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在ＢＺＮ系陶瓷中，立方焦绿石结构的α相与低对称结构的β相是２个重要的基本物相．以差热分析（ＤＴＡ）与Ｘ射线衍射（ＸＲＤ）分析为研究手段，明确了α相与β相的熔融物性．结果表明：α相是同成分熔融化合物，熔点１１９０℃；β相是异成分熔融化合物，在１１００℃吸热分解为α相与液相．在自然冷却时，发生转熔过程，α相转入熔融液相中，析出β相，转熔温度１１００℃；在淬火冷却时，液相中析出ＢＺＮ系立方萤石相．
In BZN ceramics, the α phase of cubic pyrochlore structure and the β phase of low symmetry structure are two important basic phases. Differential thermal analysis (DTA) and X-ray diffraction (XRD) analysis were used as the research methods to clarify the melt properties of α and β phases. The results show that the α phase is a melting compound with the same composition, the melting point is 1190 ℃. The β phase is an isothermal melting compound which decomposes into α phase and liquid phase at 1100 ℃. During the natural cooling, the transformation process takes place, the α phase is transferred into the melt phase, the β phase is precipitated and the transformation temperature is 1100 ° C; during the quenching and cooling, the BZN cubic fluorite phase is precipitated in the liquid phase.