A mold material used for titanium-aluminum alloy--calcia

摘要

The effects of binder, additive and sintering temperature on the properties of calcia as a mold material used for titanium-aluminum alloys have been studied. The results showed that the solution of CaCl_2- C_2H_5OH is the best binder for calcia, the additive of CaF_2 not only increases the strength but also the anti- Watering property of calcia; sintering at 900～1000 dge. C is adaptable. The contamination of calcia on titanium- Aluminum alloy castings has been studied, and the experimental results showed that the thickness of contami- Nation is less than 15 μm.