Effect of preheating treatment at 575 °C of green compacts on porous NiAl

H. X. Dong; Y. H. He; J. Zou; N. P. Xu; B. Y. Huang; C. T. Liu

doi:10.1016/j.jallcom.2009.12.018

Effect of preheating treatment at 575 °C of green compacts on porous NiAl

H. X. Dong, Y. H. He, J. Zou, N. P. Xu, B. Y. Huang, C. T. Liu

College of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The effect of preheating treatment on NiAl compacts was systematically investigated. The preheating treatment of green compacts at 575 °C preserves their original shapes. The formation of porous NiAl alloys usually accompanies with the volume expansion due to the formation of Ni₂Al₃ during the preheating treatment. The pore structures of porous NiAl alloys strongly depended on the preheating duration. The volume expansion, porosity and the maximum pore size increased with prolonged preheating treatment duration. Whereas the maximum pore size of final product decreased with increased preheating treatment duration. It has been found that the pore structures especially the maximum pore size strongly depend on the volume expansion determined by the intensity of exothermic reaction from the preheating temperature to the finally sintering temperature.

Original language	English
Pages (from-to)	219-225
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	492
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2009.12.018
State	Published - 4 Mar 2010

Keywords

NiAl intermetallics
Porous materials
Preheating treatment

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10.1016/j.jallcom.2009.12.018

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title = "Effect of preheating treatment at 575 °C of green compacts on porous NiAl",

abstract = "The effect of preheating treatment on NiAl compacts was systematically investigated. The preheating treatment of green compacts at 575 °C preserves their original shapes. The formation of porous NiAl alloys usually accompanies with the volume expansion due to the formation of Ni2Al3 during the preheating treatment. The pore structures of porous NiAl alloys strongly depended on the preheating duration. The volume expansion, porosity and the maximum pore size increased with prolonged preheating treatment duration. Whereas the maximum pore size of final product decreased with increased preheating treatment duration. It has been found that the pore structures especially the maximum pore size strongly depend on the volume expansion determined by the intensity of exothermic reaction from the preheating temperature to the finally sintering temperature.",

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AU - Dong, H. X.

AU - He, Y. H.

AU - Zou, J.

AU - Xu, N. P.

AU - Huang, B. Y.

AU - Liu, C. T.

PY - 2010/3/4

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AB - The effect of preheating treatment on NiAl compacts was systematically investigated. The preheating treatment of green compacts at 575 °C preserves their original shapes. The formation of porous NiAl alloys usually accompanies with the volume expansion due to the formation of Ni2Al3 during the preheating treatment. The pore structures of porous NiAl alloys strongly depended on the preheating duration. The volume expansion, porosity and the maximum pore size increased with prolonged preheating treatment duration. Whereas the maximum pore size of final product decreased with increased preheating treatment duration. It has been found that the pore structures especially the maximum pore size strongly depend on the volume expansion determined by the intensity of exothermic reaction from the preheating temperature to the finally sintering temperature.

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KW - Porous materials

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JO - Journal of Alloys and Compounds

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IS - 1-2

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Effect of preheating treatment at 575 °C of green compacts on porous NiAl

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Keywords

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