The microstructure and phase transformations of copper atom doped ceramic BiNbO₄ synthesized at 950 and 1100°C were studied. According to XPA the samples in compact, pressed form crystallize in the α-BiNbO₄ structure irrespective of the synthesis temperature and in spite of the phase transformation α → β at 1040°C. The substances BiNb_1–xO_4–δ∙xCuO (x ≤ 0.04) are graphite-colored composites with visually expressed grain microstructure. Thermograms of the samples show near 900°C an endo effect associated with the decomposition of the copper (II) oxide and thermal effects due to reconstructive phase transformations of the type α → γ → β in BiNbO₄. It was determined that copper oxide impurity in bismuth orthoniobate ceramic acts as a heat sink, which increases the temperature of the phase transition α → γ on heating of compact samples.

研究了在950和1100℃下合成的掺铜原子的陶瓷BiNbO ₄的微观结构和相变。根据XPA在α-宾波紧凑，压制形式结晶样品₄结构，而不管合成温度的和，尽管相变的α→β在1040℃。物质BiNb _{1- X} ö _4-δ ∙ X的CuO（X ≤0.04）是石墨色复合材料在视觉上表示晶粒显微组织。样品的热谱图显示，在900°C附近，内在效应与氧化铜（II）的分解有关，并且由于BiNbO _4中α→γ→β的重构相变而产生热效应。。可以确定，邻苯二甲酸铋铋陶瓷中的氧化铜杂质起着散热器的作用，当加热致密样品时，这会增加相变α→γ的温度。