Dense SiC Coatings as Barrier Layer on Graphite Heat Elements in Furnaces for Smelting Silicon in Photovoltaic Industry |
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| Authors: | Yang Wang Zhaofeng Chen ShengJie Yu Ruiying Luo Jiufeng Wang |
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| Affiliation: | 1. International Laboratory for Insulation and Energy Efficiency Materials, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, People's Republic of China;2. Suzhou Superlong Aviation Heat Resistance Material Technology Co., Ltd, Suzhou, People's Republic of China;3. Center of Materials Physics and Chemistry, School of Physics and Nuclear Energy Engineering, Beijing University of Aeronautics and Astronautics, Beijing, People's Republic of China |
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| Abstract: | This study puts forward an application of a dense SiC coating of graphite heat elements as a barrier layer to prevent the spoilage of the purity of photovoltaic Si elements by impurities of the graphite. The SiC barrier performance in high‐temperature vacuum environment has been analyzed measuring the mass loss of graphite with/without coating of 5, 20, 30 μm 1200, 1400, and 1600°C. A thickness of 20 μm showed to be the best choice and could reduce the weight loss by more than 90%. The adhesion strength of samples decreased with the increase in heat treatment temperature. |
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| Keywords: | photovoltaic barrier performance SiC coating graphite |
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