TiAl-based alloy high-temperature oxidation resistant coating and method for implementing same
An anti-oxidation, alloy-based technology, which is applied in the field of high-temperature anti-oxidation coatings for TiAl-based alloys, can solve problems such as uneven deformation of TiAl-based alloys, decreased oxidation resistance of alloys, and difficulty in separating the sheath from the alloy. Deformability, good bonding performance, and low cost of process implementation
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Embodiment 1
[0021] SiO 2 80%, Na 2 O19%, CaO 1% (mass percentage) mixed evenly, and fired at 1400°C for 2h to form glass. At 1200°C, apply the glass on the surface of a TiAl-based alloy with a side length of 10 mm, keep the bulk TiAl-based alloy protected by glass at 1200°C for 30 minutes, air cool to room temperature, remove the glass coating, and finish the surface of the TiAl-based alloy. , not oxidized.
Embodiment 2
[0023] SiO 2 80%, Na 2 O1%, CaO 19% (mass percentage) mixed evenly, and fired at 1400°C for 2h to form glass. At 1200°C, apply the glass on the surface of a TiAl-based alloy with a side length of 10 mm. Keep the bulk TiAl-based alloy protected by glass at 1250°C for 30 minutes. Air-cool to room temperature, remove the glass coating, and finish the surface of the TiAl-based alloy. , not oxidized.
Embodiment 3
[0025] SiO 2 65%, Na 2 O 15%, CaO 20% (mass percentage) mixed evenly, and fired at 1400°C for 1.5h to form glass. Soak a 30mm×25mm×8mm cuboid TiAl-based alloy in viscous fluid glass at 1200°C, keep it warm for 30 minutes, and then roll it. The deformation in one rolling pass is 8%, and then air-cool to room temperature. The surface of the TiAl-based alloy is not Significant oxidation occurs.
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