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Preparation of Ni/C core-shell composite powders by electroless plating method ZHANG Hai-jun (张海军)1, LIU Yun (刘 云)1, JIA Quan-li(贾全利) 1, JIA Xiao-lin(贾晓林)2 1. Institute of High Temperature... of the solution, amounts of complexing reagent and surfactant, bath load of activated carbon and reaction time, and so on, on the preparation of Ni/C core-shell composite powders were studied. The results......
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words: catalyst; nanomaterial; powder technology; sol-gel preparation  ... approaches have been explored for the preparation of spherical nanosized particles, including the use of colloids, polymers, glasses, and micelles to successfully control aggregation[2-4]. Many new......
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X射线荧光光谱分析法熔融制样技术的探讨与应用王一凌1,曲月华1,邓军华1(1.辽宁省鞍山市鞍钢股份公司技术中心)摘 要:本文选用三种不同熔融制样方式,研究了熔剂的性质,熔融制样的过程及加热方式等制样条件,探讨了X射线荧光光谱分析法的熔融制样技术.通过脱模剂加入量的试验,证明了在温度,熔融体流动性一致的情况下,挥发性脱模剂碘化铵可不必定量加入.针对铁矿石标准样品的特点,以四硼酸锂为熔剂,通过采用预氧化后高温熔融的制样程序,得到了优化的试验条件.结果表明,铁矿石试样熔融制样时间缩短至100 s/样,使得制样速度与粉......
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献标志码:A 文章编号:1672-7207(2015)04-1253-07 Preparation of water-based nano-WS2 isothermal forging lubricant and its application SHI Chen1, 2, 3, MAO Daheng2... application effect of water-based nano-WS2 lubricant is better than that of water-based graphitic lubricant or oil-based graphitic lubricant. Key words: WS2; nanometer; isothermal forging; preparation 等温模锻是在使......