Hardfacing compositions including ruthenium, earth-boring tools having such hardfacing, and related methods
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United States of America Patent
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Jun 7, 2016
Grant Date -
Sep 4, 2014
app pub date -
Mar 1, 2013
filing date -
Mar 1, 2013
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Abstract
Hardfacing compositions include grains of hard material embedded within a cobalt-based metal alloy that includes ruthenium. Earth-boring tools include such hardfacing compositions on one or more surfaces thereof. Methods of applying hardfacing to an earth-boring tool include embedding grains of hard material in a molten cobalt-based metal alloy including ruthenium on a surface of an earth-boring tool, and cooling and solidifying the molten cobalt-based metal alloy with the grains of hard material embedded therein.
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