Pilling-Bedworth ratio for oxidation of alloys

被引：395

作者：

Xu, CH ^{[1
]}

Gao, W ^{[1
]}

机构：

[1] Univ Auckland, Dept Chem & Mat Engn, Auckland 1030, New Zealand

来源：

MATERIALS RESEARCH INNOVATIONS | 2000年 / 3卷 / 04期

关键词：

oxidation; alloy; B-P ratio; Ni-Al intermetallics;

D O I：

10.1007/s100190050008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the theory of Pilling-Bedworth ratio (PBR) for metals, PBR for oxidation of alloys is suggested PBRAlloy = Volume of a mole of BxOy/Volume of x moles of B in alloy. Three Al2O3 forming alloys (Ni3Al, NiAl and NiAl3) were used as examples to calculate PBR with this method. The results showed significant discrepancies compared with the PBR calculated with aluminium metal. Calculation with the traditional method gave the PBR value for oxidation of Al as 1.29; calculations with the modified method gave the PBR values for Ni3Al, NiAl and NiAl3 alloys as 1.71 similar to 1.88, 1.64 similar to 1.78, and 1.48 similar to 1.57, respectively.

引用

页码：231 / 235

页数：5

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