WC-MgO的反应模式为扩散反应,所需的最小球磨总能量为112.83×109 J/g. 关键词:WC-MgO;纳米复合粉末;高能球磨;反应模式 中图分类号:TF 123.7 文献标识码:A Reaction mode and criterion of nanocomposite WC... of the mixture powders WO3, graphite and Mg at the mole ratio of 1?1?3. The energy region of diffusion and self-propagation reaction (SHS) was defined using a refined model based on Magini model and YANG Jun......