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.

碳化硅（SiC）的大气等离子喷涂（APS）由于SiC的严重分解行为而具有挑战性。先前的研究利用APS技术将SiC粉末与金属和/或金属氧化物混合以制备SiC涂层。他们都没有喷涂硅胶涂层的SiC并检查涂层的特性。在这项工作中，硅胶涂层的SiC，十二烷基硫酸钠（SDS）增强了硅胶涂层的SiC和氧化铝（Al ₂ O ₃制备SiC和SiC，然后通过APS将其沉积到钛（Ti）板上。进行了扫描电子显微镜（SEM），能量色散X射线光谱（EDS），X射线衍射（XRD），附着力和耐酸性测试，以分析改性粉末和涂料的特性。我们发现，与商品化SiC涂层相比，所有改性SiC涂层不仅增加了涂层厚度，而且增强了涂层与基材之间的附着力。此外，经SDS改性的样品表现出良好的耐硫酸（H ₂ SO ₄）性能。另一方面，含有Al ₂ O _3的样品尽管耐酸性稍低，但涂层厚度和附着力仍显着增加。总而言之，我们认为与硅胶涂层样品相比，包含Al ₂ O _3的样品更适合工业应用。