Resistance of titanium– chromium and zirconium–chromium alloys to air oxidation

被引：0

作者：

N. P. Brodnikovskii

I. V. Oryshich

N. E. Poryadchenko

T. L. Kuznetsova

N. D. Khmelyuk

E. A. Rokitskaya

机构：

[1] National Academy of Sciences of Ukraine,Frantsevich Institute for Problems of Materials Science

来源：

Powder Metallurgy and Metal Ceramics | 2010年 / 49卷

关键词：

titanium; zirconium; chromium; alloys; oxidation; kinetics; scale;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The influence of chromium (0.5-8 at.%) on the oxidation resistance of binary Ti and Zr alloys at 500–700°C and 50 h holding is investigated. It is shown that the oxidation of these alloys is described by a parabolic-law function at 500–600°C and a linear function at 700°C. It is established that 8 at.% Cr decreases the high-temperature oxidation resistance of titanium by 50–67%, but the chromium content up to 4 at.% hardly influences that of zirconium. Higher chromium concentrations also decrease the oxidation resistance. The results for titanium are attributed to specific chemical interaction of titanium and zirconium oxides and for zirconium to the structural factor associated with the formation of brittle ZrCr2 intermetallide.

引用

页码：454 / 459

页数：5