HIGH-TEMPERATURE MATERIAL TRANSFERRING MEMBER
A high-temperature material transferring member including a coating film formed on a surface of base metal, wherein the coating film is a composite coating film using a mixed powder made up of: a Co-based alloy powder containing, in mass %, 0.03 to 0.6% of C, 0.2 to 3% of Si, 22 to 35% of Cr, and more than 50% of Co; and a Cr carbide powder, the composite coating film is formed by the plasma powder overlaying process. The high-temperature material transferring member has excellent build-up resistance particularly in a gas atmosphere of 1100° C. or more. The high-temperature material transferring member has excellent in build-up resistance, oxidation resistance, and heat cracking resistance.
1 . A high-temperature material transferring member including a coating film formed on a surface of base metal by a plasma powder overlaying process, wherein the coating film is a composite coating film using a mixed powder made up of a Co-based alloy powder containing, in mass %, 0.03 to 0.6% of C, 0.2 to 3% of Si, 22 to 35% of Cr, and more than 50% of Co, and a Cr carbide powder.
2 . A high-temperature material transferring member including a coating film formed on a surface of base metal by a plasma powder overlaying process, wherein the coating film is a composite coating film using a mixed powder made up of: a Co-based alloy powder containing, in mass %, 0.03 to 0.6% of C, 0.2 to 3% of Si, 22 to 35% of Cr, and more than 50% of Co, with the balance being impurities; and a Cr carbide powder.
3 . The high-temperature material transferring member according to claim 2 , wherein the Co-based alloy powder further contains, in mass %, one or more elements selected from the following groups <1> to <4>:
<1> Mn: 10% or less, Cu: 10% or less, Ni: 10% or less, and Fe: 10% or less;
<2> Mo: 10% or less, and W: 10% or less;
<3> B: 3% or less, Ti: 3% or less, V: 3% or less, Zr: 3% or less, Nb: 3% or less, and Ta: 3% or less; and
<4> Al: 1% or less, Ca: 1% or less, and REM: 1% or less.
4 . The high-temperature material transferring member according to claim 1 , wherein the content of Cr carbide powder is 20 to 70 vol % in a volume ratio with respect to a total amount of mixed powder.
5 . The high-temperature material transferring member according to claim 2 , wherein the content of Cr carbide powder is 20 to 70 vol % in a volume ratio with respect to a total amount of mixed powder.
6 . The high-temperature material transferring member according to claim 3 , wherein the content of Cr carbide powder is 20 to 70 vol % in a volume ratio with respect to a total amount of mixed powder.
7 . The high-temperature material transferring member according to claim 1 , wherein an endothermic reaction temperature of the coating film is 1250° C. or more.
8 . The high-temperature material transferring member according to claim 2 , wherein an endothermic reaction temperature of the coating film is 1250° C. or more.
9 . The high-temperature material transferring member according to claim 3 , wherein an endothermic reaction temperature of the coating film is 1250° C. or more.
10 . The high-temperature material transferring member according to claim 4 , wherein an endothermic reaction temperature of the coating film is 1250° C. or more.
11 . The high-temperature material transferring member according to claim 5 , wherein an endothermic reaction temperature of the coating film is 1250° C. or more.
12 . The high-temperature material transferring member according to claim 6 , wherein an endothermic reaction temperature of the coating film is 1250° C. or more.
13 . The high-temperature material transferring member according to claim 2 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
14 . The high-temperature material transferring member according to claim 3 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
15 . The high-temperature material transferring member according to claim 5 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
16 . The high-temperature material transferring member according to claim 6 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
17 . The high-temperature material transferring member according to claim 8 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
18 . The high-temperature material transferring member according to claim 9 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
19 . The high-temperature material transferring member according to claim 11 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.
20 . The high-temperature material transferring member according to claim 12 , wherein the high-temperature material transferring member has excellent build-up resistance in a gas atmosphere of 1100° C. or more.