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peng sha yan yu zhong shen zuo de shi yan
Pages: 37
Year: Issue:  1
Journal: Heat Treatment of Metals

Keyword:  无水硼砂盐浴温度结晶水保温试验工艺过程渗层铝粉不锈钢板实验室;
Abstract: <正> 我们用一台实验室用的坩埚电阻炉进行了硼砂盐浴中渗铌的试验。坩埚由不锈钢板焊成(材料为1Cr18Ni9Ti 钢,厚度为2毫米)。盐浴配方为:无水硼砂~95%(若为含有结晶水的硼砂则相应按比例增加);铌粉(>98%Nb)~4%,铝粉~1%。工艺过程是先将无水硼砂放入坩埚内熔化(若含结晶水者先放在450~500℃保温充分脱水),再将干燥的铌粉拌和少量无水硼砂加进盐浴,在盐浴温度达900~1000℃范围时保温。将铝粉加入保温后的
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