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Preparation method and application of double-coating silicon carbide particles
The invention discloses a preparation method and application of double-plating silicon carbide particles, and the preparation method comprises the following steps: carrying out surface roughening treatment on silicon carbide particles, drying to obtain roughened silicon carbide particles, adding a dispersant, carrying out ball milling treatment to obtain uniformly mixed powder, and preparing Ti5Si3/Ti-plated SiC powder particles through a vacuum diffusion plating process; the preparation method comprises the following steps: dissolving basic cupric carbonate into an ammonia water solution, stirring and fully dissolving, adding polyacrylamide, uniformly mixing, adding Ti5Si3/Ti-plated SiC powder particles, sealing and standing to obtain fully-wrapped silicon carbide particles; and carrying out heating reduction treatment on the preliminarily coated silicon carbide powder in a hydrogen reduction atmosphere, cooling and sieving to obtain the double-coating particles. The double-coating Cu-Ti5Si3/Ti-SiC powder particles are provided for the first time, when the silicon carbide particle reinforced aluminum-based composite material is prepared through powder metallurgy hot pressing sintering, the defects of holes, gaps and the like formed in the hot pressing sintering process of the composite material are obviously overcome, and interface bonding is good.
本发明公开了一种双镀层碳化硅颗粒的制备方法及其应用，包括，将碳化硅颗粒进行表面粗化处理，干燥得到粗化处理碳化硅颗粒，加入分散剂，球磨处理得到混合均匀的粉末，通过真空扩散镀覆工艺，制得镀Ti5Si3/Ti的SiC粉体颗粒；将碱式碳酸铜融入氨水溶液中，搅拌并充分溶解，添加聚丙烯酰胺，混合均匀后，加入镀Ti5Si3/Ti的SiC粉体颗粒，密封静止，得到充分包裹的碳化硅颗粒；将初步包覆碳化硅粉体在氢气还原气氛中加热还原处理，冷却过筛后，即得双镀层颗粒。本发明首次提出一种双镀层Cu‑Ti5Si3/Ti‑SiC粉体颗粒，在粉末冶金热压烧结制备碳化硅颗粒增强铝基复合材料时，明显改善复合材料在热压烧结过程中形成的孔洞、缝隙等缺陷，界面结合良好。
Preparation method and application of double-coating silicon carbide particles
The invention discloses a preparation method and application of double-plating silicon carbide particles, and the preparation method comprises the following steps: carrying out surface roughening treatment on silicon carbide particles, drying to obtain roughened silicon carbide particles, adding a dispersant, carrying out ball milling treatment to obtain uniformly mixed powder, and preparing Ti5Si3/Ti-plated SiC powder particles through a vacuum diffusion plating process; the preparation method comprises the following steps: dissolving basic cupric carbonate into an ammonia water solution, stirring and fully dissolving, adding polyacrylamide, uniformly mixing, adding Ti5Si3/Ti-plated SiC powder particles, sealing and standing to obtain fully-wrapped silicon carbide particles; and carrying out heating reduction treatment on the preliminarily coated silicon carbide powder in a hydrogen reduction atmosphere, cooling and sieving to obtain the double-coating particles. The double-coating Cu-Ti5Si3/Ti-SiC powder particles are provided for the first time, when the silicon carbide particle reinforced aluminum-based composite material is prepared through powder metallurgy hot pressing sintering, the defects of holes, gaps and the like formed in the hot pressing sintering process of the composite material are obviously overcome, and interface bonding is good.
本发明公开了一种双镀层碳化硅颗粒的制备方法及其应用，包括，将碳化硅颗粒进行表面粗化处理，干燥得到粗化处理碳化硅颗粒，加入分散剂，球磨处理得到混合均匀的粉末，通过真空扩散镀覆工艺，制得镀Ti5Si3/Ti的SiC粉体颗粒；将碱式碳酸铜融入氨水溶液中，搅拌并充分溶解，添加聚丙烯酰胺，混合均匀后，加入镀Ti5Si3/Ti的SiC粉体颗粒，密封静止，得到充分包裹的碳化硅颗粒；将初步包覆碳化硅粉体在氢气还原气氛中加热还原处理，冷却过筛后，即得双镀层颗粒。本发明首次提出一种双镀层Cu‑Ti5Si3/Ti‑SiC粉体颗粒，在粉末冶金热压烧结制备碳化硅颗粒增强铝基复合材料时，明显改善复合材料在热压烧结过程中形成的孔洞、缝隙等缺陷，界面结合良好。
Preparation method and application of double-coating silicon carbide particles
一种双镀层碳化硅颗粒的制备方法及其应用
REN JUNPENG (author) / WANG YU (author)
2024-04-19
Patent
Electronic Resource
Chinese
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