EFFECT OF SUBSTRATE COMPOSITION ON THE OXIDATION BEHAVIOR OF PLATINUM-ALUMINIZED NICKEL-BASE SUPERALLOYS

被引：22

作者：

TAWANCY, HM ^{[1
]}

ABBAS, NM ^{[1
]}

RHYSJONES, TN ^{[1
]}

机构：

[1] ROLLS ROYCE PLC,MAT & MECH RES,BRISTOL BS12 QE,ENGLAND

来源：

SURFACE & COATINGS TECHNOLOGY | 1992年 / 54卷 / 1-3期

关键词：

D O I：

10.1016/0257-8972(92)90131-S

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Exposure to oxidation at 1000-degrees-C and 1100-degrees-C in still air was used to study the protective nature of a platinum-aluminide coating on selected nickel-base superalloys with the same aluminum content. Emphasis was placed on the thermal stability of the coating as well as the morphology, structure, and chemical composition of surface scale. Scanning electron microscopy, analytical electron microscopy and X-ray diffraction were used to characterize the microstructure. Interdiffusion between the coating and each substrate occurred at both temperatures, resulting in significant changes in coating structure and composition. Although the coatings on each alloy exhibited similar structural stability, they developed scales of different protective nature. Refractory and reactive elements in the substrates appeared to have the most significant effects.

引用

页码：1 / 7

页数：7

共 15 条

[1]

BARRETT CA, 1983, OXID MET, V201, P255

[2]

BERANGER G, 1989, ROLE ACTIVE ELEMENTS, P33

[3] OXIDATION OF NI-CR-AL ALLOYS BETWEEN 1000 DEGREES AND 1200 DEGREES C [J].

GIGGINS, CS ;

PETTIT, FS .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1971, 118 (11) :1782-&

[4]

Hagel, 1987, SUPERALLOYS, P359

[5]

HUNTZ AM, 1989, ROLE ACTIVE ELEMENTS, P81

[6] ALUMINIZATION OF PLATINUM AND PLATINUM-COATED IN-738 [J].

JACKSON, MR ;

RAIRDEN, JR .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1977, 8 (11) :1697-1707

[7]

KHAN AS, 1980, J ELECTROCHEM SOC, V127, P670

[8] OXIDATION OF SOME ADVANCED SINGLE-CRYSTAL NICKEL-BASE SUPERALLOYS IN AIR AT 2000-F (1093-C) [J].

LEVY, M ;

FARRELL, P ;

PETTIT, F .

CORROSION, 1986, 42 (12) :708-717

[9]

Pettit F. S., 1984, REFRACTORY ALLOYING, P165

[10]

Schaeffer J., 1989, ROLE ACTIVE ELEMENTS, P231

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