Flame-Sprayed Y2O3 Films with Metal-EDTA Complex Using Various Cooling Agents
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- 作者：Keiji Komatsu ; Ayumu Toyama ; Tetsuo Sekiya…
- 关键词：film ; heat capacity ; metal ; EDTA ; metal oxide ; thermal history
- 刊名：Journal of Thermal Spray Technology
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：26
- 期：1-2
- 页码：195-202
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Surfaces and Interfaces, Thin Films; Tribology, Corrosion and Coatings; Characterization and Evaluation of Materials; Operating Procedures, Materials Treatment; Analytical Chemistry;
- 出版者：Springer US
- ISSN：1544-1016
- 卷排序：26
文摘
In this study, yttrium oxide (Y2O3) films were synthesized from a metal-ethylenediaminetetraacetic (metal-EDTA) complex by employing a H2-O2 combustion flame. A rotation apparatus and various cooling agents (compressed air, liquid nitrogen, and atomized purified water) were used during the synthesis to control the thermal history during film deposition. An EDTA·Y·H complex was prepared and used as the staring material for the synthesis of Y2O3 films with a flame-spraying apparatus. Although thermally extreme environments were employed during the synthesis, all of the obtained Y2O3 films showed only a few cracks and minor peeling in their microstructures. For instance, the Y2O3 film synthesized using the rotation apparatus with water atomization units exhibited a porosity of 22.8%. The maximum film’s temperature after deposition was 453 °C owing to the high heat of evaporation of water. Cooling effects of substrate by various cooling units for solidification was dominated to heat of vaporization, not to unit’s temperatures.