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Suspension plasma sprayed composite coating using amorphous powder feedstock |
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| Authors: | Dianying Chen Eric H. Jordan |
| Affiliation: | a Department of Chemical, Materials and Biomolecular Engineering, Institute of Materials Science, University of Connecticut, 97 N Eagleville Rd U-3136, Storrs, CT 06269, USA b Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269, USA |
| Abstract: | Al2O3-ZrO2 composite coatings were deposited by the suspension plasma spray process using molecularly mixed amorphous powders. X-ray diffraction (XRD) analysis shows that the as-sprayed coating is composed of α-Al2O3 and tetragonal ZrO2 phases with grain sizes of 26 nm and 18 nm, respectively. The as-sprayed coating has 93% density with a hardness of 9.9 GPa. Heat treatment of the as-sprayed coating reveals that the Al2O3 and ZrO2 phases are homogeneously distributed in the composite coating. |
| Keywords: | Alumina Zirconia Suspension plasma spray Amorphous powders Nanocomposites |
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