Development and Oxidation Behavior of Al-Cu-Fe Quasicrystalline Coating on Ti Alloy

材料科学技术（英文）, 2004, 20(6): 713-715.

^1, , ^2, , ^3, , ^4,

1.Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

2.Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

3.Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

4.Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

基金项目: The Aviation Science Foundation of China was acknowledged for financial support under(00H51006)

Development and Oxidation Behavior of Al-Cu-Fe Quasicrystalline Coating on Ti Alloy

Keywords： Low pressure plasma spray

An oxidation resistant Al-Cu-Fe quasicrystalline coating was fabricated on substrate of Ti alloy by Iow pressure plasma spraying (LPPS) method. As-sprayed Al-Cu-Fe coating has a rapidly solidified lamellar microstructure consisting of quasicrystalline phase and crystalline phase. The formation of quasicrystalline coating is related to the annealing. The results from the oxidation experiments showed that Al-Cu-Fe quasicrystalline coating improved the oxidation resistance of Ti-base alloys. During the oxidation period there is no evident spallation of the coating from the substrate. Oxide formed on the surface of Al-Cu-Fe quasicrystalline coating after oxidation consisted of Al2O3. Oxidation occurs leading to a change of concentration and phase transformation in the coating surface. Selective oxidation of Al transforms the quasicrystalline phase into the phase.

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Development and Oxidation Behavior of Al-Cu-Fe Quasicrystalline Coating on Ti Alloy

参考文献