In-situ TiB2 and Al2O3 formation by DC plasma spraying |
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| Authors: | Cagri Tekmen Yoshiki Tsunekawa Masahiro Okumiya |
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| Affiliation: | Toyota Technological Institute, Materials Processing Lab, 2-12-1, Hisakata Tempaku, 468-8511, Nagoya, Japan |
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| Abstract: | In-situ plasma spraying (IPS) is a promising process to fabricate composite coatings with in-situ formed thermodynamically stable phases. In the present study, mechanically alloyed Al-12Si, B2O3 and TiO2 powder was deposited onto an aluminum substrate using atmospheric plasma spraying (APS). It has been observed that, during the coating process, TiB2 and Al2O3 are in-situ formed through the reaction between starting powders and finely dispersed in hypereutectic Al-Si matrix alloy. Also, obtained results demonstrate that in-situ reaction intensity strongly depends on spray conditions. |
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| Keywords: | In-situ Reactive Plasma spray TiB2 Al2O3 TiO2 B2O3 Hypereutectic Al-Si |
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