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The isothermal crystallization kinetics of amorphous Al-Ni-Zr alloy produced by mechanical alloying was studied by means of differential scanning calorimetry. Accordiag to Arrhenius equation, the apparent activation energy was calculated. The isothermal crystal-lization kinetics follows Johnson-Mehl-Avrami equation with n=2.00 within 0.15相似文献
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150keV Ar离子辐照非晶态合金Fe39Ni39Mo2Si12B8、Fe40Ni40Si12B8、Fe39Ni39V2Si12B8、Fe77Cr2Si5B16和Fe78Si10B12,用扫描电子显微镜(SEM)观测研究了表面损伤形貌剂量变化的过程.低剂量时表面发泡形成.发泡随剂量增加受到溅射腐蚀,表面形成坑洞或针孔,针孔密度随剂量增加而增加,高剂量时,表面损伤以溅射为主,溅射对表面的腐蚀导致多孔粗糙的表面损伤结构建立,并且这些结构与靶材料有着密切的关系. 相似文献
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