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ASM Handbook

Powder Metallurgy

Edited by
P. Samal
P. Samal
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J. Newkirk
J. Newkirk
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ASM International
Volume
7
ISBN electronic:
978-1-62708-175-7
Publication date:
2015
Book Chapter

Sintering of Hardmetals

By
Animesh Bose
Animesh Bose
Materials Processing, Inc.
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Rajendra Sadangi
Rajendra Sadangi
Armament Research, Development and Engineering Center
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Pankaj K. Mehrotra
Pankaj K. Mehrotra
Kennametal Inc.
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Published:
2015
Page range:
720 - 725
Publication history
August 26, 2015

Abstract

This article discusses two major sintering methods: pressureless and pressure-assisted sintering. Pressureless sintering techniques include vacuum and partial-pressure, hydrogen, and microwave sintering. Pressure-assisted consolidation techniques include overpressure sintering, sintering followed by postsinter hot isostatic pressing, hot pressing, and several rapid hot consolidation techniques. The article describes nitrogen sintering and the sintering of cermets. It reviews the furnaces used for sintering and presents the lubrication removal techniques. The article also outlines the need to control carbon and oxygen to obtain optimal properties and explains microstructure development and grain size control.

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Animesh Bose, Rajendra Sadangi, Pankaj K. Mehrotra, 2015. "Sintering of Hardmetals", Powder Metallurgy, P. Samal, J. Newkirk

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