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In-situ solidification colloidal forming method of high-performance alumina-based composite ceramic
The invention belongs to the technical field of alumina-based composite ceramics, and particularly relates to an in-situ solidification colloidal forming method of high-performance alumina-based composite ceramics. The method comprises the following steps: S1, uniformly mixing 70-90% by mass of alumina powder, 7-21% by mass of zirconia powder, 2.5-8% by mass of silicon carbide powder and 0.5-1% by mass of dispersant raw materials by using deionized water as a ball milling medium; S2, dispersing cerium oxide into the composite ceramic slurry prepared in the step S1; and S3, adding chopped fibers into the cerium oxide toughened composite ceramic slurry obtained in the step S2, then adding a surfactant, and uniformly mixing. According to the invention, zirconium oxide and silicon carbide are added to prepare a composite slurry, and cerium oxide and chopped fibers are added into the composite slurry, so that the thermal shock stability and the thermal shock durability of the aluminum oxide-based composite ceramic material are obviously improved, the toughness and the strength of the composite material are greatly improved, the overall performance is obviously improved, the preparation process is simple , and the industrial production is easy to realize.
本发明属于氧化铝基复合陶瓷技术领域，尤其为一种高性能氧化铝基复合陶瓷的原位凝固胶态成型方法，包括以下步骤：S1、将质量比为70～90％的氧化铝粉、7～21％的氧化锆粉、2.5～8％的碳化硅粉以及0.5～1％的分散剂原料以去离子水为球磨介质混匀；S2、将氧化铈分散至经步骤S1制得的复合陶瓷浆料中；S3、将短切纤维加入到经步骤S2所得的氧化铈增韧复合陶瓷浆料中，再加入表面活性剂，混匀。本发明通过添加氧化锆、碳化硅制备复合浆料，并在复合浆料中添加氧化铈和短切纤维，明显改善了氧化铝基复合陶瓷材料的热震稳定性及热震耐久性，使复合材料的韧性及强度得到大幅提高，整体性能提升显著，且制作工艺简单，易于实现工业化生产。
In-situ solidification colloidal forming method of high-performance alumina-based composite ceramic
The invention belongs to the technical field of alumina-based composite ceramics, and particularly relates to an in-situ solidification colloidal forming method of high-performance alumina-based composite ceramics. The method comprises the following steps: S1, uniformly mixing 70-90% by mass of alumina powder, 7-21% by mass of zirconia powder, 2.5-8% by mass of silicon carbide powder and 0.5-1% by mass of dispersant raw materials by using deionized water as a ball milling medium; S2, dispersing cerium oxide into the composite ceramic slurry prepared in the step S1; and S3, adding chopped fibers into the cerium oxide toughened composite ceramic slurry obtained in the step S2, then adding a surfactant, and uniformly mixing. According to the invention, zirconium oxide and silicon carbide are added to prepare a composite slurry, and cerium oxide and chopped fibers are added into the composite slurry, so that the thermal shock stability and the thermal shock durability of the aluminum oxide-based composite ceramic material are obviously improved, the toughness and the strength of the composite material are greatly improved, the overall performance is obviously improved, the preparation process is simple , and the industrial production is easy to realize.
本发明属于氧化铝基复合陶瓷技术领域，尤其为一种高性能氧化铝基复合陶瓷的原位凝固胶态成型方法，包括以下步骤：S1、将质量比为70～90％的氧化铝粉、7～21％的氧化锆粉、2.5～8％的碳化硅粉以及0.5～1％的分散剂原料以去离子水为球磨介质混匀；S2、将氧化铈分散至经步骤S1制得的复合陶瓷浆料中；S3、将短切纤维加入到经步骤S2所得的氧化铈增韧复合陶瓷浆料中，再加入表面活性剂，混匀。本发明通过添加氧化锆、碳化硅制备复合浆料，并在复合浆料中添加氧化铈和短切纤维，明显改善了氧化铝基复合陶瓷材料的热震稳定性及热震耐久性，使复合材料的韧性及强度得到大幅提高，整体性能提升显著，且制作工艺简单，易于实现工业化生产。
In-situ solidification colloidal forming method of high-performance alumina-based composite ceramic
一种高性能氧化铝基复合陶瓷的原位凝固胶态成型方法
ZHANG QIWEI (author)
2021-10-19
Patent
Electronic Resource
Chinese
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