【摘要】 描述了退火工艺对氧化锌压敏电阻器电气性能的影响。样品热处理后晶粒界层中的富铋相发生了由β－Ｂｉ２Ｏ３向γ－Ｂｉ２Ｏ３的相变。用点缺陷理论的准化学反应分析了消除间隙锌离子的过程。试验和理论分析都说明经过处理后，虽然某些参数下降，但其稳定性大大提高。适当地选取退火的温度和时间，可使参数的下降较小并在允许的范围内，从而制得性能符合要求、稳定性较好的产品。更多还原

【Abstract】 The effect of annealing on the electrical performances of varistor is described The rich Bi 2O 3 phase transformation from β Bi 2O 3 to γ Bi 2O 3 occurred in the grain boundary after annealing The process of removing ion of interstitial zinc is analysed with the aid of point defect theory and quasi chemical reaction It is shown that the stability of varistor has been improved,though some electrical performances degenerate By choosing annealing temperature and time,the degeneration of performances can be reduced and limited in the allowable range,the required products with improved stability have been obtained更多还原