用X射线衍射和电子显微镜对稀土硅铁合金粉化原因进行了研究,REP或CeC_2,La_2C_3的存在是合金粉化的原因,合金应力腐蚀与氢脆加速了合金的粉化。
An investigation of self-powdering of RE-Si-Fe alloy was conducted by means of X-ray diffraction analysis and electron microscopy. It is identified that the presence of REP, or CeC_2, La_2C_3 may be the cause of self-powdering when it exposed to weather or soaked in water. Its self-powdering behaviour is aggravated by both hydrogen embrittlement and stress corrosion.
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