【摘要】 利用电子束物理气相沉积(EB-PVD)方法制备了厚度为0.5mm的N i-20Cr-0.6A l(wt%)合金薄板。合金的晶粒尺寸小于100nm。研究了N i-20Cr-0.6A l合金在1000℃空气中氧化100h后的氧化产物。结果表明,100h后在合金表面只生成了连续致密的-αA l2O3氧化膜。Cr含量为20%时,纳米化使生成连续A l2O3膜所需的最小铝含量大幅度下降。更多还原

【Abstract】 Ni-20Cr-0.6Al（wt%） alloy thin sheet with 0.5mm thick was deposited by electron beam physical vapor deposition（EB-PVD）.The grain size of the alloy was less than 100nm.Oxide formation of Ni-20Cr-0.6Al alloy after 100h oxidation at 1000℃ in air was studied.The results indicated that a continuous and dense α-Al₂O₃ scale was formed after 100h oxidation.When the content of Cr was 20%,the minimal content of Al for the formation of a continuous Al₂O₃ scale significantly decreased by crystallization.更多还原