Nanomaterial Deposits Formed by DC Plasma Spraying of Liquid Feedstocks
An experimental system consisting of an axial feed plasma gun, a variable‐rate liquid delivery system, a liquid atomizer‐feeder, and a substrate movement and control system was designed and assembled for preparing nanograined ceramic deposits. Sprayed deposits were produced with different spray and...
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| Veröffentlicht in: | Journal of the American Ceramic Society 1998-01, Vol.81 (1), p.121-128 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Karthikeyan, Jeganathan Berndt, Christopher C. Reddy, Sri Wang, Jenn-Yue King, Alexander H. Herman, Herbert |
| description | An experimental system consisting of an axial feed plasma gun, a variable‐rate liquid delivery system, a liquid atomizer‐feeder, and a substrate movement and control system was designed and assembled for preparing nanograined ceramic deposits. Sprayed deposits were produced with different spray and sol feed parameters and investigated in both the as‐sprayed and heat‐treated conditions. As‐sprayed deposits were predominately hydroxide phases and were strongly adherent to the substrates. Postspray heat treatment at 873 K led to conversion of the alumina and zirconia deposits to γ‐alumina and tetragonal zirconia phases, respectively. Subsequent heat treatment at 1273 K resulted in densification of the deposits and formation of high‐temperature phases. A small increase in the grain size was observed with heat treatment, but the specimens still retained nanosized grains. |
| doi_str_mv | 10.1111/j.1151-2916.1998.tb02303.x |
| format | Article |
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| source | Access via Wiley Online Library |
| subjects | Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Methods of deposition of films and coatings film growth and epitaxy Physics Spray coating techniques |
| title | Nanomaterial Deposits Formed by DC Plasma Spraying of Liquid Feedstocks |
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