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晶间氧化怎样理解
更新时间: 2020-08-18 00:00:00  

晶间氧化,沿金属或合金晶界优先发生的氧化过程,氧化的原因是外来的氧原子沿晶界扩散比在品粒内部扩散更快,从而沿晶界生成金属氧化物。材料发生晶间氧化后表而层强度、延性和闭性都大大降低,对于高温卜仗用的重要构件,例如航竺发动机部件,要求严格控制品间氧化速率。

关键词: 氧化 怎样 理解

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