采用固相法制备了掺杂Ca和Li的LaCrO3试样, 并研究了其稳定性及热膨胀. 结果表明,掺Li量为0.05 mol时会对LaCrO3低温相变处的热膨胀性能产生影响, 变化幅度大于80%;掺Li量超过0.10mol时热膨胀系数及热膨胀率变大, 但波动幅度减小, 小于25%. 无论是否添加Ca元素, 掺Li量大于0.15mol都会使材料发生粉化失效现象.
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