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The invention provides a preparation technology of a graphene oxide toughened alumina-based ceramic cutter, and relates to the technical field of ceramic cutters. The preparation technology comprisesthe following steps: (1) adding graphene oxide into anhydrous ethanol, and adding polyethylene glycol and alumina powder to obtain a powder slurry I; (2) mixing anhydrous ethanol with polyethylene glycol, and adding beta-SiC nanoparticles, TiC whiskers and a sintering aid to obtain a powder slurry II; (3) performing ball milling to obtain a composite slurry; (4) drying and sieving the composite slurry to obtain a composite powder; (5) carrying out pre-pressing forming; and (6) carrying out vacuum hot-pressing sintering on the obtained pre-pressed green body. The graphene, TiC whiskers and beta-SiC nano-particles have synergistic effects, so the reinforcing and toughening effects are good, the dispersity of all the raw materials in the preparation process is high, and the prepared ceramic cutter has excellent mechanical properties, high toughness and strength and good wear resistance.
本发明提供了一种氧化石墨烯增韧氧化铝基陶瓷刀具的制备工艺，涉及陶瓷刀具技术领域，制备工艺包括以下步骤：(1)氧化石墨烯加入至无水乙醇中，加入聚乙二醇、氧化铝粉体，得粉体浆料I；(2)将无水乙醇与聚乙二醇混合，加入β‑SiC纳米颗粒和TiC晶须、烧结助剂，得粉体浆料II；(3)球磨，得复合浆料；(4)干燥、过筛，得复合粉体；(5)预压成型；(6)将预压成型的坯体进行真空热压烧结。本发明提中石墨烯、TiC晶须、β‑SiC纳米颗粒协同作用，补强增韧效果好，制备过程中各原料分散性高，制备得到的陶瓷刀具的力学性能优异，其韧性、强度高，且耐磨性好。
The invention provides a preparation technology of a graphene oxide toughened alumina-based ceramic cutter, and relates to the technical field of ceramic cutters. The preparation technology comprisesthe following steps: (1) adding graphene oxide into anhydrous ethanol, and adding polyethylene glycol and alumina powder to obtain a powder slurry I; (2) mixing anhydrous ethanol with polyethylene glycol, and adding beta-SiC nanoparticles, TiC whiskers and a sintering aid to obtain a powder slurry II; (3) performing ball milling to obtain a composite slurry; (4) drying and sieving the composite slurry to obtain a composite powder; (5) carrying out pre-pressing forming; and (6) carrying out vacuum hot-pressing sintering on the obtained pre-pressed green body. The graphene, TiC whiskers and beta-SiC nano-particles have synergistic effects, so the reinforcing and toughening effects are good, the dispersity of all the raw materials in the preparation process is high, and the prepared ceramic cutter has excellent mechanical properties, high toughness and strength and good wear resistance.
本发明提供了一种氧化石墨烯增韧氧化铝基陶瓷刀具的制备工艺，涉及陶瓷刀具技术领域，制备工艺包括以下步骤：(1)氧化石墨烯加入至无水乙醇中，加入聚乙二醇、氧化铝粉体，得粉体浆料I；(2)将无水乙醇与聚乙二醇混合，加入β‑SiC纳米颗粒和TiC晶须、烧结助剂，得粉体浆料II；(3)球磨，得复合浆料；(4)干燥、过筛，得复合粉体；(5)预压成型；(6)将预压成型的坯体进行真空热压烧结。本发明提中石墨烯、TiC晶须、β‑SiC纳米颗粒协同作用，补强增韧效果好，制备过程中各原料分散性高，制备得到的陶瓷刀具的力学性能优异，其韧性、强度高，且耐磨性好。
Preparation technology of graphene oxide toughened alumina-based ceramic cutter
一种氧化石墨烯增韧氧化铝基陶瓷刀具的制备工艺
HU HONGWU (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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