Body comprising hard face structure and method for making same
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United States of America Patent
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Jun 17, 2014
Grant Date -
May 23, 2013
app pub date -
Jul 6, 2011
filing date -
Jul 9, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A body, such as a pick tool for cutting coal, includes a steel substrate and a hard face structure fused to the steel substrate. The hard face structure includes at least 1 weight percent Si, at least 5 weight percent Cr and at least 40 weight percent W. Substantially the balance of the hard face structure includes carbon and an iron group metal M selected from Fe, Co, Ni and alloy combinations of these elements. The hard face structure includes a plurality of elongate or platelike micro-structures having a mean length of at least 1 micron, a plurality of nano-particles having a mean size of less than 200 nanometers, and a binder material.
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