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快速凝固Au-17.9at.-%Si薄带在大气中放置3年后,变得扭曲不平,性能变脆,共晶熔点消失,加热至131K才开始熔化,经分析,是由于共晶组织中的Si氧化成SiO_2。

The rapidly quenched Au-17.9at. -%Si ribbon has become twisted, brittle,disappeared from eutectic point and started to melt up to 1341 K after prolongedcrystallization for 3 years under atmospheric environment. This seems to be due to theoxidation of Si in the eutectic of Au-Si into SiO_2.

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