Method for preparing oxidation resistant Ti-Al-Ag ternary coating
An anti-oxidation and coating technology, applied in the direction of coating, metal material coating process, melt sputtering, etc., can solve the problems of high cost and low efficiency of sputtering technology, and achieve improved anti-oxidation performance, low production cost, The effect of simple equipment and process
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Embodiment 1
[0028] The γ-TiAl powder has a purity of 99.95%, 30-50 μm, and the Al element accounts for 55% of the atomic percentage of the TiAl alloy. Ag purity 99.95%, 30-50 microns. Mix the two powders so that the moles of Ag account for 5% of the total moles of the three elements Al, Ti, and Ag, use chemically pure ethanol as the medium for wet ball milling, the frequency is 35HZ, the ball-to-material ratio is 3:2, and the mechanical Ball mill for 12 hours, dry at 100°C, and sieve through a vibrating sampling sieve with 300 meshes. The technical indicators of the obtained γ-TiAl and Ag composite powder are: the particle size of γ-TiAl is 0.1-5 microns, the particle size of Ag is 0.5-5 microns, and the Ag particles are evenly distributed in the γ-TiAl particles, or mixed with γ-TiAl particles. -TiAl embedded into larger particles. The above-mentioned composite powder is prepared into a powder suitable for spraying by atomization and drying method, and deposited on the titanium alloy s...
Embodiment 2
[0031] The purity of the γ-TiAl powder is 99.9%, 50-70 μm, and the Al element accounts for 53% of the atomic percentage of the TiAl alloy. Ag purity 99.9%, 50-70 microns. Mix the two powders so that the molar number of Ag accounts for 3% of the total molar number of the three elements of Al, Ti, and Ag, use chemically pure ethanol as the medium for wet ball milling, the frequency is 40HZ, the ball-to-material ratio is 3:2, and the mechanical Ball mill for 16 hours, dry at 200°C, and sieve through a vibrating sampling sieve with 300 meshes. The technical indicators of the obtained γ-TiAl and Ag composite powder are: the particle size of γ-TiAl is 1-5 microns, the particle size of Ag is 1-5 microns, and the Ag particles are evenly distributed in the γ-TiAl particles, or mixed with γ-TiAl -TiAl embedded into larger particles. The above-mentioned composite powder is prepared into a powder suitable for spraying by atomization and drying method, and deposited on the titanium alloy...
Embodiment 3
[0034] The purity of γ-TiAl powder is 99.5%, 70-100 μm, and the Al element accounts for 51% of the atomic percentage of TiAl alloy. Ag purity 99.5%, 70-100 microns. Mix the two powders so that the moles of Ag account for 2% of the total moles of Al, Ti, and Ag, use chemically pure ethanol as the medium for wet ball milling, the frequency is 45HZ, the ball-to-material ratio is 3:1, and the mechanical Ball mill for 24 hours, dry at 100°C, and sieve through a vibrating sampling sieve with 300 meshes. The technical indicators of the obtained γ-TiAl and Ag composite powder are: the particle size of γ-TiAl is 1-20 microns, the particle size of Ag is 1-20 microns, and the Ag particles are evenly distributed in the γ-TiAl particles, or mixed with γ-TiAl -TiAl embedded into larger particles. The above-mentioned composite powder is prepared into a powder suitable for spraying by atomization and drying method, and deposited on the titanium alloy substrate by vacuum plasma spraying tech...
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