CALCIUM OXIDE-BASED CERAMIC CORE AND PREPARATION METHOD THEREOF

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Disclosed are a calcium oxide-based ceramic core and a preparation method thereof, belonging to the technical field of precision casting of titanium alloy. The preparation method comprises : firstly preparing rare-earth-oxide-coated calcium oxide powder; secondly modeling and sintering the rare-earth-oxide-coated calcium oxide powder; and finally obtaining the calcium oxide-based ceramic core, wherein the calcium oxide-based ceramic core is prepared from the following raw materials in percentage by weight : 5-15% of plasticizer, 0.001-20% of mineralizer, and the balance of rare-earth-oxide-coated calcium oxide powder, and the sum of the raw materials is 100% in percentage by weight. The calcium oxide-based ceramic core prepared by the method has excellent mechanical properties and can effectively overcome the defect that calcium oxide is easy to hydrate when meeting water.