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zhouxin0426

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[求助] 请问化学反应可不可以是固相扩散的驱动力?请各位大侠帮帮忙啊!

请问化学反应可不可以是固相扩散的驱动力?我发现含Cr的合金上制备一层ZrO2陶瓷层,高温热处理后,Cr在ZrO2陶瓷层中无明显的扩散,而再在ZrO2陶瓷层上制备一层La2O3陶瓷层,高温热处理后发现Cr元素扩散到La2O3陶瓷层中去了,而且在La2O3陶瓷层大量富集,而ZrO2陶瓷层用EDS基本上检测不到Cr。想知道这种扩散是怎么回事,驱动力是不是Cr与La2O3之间的化学反应。请各位大侠帮帮忙啊!
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