High strength corrosion resistant high velocity oxy fuel (HVOF) coating for downhole tools
US10590704B2 · kind B2 · utility
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3References
14Claims
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Key dates
| Filing date | Jun 28, 2012 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Sep 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A downhole tool comprises a body made of a metal or metal alloy. In addition, the downhole tool comprises a coating disposed on the body. The coating includes at least 75 vol % tungsten carbide having an average grain size less than 1.0 μm. The content of tungsten carbide in the coating with a grain size less than 0.5 μm is between 40 and 64 vol % of the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.