THE INFLUENCE OF SULFUR ON ADHERENCE OF AL2O3 GROWN ON FE-CR-AL ALLOYS

被引：72

作者：

SIGLER, DR

机构：

[1] GM, Warren, MI, USA, GM, Warren, MI, USA

来源：

OXIDATION OF METALS | 1988年 / 29卷 / 1-2期

关键词：

HEAT TREATMENT - Annealing - SULFUR;

D O I：

10.1007/BF00656348

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Recently a new theory was proposed to explain the effect that reactive elements have an oxide adherence. Based on data obtained on Ni-Cr-Al-Y material, this theory stated that trace quantities of sulfur in the alloy degrade adherence by weakening the metal-Al//2O//3 bond. The work presented extends this concept to Fe-Cr-Al alloys. Results show that long-time vacuum anneals increase the adherence of aluminum oxide concurrent with removal of sulfur from the matrix. This evidence shows that Al//2O//3-metal Y or rare earths in the alloy. Sulfur in the alloy and not void formation was responsible for oxide spalling. In addition, voids were eliminated by reducing the sulfur concentration near the oxide-metal interface.

引用

页码：23 / 43

页数：21

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