|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Rare Metal Extraction & Processing
||Effect of CaO Additive on the Interfacial Reaction between the BaZrO3 Refractory and Titanium Enrichment Melt
||Guangyao Chen, Juyun Kang, Pengyue Gao, Wajid Ali, Ziwei Qin, Xionggang Lu, Chonghe Li
|On-Site Speaker (Planned)
The BaZrO3 and CaO-doped BaZrO3 ceramics were fabricated at 1750°C for melting the Ti3Ni alloys, respectively. Employing XRD, OM and SEM, the influence of CaO on the composition of BaZrO3 and the interaction between the BaZrO3 ceramic and titanium alloy was investigated. The results showed that the CaO doped BaZrO3 was consisted of CaO and Ba1-xCaxZrO3. The grain on the surface of BaZrO3 ceramic was loose after melting, and the thermodynamic analysis indicated that the dissolution-erosion was responsible for the interaction mechanism. An amount of BaZrO3 refractory was attached to the Ti2Ni alloy bottom after the alloy was cooled, however, no refractory was found on the bottom of Ti2Ni alloy, which was cooled down on the CaO doped BaZrO3 ceramic. CaO additive can effectively reduce the interaction between the BaZrO3 refractory and the titanium melt, indicating that it was a very promising refractory for preparing the titanium alloy.