Aluminum titanate ceramic for casting and preparation method thereof

The invention relates to an aluminum titanate ceramic for casting and a preparation method thereof, alpha-Al2O3 and titanium yellow powder are used as raw materials, magnesium carbonate and silicon dioxide are added as stabilizers, the components of the raw materials are as follows: 53-59 wt% of alpha-Al2O3, 37.58-42.72 wt% of titanium yellow powder and 3-6 wt% of the total amount of the stabilizers, and the raw materials are subjected to wet ball milling mixing, granulation, isostatic cool pressing and firing to obtain the aluminum titanate ceramic. The aluminum titanate material is directlyprepared by adopting a one-step method so that the preparation process is simplified, the production cost is greatly saved, the economic benefit is good, and meanwhile, the prepared material is high in mechanical strength and low in thermal expansion coefficient, and can be used for preparing products such as riser tubes and crucibles for casting. 本发明涉及一种铸造用钛酸铝陶瓷及其制备方法，以α-Al2O3和钛黄粉为原料，加入碳酸镁和二氧化硅作为稳定剂，各原料组分为：α-Al2O353％～59％