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Micro-nano silicon carbide/calcium oxide stabilized zirconia spherical feed and preparation method thereof
The invention relates to a micro-nano silicon carbide/calcium oxide stabilized zirconia spherical feed and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a ZrOCl2.8H2O/Ca(NO3)2.4H2O mixed solution; step 2, adding excessive ammonia water into the mixed solution, and continuously stirring to generate white precipitate, so as to form a solution A; step 3, dissolving polycarbosilane in a p-xylene solution to form a solution B; step 4, adding the solution B and a PVA aqueous solution into the solution A to obtain a mixture; step 5, performing ball milling on the mixture in the step 4 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; 7, putting spherical powder obtained after granulation into a corundum crucible, putting the corundum crucible into a vacuum sintering furnace to be calcined under the high-temperature condition, and Zr(OH)4, Ca(OH)2 and polycarbosilane (PCS) are subjected to high-temperature decomposition to form uniform SiC/CSZ spherical feed.
本发明一种微纳米碳化硅/氧化钙稳定氧化锆球形喂料及制备方法，包括：步骤1，配置ZrOCl2·8H2O/Ca(NO3)2·4H2O混合溶液；步骤2，将过量氨水滴加于混合溶液并持续搅拌生成白色沉淀，形成溶液A；步骤3，将聚碳硅烷溶于对二甲苯溶液中，形成溶液B；步骤4，将溶液B和PVA水溶液加入到溶液A，得到混合物；步骤5，将步骤4中的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粉体放在刚玉坩埚中，并置于真空烧结炉中在高温条件下煅烧，使Zr(OH)4、Ca(OH)2和聚碳硅烷(PCS)经过高温分解形成均匀的SiC/CSZ球形喂料。
Micro-nano silicon carbide/calcium oxide stabilized zirconia spherical feed and preparation method thereof
The invention relates to a micro-nano silicon carbide/calcium oxide stabilized zirconia spherical feed and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a ZrOCl2.8H2O/Ca(NO3)2.4H2O mixed solution; step 2, adding excessive ammonia water into the mixed solution, and continuously stirring to generate white precipitate, so as to form a solution A; step 3, dissolving polycarbosilane in a p-xylene solution to form a solution B; step 4, adding the solution B and a PVA aqueous solution into the solution A to obtain a mixture; step 5, performing ball milling on the mixture in the step 4 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; 7, putting spherical powder obtained after granulation into a corundum crucible, putting the corundum crucible into a vacuum sintering furnace to be calcined under the high-temperature condition, and Zr(OH)4, Ca(OH)2 and polycarbosilane (PCS) are subjected to high-temperature decomposition to form uniform SiC/CSZ spherical feed.
本发明一种微纳米碳化硅/氧化钙稳定氧化锆球形喂料及制备方法，包括：步骤1，配置ZrOCl2·8H2O/Ca(NO3)2·4H2O混合溶液；步骤2，将过量氨水滴加于混合溶液并持续搅拌生成白色沉淀，形成溶液A；步骤3，将聚碳硅烷溶于对二甲苯溶液中，形成溶液B；步骤4，将溶液B和PVA水溶液加入到溶液A，得到混合物；步骤5，将步骤4中的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粉体放在刚玉坩埚中，并置于真空烧结炉中在高温条件下煅烧，使Zr(OH)4、Ca(OH)2和聚碳硅烷(PCS)经过高温分解形成均匀的SiC/CSZ球形喂料。
Micro-nano silicon carbide/calcium oxide stabilized zirconia spherical feed and preparation method thereof
一种微纳米碳化硅/氧化钙稳定氧化锆球形喂料及制备方法
YANG ZHEYI (author) / CUI JINWEN (author) / WANG HONGZHE (author) / CUI XIONGHUA (author) / ZHANG LEI (author) / CAO HAITAO (author)
2021-08-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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