(哈爾濱工業(yè)大學(xué)金屬精密熱加工國防科技重點(diǎn)實(shí)驗(yàn)室，哈爾濱 150001)
摘 要: 借助于X射線衍射、電子探針和掃描電鏡等測試手段，研究了液鈦與氧化鋯陶瓷型殼的相互作用。 結(jié)果表明，界面反應(yīng)一方面基于型殼中的ZrO2分解和Zr，O原子向鈦基體的擴(kuò)散，形成CaZrTi2O7相； 另一方面液鈦也向氧化鋯型殼中擴(kuò)散，形成Ca2Zr5 Ti2O16相。 闡述了液鈦與氧化鋯陶瓷型殼相互作用的雙向擴(kuò)散機(jī)制。指出降低澆注溫度可減弱鈦與 型殼的界面反應(yīng)。
關(guān)鍵字: 鈦 氧化鋯 型殼 相互作用
（School of Materials Science and Engineering,Harbin Institute of Technology£¬Harbin 150001, P. R. China）
Abstract:The metal-mould interactions during casting of titanium in zirconia shell mould has been studied by means of SEM, EPMA and XRD. The results showed that the interface reaction is based on the dilution of the ZrO2 and the diffusion of Zr and O in titanium matrix, and a new CaZrTi2O7 phase is formed in titanium investment casting surface; at the same time, Ti diffuses into the zirconia ceramic mould and forms another new compound Ca2Zr5Ti2O16 . An interface reaction model was founded and it was pointed out that the metal-mould interaction can be weakened by lowering the pouring temperature.
Key words: titanium zirconia shell mould interaction
