Thermal spraying powder comprising chromium carbide and alloy containing cobalt or nickel, thermal spray coating, and hearth roll
US7776450B2 · kind B2 · utility
1Cited by
15References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 27, 2008 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Jul 31, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A thermal spraying powder contains 30 to 50% by mass of chromium carbide with the remainder being an alloy containing chromium, aluminum, yttrium, and at least one of cobalt and nickel. The thermal spraying powder has an average particle size of 20 to 60 μm. The thermal spraying powder may contain 20% by mass or less of yttrium oxide in place of a part of the alloy. A thermal spray coating obtained by thermal spraying of the thermal spraying powder, particularly, a thermal spray coating obtained by high-velocity flame spraying of the thermal spraying powder is suitable for the purpose of a hearth roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.