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A和A-B合金焊合后发生柯肯达尔效应,测得界面向A试样方向移动,则( ) 。

A、A组元的扩散速率大于B组元    

B、B组元的扩散速率大于A组元   

C、A、B两组元的扩散速率相同 

时间：2021-09-01 23:33 关键词：青书学堂黑龙江省教育学院材料与制作（高起专）

答案解析

A

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