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Silicon carbide-calcium oxide stabilized zirconia composite thermal barrier coating and preparation method thereof
The invention relates to a silicon carbide-calcium oxide stabilized zirconia composite thermal barrier coating and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a ZrOCl2.8H2O/Ca(NO3)2.4H2O mixed solution A; step 2, dropwise adding excessive ammonia water into the mixed solution A, and continuously stirring to generate white precipitate; step 3, dissolving polycarbosilane in a p-xylene solution to obtain a solution B; step 4, adding the solution B and a PVA aqueous solution into the mixed solution A to obtain a mixture; step 5, performing ball milling on the mixture in a roller ball mill to obtain ball-milled slurry; step 6, granulating the slurry subjected to ball milling on a spray granulator, and removing moisture to obtain dried spherical mixed powder of Zr(OH)4, Ca(OH)2 and polycarbosilane; and 7, placing spherical mixed powder obtained after granulation in a powder feeder, conducting thermal spraying on the surface of a metal substrate in a vacuum plasma spraying mode, and Zr(OH)4, Ca(OH)2 and polycarbosilane being subjected to high-temperature decomposition under the high-temperature flame condition to form the SiC-CSZ composite wear-resistant thermal barrier coating with high compactness and high wear resistance.
本发明一种碳化硅‑氧化钙稳定氧化锆复合热障涂层及制备方法，包括：步骤1，配置ZrOCl2·8H2O/Ca(NO3)2·4H2O混合溶液A；步骤2，将过量氨水滴加于混合溶液A并持续搅拌生成白色沉淀；步骤3，将聚碳硅烷溶于对二甲苯溶液中，得到溶液B；步骤4，将溶液B和PVA水溶液加入到混合溶液A，得到混合物；步骤5，将混合物于辊式球磨机进行球磨，得到球磨后的浆料；步骤6，将经过球磨的浆料在喷雾造粒机上进行造粒，去除水分后得到干燥的Zr(OH)4、Ca(OH)2和聚碳硅烷的球状混合粉体；步骤7，将造粒后得到的球状混合粉体置于送粉器中，通过真空等离子喷涂的方式在金属基板表面进行热喷涂，在高温火焰条件下Zr(OH)4、Ca(OH)2和聚碳硅烷经过高温分解形成高致密高耐磨、高致密SiC‑CSZ复合耐磨热障涂层。
Silicon carbide-calcium oxide stabilized zirconia composite thermal barrier coating and preparation method thereof
The invention relates to a silicon carbide-calcium oxide stabilized zirconia composite thermal barrier coating and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a ZrOCl2.8H2O/Ca(NO3)2.4H2O mixed solution A; step 2, dropwise adding excessive ammonia water into the mixed solution A, and continuously stirring to generate white precipitate; step 3, dissolving polycarbosilane in a p-xylene solution to obtain a solution B; step 4, adding the solution B and a PVA aqueous solution into the mixed solution A to obtain a mixture; step 5, performing ball milling on the mixture in a roller ball mill to obtain ball-milled slurry; step 6, granulating the slurry subjected to ball milling on a spray granulator, and removing moisture to obtain dried spherical mixed powder of Zr(OH)4, Ca(OH)2 and polycarbosilane; and 7, placing spherical mixed powder obtained after granulation in a powder feeder, conducting thermal spraying on the surface of a metal substrate in a vacuum plasma spraying mode, and Zr(OH)4, Ca(OH)2 and polycarbosilane being subjected to high-temperature decomposition under the high-temperature flame condition to form the SiC-CSZ composite wear-resistant thermal barrier coating with high compactness and high wear resistance.
本发明一种碳化硅‑氧化钙稳定氧化锆复合热障涂层及制备方法，包括：步骤1，配置ZrOCl2·8H2O/Ca(NO3)2·4H2O混合溶液A；步骤2，将过量氨水滴加于混合溶液A并持续搅拌生成白色沉淀；步骤3，将聚碳硅烷溶于对二甲苯溶液中，得到溶液B；步骤4，将溶液B和PVA水溶液加入到混合溶液A，得到混合物；步骤5，将混合物于辊式球磨机进行球磨，得到球磨后的浆料；步骤6，将经过球磨的浆料在喷雾造粒机上进行造粒，去除水分后得到干燥的Zr(OH)4、Ca(OH)2和聚碳硅烷的球状混合粉体；步骤7，将造粒后得到的球状混合粉体置于送粉器中，通过真空等离子喷涂的方式在金属基板表面进行热喷涂，在高温火焰条件下Zr(OH)4、Ca(OH)2和聚碳硅烷经过高温分解形成高致密高耐磨、高致密SiC‑CSZ复合耐磨热障涂层。
Silicon carbide-calcium oxide stabilized zirconia composite thermal barrier coating and preparation method thereof
一种碳化硅-氧化钙稳定氧化锆复合热障涂层及制备方法
CUI XIONGHUA (author) / ZHANG LEI (author) / CAO HAITAO (author) / YANG ZHEYI (author) / CUI JINWEN (author) / WANG HONGZHE (author)
2021-08-10
Patent
Electronic Resource
Chinese
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