METHOD FOR MODIFICATION OF CEMENTED CARBIDES AND CEMENTED CARBIDES MODIFIED BY THE METHOD
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United States of America Patent
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Issued Date -
Jul 26, 2012
app pub date -
Aug 10, 2010
filing date -
Aug 10, 2009
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Abandoned
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Abstract
Provided are a method of modifying a cemented carbide and a cemented carbide modified by the method. Particularly provided is an advantageous method of modifying a cemented carbide layer formed by a thermal spraying method on a surface of a metal substrate. The method of modifying a cemented carbide includes applying a friction stir process to a cemented carbide, thereby allowing crystal grains in a binder phase included in the cemented carbide to become finer. It is possible to achieve modification effectively by applying the friction stir process particularly to a cemented carbide layer formed on a surface of a metal substrate by using the thermal spraying method.
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