SYNTHESIS OF BULK AND REINFORCED NICKEL ALUMINIDES BY REACTIVE INFILTRATION

被引：46

作者：

DUNAND, DC ^{[1
]}

SOMMER, JL ^{[1
]}

MORTENSEN, A ^{[1
]}

机构：

[1] TECH RES ASSOCIATES,SALT LAKE CITY,UT 84108

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1993年 / 24卷 / 10期

关键词：

D O I：

10.1007/BF02648590

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Preforms of nickel powder or nickel/alumina powder blends were infiltrated with molten aluminum to produce nickel aluminides. Application of a pressure of 3.6 and 6.9 MPa on the melt allowed infiltration of preforms with nickel powder particles between 5 and 15 mum in diameter, which could not be infiltrated under the sole action of capillary forces. By varying the initial preform temperature from 705-degrees-C to 280-degrees-C, the diameter of nickel powder particles from 15 to 150 mum, and the volume fraction of alumina from 0 to 34 vol pct, pressure-infiltrated samples with large variations in the extent of reaction between nickel and aluminum were produced. The range of microstructure extended from fully reacted nickel aluminide to essentially unreacted nickel/aluminum samples containing low levels of final porosity. In particular, it was found that reducing the initial preform temperature below the melting point of aluminum results in a reduction of the rate and extent of aluminide formation, allowing, in turn, reduction of macrosegregation within the resulting infiltrated material.

引用

页码：2161 / 2170

页数：10

共 35 条

[1]

ALMAN D, 1989, PROCESSING CERAMIC M, P217

[2]

ALMAN DE, 1991, INT J POWDER METALL, V27, P29

[3]

ALMAN DE, 1991, ADV COMPOSITE MATERI, P831

[4]

Anselmi-Tamburini U., 1990, COMBUSTION PLASMA SY, P100

[5]

ANTON DL, 1988, HIGH TEMPERATURE HIG, V194, P57

[6]

BARIN I, 1977, THERMOCHEMICAL PROPE, V11, P490

[7]

BARIN I, 1977, THERMOCHEMICAL PROPE, V11, P460

[8] SQUEEZE CAST METAL MATRIX COMPOSITES - EVALUATION OF THEIR STRENGTH, DAMPING CAPACITY AND CORROSION-RESISTANCE [J].

BHAGAT, RB ;

AMATEAU, MF ;

CONWAY, JC ;

PAULICK, JM ;

CHISHOLM, JM ;

PARNELL, JM ;

SEIDENSTICKER, DG .

JOURNAL OF COMPOSITE MATERIALS, 1989, 23 (09) :961-975

[9]

BOSE A, 1988, POWDER METALL INT, V20, P25

[10] ELEMENTAL POWDER APPROACHES TO NI3AL-MATRIX COMPOSITES [J].

BOSE, A ;

MOORE, B ;

GERMAN, RM ;

STOLOFF, NS .

JOURNAL OF METALS, 1988, 40 (09) :14-17

← 1 2 3 4 →