THERMAL SPRAY APPLICATIONS USING IRON BASED ALLOY POWDER

World Intellectual Property Organization Patent

APP PUB NO WO-2013134606-A2
SERIAL NO

PCTUS2013029792

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Abstract

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A thermal spray powder 20 is provided for use in a thermal spray technique, such as flame spraying, plasma spraying, cold spraying, and high velocity oxygen fuel spraying (HVOF). The thermal spray powder 20 is formed by water or gas atomization and comprises 3.0 to 7.0 wt. % carbon, 10.0 to 25.0 wt. % chromium, 1.0 to 5.0 wt. % tungsten, 3.5 to 7.0 wt. % vanadium, 1.0 to 5.0 wt. % molybdenum, not greater than 0.5 wt. % oxygen, and at least 40.0 wt. % iron, based on the total weight of the thermal spray powder 20. The thermal spray powder 20 can be applied to a metal body, such as a piston or piston ring, to form a coating. The thermal spray powder 20 can also provide a spray-formed part.

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