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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:......
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......
Trans. Nonferrous Met. Soc. China 23(2013) 2502-2508 Microstructure and mechanical properties of in situ TiB2/7055 composites synthesized by direct magnetochemistry melt reaction Long-hua ZHONG, Yu... Abstract: In situ TiB2/7055 composites were successfully synthesized via magnetic chemical direct melt reaction from 7055 (Al-3B)-Ti system. The phase composition and the microstructure......
试论在含铟烟尘的生产中提高铟回收率的途径姚兴娜,单桃云,姚芾锡矿山闪星锑业有限责任公司摘 要:分析了部分铟生产厂家中铟的回收率不高的原因,找出了影响的主要因素,并就存在的问题,采取相应的改进措施,以达到综合提高铟回收率的目的.关键词:含铟烟尘;生产;铟回收率;......
1652 K, W2C is formed more easily than WC in the in-situ reaction between W and C. During the non-equilibrium solidification process, the growth mechanism of W2C transits from lateral growth to non.... As the current increasing from 600 A to 1000 A, the W2C content increases, and the hardness of materials decreases to 78HRA from 84HRA. Key words: non-equilibrium solidification; W2C; in situ reaction; growth......
Reaction mechanism of preparation of titanium by electro-deoxidation in molten salt WANG Bin, LIU Kui-ren, CHEN Jian-she School of Materials and Metallurgy, Northeastern University... was the primary cathodic reaction; meanwhile, some calciothermic reduction reactions also happened at the cathode. Cyclic voltammograms of solid titanium dioxide and molybdenum wire in molten salts with different......
