Abstract
An oxidation resistant AlCuFe quasicrystalline coating was fabricated on substrate of Ti alloy by low pressure plasma spraying (LPPS) method. As-sprayed AlCuFe 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 AlCuFe quasicrystalline coating improved the oxidation resistance of Ti based alloys. During the oxidation period there is no evident spallation of the coating from the substrate. Oxide is formed on the surface of AlCuFe 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 γ phase.
| Original language | English |
|---|---|
| Pages (from-to) | 713-715 |
| Number of pages | 3 |
| Journal | Journal of Materials Science and Technology |
| Volume | 20 |
| Issue number | 6 |
| State | Published - Dec 2004 |
Keywords
- AlCuFe quasicrystal
- Coating
- Low pressure plasma spraying
- Oxidation
- Ti based alloy
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