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运用座滴法研究了(Ti,Me)(C,N)/Ni体系的润湿性;运用经验电子理论(EET理论)计算了多元陶瓷相的价电子结构(VES),建立了陶瓷相化学成分与价电子结构的关系,并建立了价电子结构与接触角的回归关系式.结果表明,提高温度、延长保温时间均使体系接触角减小;碳化物的添加使体系接触角进一步减小,碳化物改善润湿性能力的大小依次为:Mo2C>TaC>WC>VC>NbC.不同碳化物的添加均能导致最强键上共价电子数nA增加,其中添加VC的影响最为明显,依次为VC>Mo2C>NbC>WC>TaC.

参考文献

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