Reactive Infiltration Processing and Compression Creep of NiAl and NiAl Composites
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چکیده
....................................... 2 TA BLE O F C O N TEN TS ................................................................................................. ..................................... 3 LIST OF FIGURES .................................. ............................... ....... ......................... 5 LIST O F T A B LE S ........................................................................ .................................................... ................ 8 ACKNOWLEDGMENTS ....................... ..................................................... 9 1 IN T R O D U C T IO N ............................................................................................................................................. 10 1.1 W hy NiAl, W , and NiAl-W ? .. .. .. .. .. .. . . . . . . . . .. .. ... ......... .. ........... . .. . .. .. .. .. .. .. .. . . . . . . . .. . 10 1.2 W hy Reactive Infiltration Process? ................................................ .. ......... ........................ 11 1.3 W hy com pression creep? .............................................................................................................................. 11 1.3.1 Monolithic homogeneous materials ........................................ ........................ 11 1.3.2 C om posite m aterials............................................................................................ ....................... 13 2 REACTIVE INFILTRATION PROCESSING OF NiAl AND NiAl COMPOSITES ................................... 18 2.
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Reactive Infiltration Processing and Secondary Compressive Creep of NiAl and NiAl-W Composites
Reactive infiltration processing was used to fabricate bulk NiAl and fiber-reinforced NiAl composites. Homogenous, pore-free materials were obtained by chemical reaction between nickel and aluminum after complete infiltration with liquid aluminum of preforms of nickel wires (containing tungsten wires for the composites) with low surface-to-volume ratio, high permeability, and regular infiltrati...
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