Method to produce high corrosion and wear resistant cast iron components by water jet surface activation, nitrocarburization and thermal spray coating
US-2024084430-A1 · Mar 14, 2024 · US
Piston ring
US2016281202A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016281202-A1 |
| Application number | US-201615178823-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 10, 2016 |
| Priority date | Oct 25, 2011 |
| Publication date | Sep 29, 2016 |
| Grant date | — |
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Abstract
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A piston ring is provided with a thermal spray coating that contains tungsten carbide and chrome carbide as a hard phase, and contains nickel as a metallic binder phase, and is characterized in that the thermal spray coating is formed by the spraying of a thermal spray powder that has been produced by means of a granulation sintering method, and that contains hard particles in which the mean particle diameter of the tungsten carbide has been adjusted by means of a BET method to fall within a range of not less than 0.15 μm and not more than 0.45 μm.
First claim
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1 . A method of coating a piston ring comprising: applying a thermal spray coating to the piston ring, the thermal spray coating containing tungsten carbide, chromium carbide and nickel, wherein the thermal spray coating is formed by spraying a thermal spray powder that contains tungsten carbide particles in which the mean particle diameter of the tungsten carbide particles is in a range of not less than 0.15 μm and not more than 0.45 μm. 2 . The method of coating the piston ring according to claim 1 , wherein the thermal spray coating has a composition that contains 7.0 wt % of nickel, 20 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 3 . The method of coating the piston ring according to claim 1 , wherein the thermal spray coating has a composition that contains 12.5 wt % of nickel, and 37.5 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 4 . The method of coating the piston ring according to claim 1 , wherein the thermal spray coating contains nickel within a range of not less than 7.0 wt % and not more than 18.5 wt %. 5 . The method of coating the piston ring according to claim 4 , wherein the thermal spray coating has a composition that contains 7.0 wt % of nickel, 20 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 6 . The method of coating the piston ring according to claim 4 , wherein the thermal spray coating has a composition that contains 12.5 wt % of nickel, and 37.5 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 7 . The method of coating the piston ring according to claim 1 , wherein a porosity of the thermal spray coating is 3% or less. 8 . The method of coating the piston ring according to claim 1 , wherein the thermal spray coating is formed by spraying using a high-speed frame spraying method. 9 . A method of coating a component comprising: applying a thermal spray coating to the component, the thermal spray coating containing tungsten carbide, chromium carbide, and nickel, wherein the thermal spray coating is formed by the spraying of a thermal spray powder that contains tungsten carbide particles in which the mean particle diameter of the tungsten carbide particles is in a range of not less than 0.15 μm and not more than 0.45 μm. 10 . The method of coating the component according to claim 9 , wherein the thermal spray coating has a composition that contains 7.0 wt % of nickel, 20 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 11 . The method of coating the component according to claim 9 , wherein the thermal spray coating has a composition that contains 12.5 wt % of nickel and 37.5 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 12 . The method of coating the component according to claim 9 , wherein the thermal spray coating contains nickel within a range of not less than 7.0 wt % and not more than 18.5 wt %. 13 . The method of coating the component according to claim 12 , wherein the thermal spray coating has a composition that contains 7.0 wt % of nickel, 20 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 14 . The method of coating the component according to claim 12 , wherein the thermal spray coating has a composition that contains 12.5 wt % of nickel, and 37.5 wt % of chromium carbide, and the remainder is made up of tungsten carbide and impurities. 15 . The method of coating the component according to claim 9 , wherein a porosity of the thermal spray coating is 3% or less. 16 . The method of coating the component according to claim 9 , wherein the thermal spray coating is formed by spraying using a high-speed frame spraying method.
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- What does patent US2016281202A1 cover?
- A piston ring is provided with a thermal spray coating that contains tungsten carbide and chrome carbide as a hard phase, and contains nickel as a metallic binder phase, and is characterized in that the thermal spray coating is formed by the spraying of a thermal spray powder that has been produced by means of a granulation sintering method, and that contains hard particles in which the mean pa…
- Who is the assignee on this patent?
- Ihi Corp, Diesel United Ltd
- What technology area does this patent fall under?
- Primary CPC classification C23C4/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Sep 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).