MECHANISM OF OXIDATION OF NICKEL-ALLOY WITH 10-PERCENT CHROMIUM

被引:0
作者
RYABKINA, MM [1 ]
ROGELBERG, IL [1 ]
机构
[1] MOSCOW NONFERROUS MET ENRICHMENT RES & DESIGN INST,MOSCOW,USSR
来源
PROTECTION OF METALS | 1977年 / 13卷 / 01期
关键词
D O I
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中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The first stage of oxidation is controlled by the diffusion of the Ni**2** plus ions through the NiO and the second by the diffusion of the Cr**3** plus ions through the Cr//2O//3. The length of the transition period is determined by the time necessary for the formation of a continuous layer of Cr//2O//3 at the alloy-scale boundary and depends upon the relationship of the flows of chromium and oxygen in the alloy. Since the diffusion permeability of Cr//2O//3 is much less than that of NiO, the heat resistance of the alloy is determined by whether the Cr//2O//3 layer is formed and how rapidly it forms.
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页码:82 / 85
页数:4
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