Method for repairing silicide coating on surface of Mo alloy sheet
A silicide and thin plate technology, applied in the coating process and coating of metal materials, can solve the problems of poor heat resistance and high temperature oxidation resistance, and the coating is easy to fall off, so as to improve the oxidation resistance and reduce the cost of equipment. , good economic effect
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Embodiment 1
[0029] A method for repairing a silicide coating on the surface of a Mo alloy sheet, comprising the steps of:
[0030] (1) grinding and polishing the peeling part of the Mo alloy plate surface coating with a thickness of 3mm, cleaning and drying with alcohol;
[0031] (2) The mass percentage is composed of 93% MoSi 2 , 2% Nb, 3% Al, 1% Cr, 0.5% W, 0.2% B, 0.3% Ti alloy powders were placed in a star ball mill and mixed for 12 hours, and the ball milling speed was 350r / min to obtain MoSi 2 Main mixed alloy powder; MoSi 2 Powder purity is 99.9%, particle diameter is 1-3μm; Al powder purity is 99%, particle diameter is 3-5μm; Nb powder purity is 95%, particle diameter is 4-5μm; Cr powder purity is 97%, particle diameter The purity of W powder is 99%, and the particle diameter is 2-4μm; the purity of B powder is 98%, and the particle diameter is 3-5μm; the diameter of Ti powder is 96%, and the particle diameter is 4-6μm;
[0032](3) After ball milling, the powder uses ethanol as...
Embodiment 2
[0041] A method for repairing a silicide coating on the surface of a Mo alloy sheet, comprising the steps of:
[0042] (1) grinding and polishing the peeling part of the Mo alloy plate surface coating with a thickness of 3mm, cleaning and drying with alcohol;
[0043] (2) The mass percentage is composed of 92.6% MoSi 2 , 2% Nb, 3% Al, 1.5% Cr, 0.5% W, 0.3% B, 0.1% Ti alloy powders were placed in a star ball mill and mixed for 12 hours, and the ball milling speed was 350r / min to obtain MoSi 2 Main mixed alloy powder; MoSi 2 Powder purity is 99.9%, particle diameter is 1-3μm; Al powder purity is 99%, particle diameter is 3-5μm; Nb powder purity is 95%, particle diameter is 4-5μm; Cr powder purity is 97%, particle diameter The purity of W powder is 99%, and the particle diameter is 2-4μm; the purity of B powder is 98%, and the particle diameter is 3-5μm; the diameter of Ti powder is 96%, and the particle diameter is 4-6μm;
[0044] (3) After ball milling, the powder uses ethan...
Embodiment 3
[0048] A method for repairing a silicide coating on the surface of a Mo alloy sheet, comprising the steps of:
[0049] (1) grinding and polishing the peeling part of the Mo alloy plate surface coating with a thickness of 3mm, cleaning and drying with alcohol;
[0050] (2) The mass percentage is composed of 91% MoSi 2 , 3% Nb, 4% Al, 1% Cr, 0.7% W, 0.2% B, 0.1% Ti alloy powder was placed in a star ball mill and mixed for 12 hours, and the ball milling speed was 350r / min to obtain MoSi 2 Main mixed alloy powder; MoSi 2 Powder purity is 99.9%, particle diameter is 1-3μm; Al powder purity is 99%, particle diameter is 3-5μm; Nb powder purity is 95%, particle diameter is 4-5μm; Cr powder purity is 97%, particle diameter The purity of W powder is 99%, and the particle diameter is 2-4μm; the purity of B powder is 98%, and the particle diameter is 3-5μm; the diameter of Ti powder is 96%, and the particle diameter is 4-6μm;
[0051] (3) After ball milling, the powder uses ethanol as ...
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