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US 12,661,709 B2Granted
Atomized powder, thermal spray coating, hearth roll, and method for producing hearth roll
AssigneesTocalo Co., Ltd., Sanyo Special Steel Co., Ltd.
InventorsYuhei Ohide, Tatsuo Suidzu, Toshiyuki Sawada, Tomoki Hirono
Life of this patent
Estimating the term…
Abstract
An atomized powder has a heat-resistant alloy phase and a Cr7C3 phase dispersed in the heat-resistant alloy phase, and contains 20 to 46% of Ni, 22 to 43% of Cr, 4 to 13% of Al, 0.1 to 1.0% of Y, and 0.3 to 4.2% of C on a mass basis, and a remainder thereof includes Co and unavoidable impurities.
Claims7
An atomized powder comprising a heat-resistant alloy phase and a Cr7C3 phase dispersed in the heat-resistant alloy phase, wherein
- the heat-resistant alloy phase is a Co-based alloy phase,
- the atomized powder contains 20 to 46% of Ni, 22 to 43% of Cr, 4 to 13% of Al, 0.1 to 1.0% of Y, and 0.3 to 4.2% of C on a mass basis, and a remainder thereof includes Co and unavoidable impurities, and
- a content of Cr7C3 in the atomized powder is not less than 5 mass % and not greater than 20 mass %.
Dependencies are inferred from the claim text.