Preparation of Sr 2 CeZrO 6 Refractory and Its Interaction with TiAl Alloy

Vacuum induction melting in a refractory crucible is an economical method to produce TiAl-based alloys, aiming to reduce the preparation cost. In this paper, a Sr CeZrO refractory was synthesized by a solid-state reaction method using SrCO , CeO and ZrO as raw materials, and its interaction with TiAl alloy melt was investigated. The results showed that a single-phase Sr CeZrO refractory could be fabricated at 1400 °C for 12 h, and its space group was Pnma with a = 5.9742(3) Å, b = 8.3910(5) Å and c = 5.9069(5) Å. An interaction layer with a 40μm thickness and dense structure could be observed in Sr CeZrO crucible after melting TiAl alloy. Additionally, the interaction mechanism showed that the Sr CeZrO refractory dissolved in the alloy melt, resulting in the generation of Sr Zr O , SrAl O and CeO , which attached to the surface of the crucible.