Investigation of Porous NiAl Intermetallics Prepared by Self-Propagating High-Temperature Synthesis

Jie Wu; Hong Zhi Cui; Liang Liang Zeng

doi:10.4028/www.scientific.net/AMR.652-654.1102

Paper Titles

Microstructure and Mechanical Property of the Directionally Solidified NiAl-Cr(Mo)-Hf/Ho Alloy
p.1084

Research on Corrosion Rate Prediction of Aluminum Alloys in Typical Domestic Areas Based on BP Artificial Neural Network
p.1088

The Precipitation Behavior of γ' Phase in Superalloy FGH96 during Continuous Solution Cooling Conditions
p.1092

In Situ Study of Stress-Induced Martensitic Transformation in Ni₄₇Ti₄₄Nb₉ Shape-Memory Alloys
p.1096

Investigation of Porous NiAl Intermetallics Prepared by Self-Propagating High-Temperature Synthesis
p.1102

Microstructure and Growth Behavior of the Intermetallic Compound for Sn-1.0Ag-0.5Cu-NiB/Cu Solder Joint Interface
p.1106

Eutectoid Transformation in Zn Alloy with High Al Content
p.1111

High Temperature Oxidation Behaviour of AlCuTiFeNiCr High-Entropy Alloy
p.1115

Microstructure Evolution of Al-Ti-C Alloy Wires during Remelting Process
p.1119

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Investigation of Porous NiAl Intermetallics Prepared by Self-Propagating High-Temperature Synthesis

Abstract:

Porous NiAl intermetallics with different porosities were successfully prepared by self-propagating high-temperature synthesis (SHS). Examination of the reaction process between Ni and Al as well as the oxidation properties of the resultant materials was carried out. The melting of Al is the precondition for the reaction between Ni and Al, the reaction process can be explained by dissolution-precipitation mechanism. Only minor weight gain (0.06%~0.24%) and stable pore structures of porous materials after 200 hours oxidation at 650°C indicate that porous NiAl intermetallics have excellent oxidation resistance.