Electric Power Research Institute Incorporated

Amax Incorporated

Evan K Ohriner

Tsuguyasu Wada

Howard Ocken

Edward P Whelan

Novel wear-resistant, anti-galling, cobalt-free hardfacing iron based alloys are provided which are useful for construction of plant or manufacturing facility components exposed to aggressive environments. The alloys are particularly useful to construct components used in the cooling systems of nuclear power plants.

Cobalt-free, iron-base hardfacing alloys

Solid solutions of molybdenum and tungsten having molybdenum to tungsten atom ratios between about 1:1 and about 10:1 are produced by heating a mechanically milled mixture of a molybdenum oxide and tungsten oxide to a temperature between about 1000.degree. C. and about 1300.degree. C. at a rate of at least about 20.degree. C. per minute in a hydrogen-containing atmosphere and holding at temperature to reduce the oxides of molybdenum and tungsten and to provide a homogeneous solid solution of molybdenum and tungsten. The homogeneous solid solution is mixed with a stoichiometric excess of carbon and heated to a temperature between about 1200.degree. C. and about 1800.degree. C. under a protective atmosphere to react the carbon with the alloy powder to form a solid solution of hexagonal monocarbides.

Growing community of inventors

Ann Arbor, MI, United States of America

Evan K Ohriner