초록 ▼

Disclosed is a thermal spray powder of granulated and sintered cermet particles, which contains tungsten carbide or chromium carbide, and a silicon-containing iron-based alloy. The content of the alloy in the thermal spray powder is preferably 5 to 40% by mass. In this case, the alloy contains silic

Disclosed is a thermal spray powder of granulated and sintered cermet particles, which contains tungsten carbide or chromium carbide, and a silicon-containing iron-based alloy. The content of the alloy in the thermal spray powder is preferably 5 to 40% by mass. In this case, the alloy contains silicon in a content of 0.1 to 10% by mass.

대표청구항 ▼

1. A thermal spray powder comprising granulated and sintered cermet particles, wherein the powder contains tungsten carbide or chromium carbide, and a silicon-containing iron-based alloy, wherein the alloy contains silicon in a content of about 3% to 10% by mass. 2. The thermal spray powder accordin

1. A thermal spray powder comprising granulated and sintered cermet particles, wherein the powder contains tungsten carbide or chromium carbide, and a silicon-containing iron-based alloy, wherein the alloy contains silicon in a content of about 3% to 10% by mass. 2. The thermal spray powder according to claim 1, wherein the alloy is contained in the thermal spray powder in a content of 5 to 40% by mass. 3. The thermal spray powder according to claim 2, wherein the alloy further contains 0.5 to 20% by mass of chromium. 4. The thermal spray powder according to claim 3, wherein the alloy further contains 5 to 20% by mass of nickel. 5. The thermal spray powder according to claim 4, wherein the alloy further contains at least one of aluminum, molybdenum, and manganese. 6. The thermal spray powder according to claim 5, wherein the tungsten carbide or chromium carbide accounts for the balance of the thermal spray powder excluding the alloy. 7. The thermal spray powder according to claim 2, wherein the alloy further contains 5 to 20% by mass of nickel. 8. The thermal spray powder according to claim 2, wherein the alloy further contains at least one of aluminum, molybdenum, and manganese. 9. The thermal spray powder according to claim 1, wherein the tungsten carbide or chromium carbide accounts for the balance of the thermal spray powder excluding the alloy. 10. A method of forming a thermal spray coating, comprising thermally spraying the thermal spray powder according to claim 1 by cold spraying to form the thermal spray coating. 11. A method of forming a thermal spray coating, comprising thermally spraying the thermal spray powder according to claim 1 by high pressure cold spraying to form the thermal spray coating. 12. A method of forming a thermal spray coating, comprising thermally spraying the thermal spray powder according to claim 1 by low pressure cold spraying to form the thermal spray coating. 13. The thermal spray powder according to claim 1, wherein the granulated and sintered cermet particles have a liquid phase appearance temperature of about 1,150 Corless. 14. The thermal spray powder according to claim 1, wherein the granulated and sintered cermet particles have a compressive strength of about 100 MPa to about 800 MPa.