Silica gel-coated silicon carbide layer deposited by atmospheric plasma spraying

被引:6
|
作者
Lin, Geng-Sheng [1 ,2 ]
Liu, Yu-Cheng [1 ,2 ]
Anbarasan, Ramasamy [1 ,2 ]
Nakagawa, Keizo [3 ,4 ]
Yoshioka, Tomohisa [3 ,4 ]
Matsuyama, Hideto [3 ,5 ]
Tseng, Hui-Hsin [6 ]
Tung, Kuo-Lun [1 ,2 ,7 ]
机构
[1] Natl Taiwan Univ, Adv Res Ctr Green Mat Sci & Technol, Taipei 106, Taiwan
[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan
[3] Kobe Univ, Res Ctr Membrane & Film Technol, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501, Japan
[4] Kobe Univ, Grad Sch Sci Technol & Innovat, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501, Japan
[5] Kobe Univ, Dept Chem Sci & Engn, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501, Japan
[6] Chung Shan Med Univ, Dept Occupat Safety & Hlth, Taichung 402, Taiwan
[7] Natl Taiwan Univ, Water Innovat Low Carbon & Environm Sustainabil R, Taipei 106, Taiwan
关键词
Silicon carbide; Atmospheric plasma spraying; Sol-gel method; Additives; HIGH-TEMPERATURE OXIDATION; COATINGS; GENERATION; MEMBRANES; CORROSION; CERAMICS;
D O I
10.1016/j.jtice.2020.04.003
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Atmospheric plasma spraying (APS) of silicon carbide (SiC) is a challenging task due to the severe decomposition behaviour of the SiC. Previous studies, which utilized APS technique, mixed SiC powder with metals and/or metal oxides to prepare SiC coating. None of them sprayed silica gel-coated SiC and examined the characteristics of the coatings. In this work, silica gel-coated SiC, sodium dodecyl sulfate (SDS) enhanced silica gel-coated SiC, and the combination of alumina (Al2O3) and SiC were prepared and then deposited onto a titanium (Ti) plate by APS. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), adhesion and acid resistance test were performed to analyse the characteristics of modified powders and coatings. We found that compared to Commercial-SiC coatings, all the modified SiC coatings not only increase the coating thickness but also enhance the adhesion force between the coating and substrate; furthermore, the SDS-modified sample exhibits good sulfuric acid (H2SO4) resistance. On the other hand, samples containing Al2O3 showed a significant increase in coating thickness and adhesion force, despite a bit lower acid resistance. In sum, we believe that compared to silica-gel coated samples, Al2O3 contained samples are more suitable for industrial application. (C) 2020 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:173 / 181
页数:9
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