OXIDATION BEHAVIOR OF TIAL3 COATINGS AND ALLOYS

被引：68

作者：

SMIALEK, JL

机构：

[1] NASA Lewis Research Center, Cleveland, OH 44135

来源：

CORROSION SCIENCE | 1993年 / 35卷 / 5-8期

关键词：

D O I：

10.1016/0010-938X(93)90340-M

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Various thicknesses of TiAl3 coatings were produced on Ti3Al by pack aluminizing at various processing conditions. Thick coatings affected oxidation by increasing the amount of cracking and oxidation within the coating. Bulk TiAl3 and Al67X8Ti25 tau-phase alloys were oxidized in cyclic and isothermal oxidation from 800 to 1200-degrees-C. Anomalously high oxidation rates for TiAl3 were related to second phase aluminum oxidation and were eliminated by alloying. Chromium had an overall beneficial effect, while manganese additions could be catastrophic. Cyclic oxidation below 1000-degrees-C proved to be excellent for all alloys, while at 1200-degrees-C, spalling to bare metal, aluminum depletion and excessive TiO2 formation were related to more excessive degradation.

引用

页码：1199 / 1208

页数：10

共 4 条

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Hebsur M.G., 1989, OXIDATION HIGH TEMPE, P171

[2] OXIDATION BEHAVIOR OF CUBIC PHASES FORMED BY ALLOYING AL3TI WITH CR AND MN [J].

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[3] CYCLIC OXIDATION OF ALUMINIDE COATINGS ON TI3AL+NB [J].

SMIALEK, JL ;

GEDWILL, MA ;

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[4] OXIDATION-KINETICS OF CAST TIAL3 [J].

SMIALEK, JL ;

HUMPHREY, DL .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 26 (11) :1763-1768

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