ZrO_2氧气传感器加热电极漂移分析及改进研究

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英文篇名：Research on drift analysis and improvement of heating electrode of ZrO_2 oxygen sensor 作者：范树新 ; 刘智敏 ; 郑伟 ; 周明军 英文作者：FAN Shuxin;LIU Zhimin;ZHENG Wei;ZHOU Mingjun;The 49th Research Institute of China Electronics Technology Group Corporation; 关键词：氧气传感器 ; 加热电极 ; 漂移 英文关键词：oxygen sensor;;heating electrode;;drift 中文刊名：CGQJ 英文刊名：Transducer and Microsystem Technologies 机构：中国电子科技集团公司第四十九研究所; 出版日期：2019-06-26 10:06 出版单位：传感器与微系统 年：2019 期：v.38;No.329 语种：中文; 页：CGQJ201907015 页数：3 CN：07 ISSN：23-1537/TN 分类号：56-58

摘要

针对实际应用中出现的传感器加热电极漂移进行分析,其机理印刷烧结的加热电极,内部存在应力,晶体缺陷,颗粒共熔体等不稳定因素,处于热力学不稳定状态。针对失效机理提出了加热电极过载工作温度老化措施及改进了加热电路,并通过试验验证了措施有效性。8只试验样品通过过载试验,剔除2只不稳定产品,6只样品进入相对稳定期;采用改进后加热电路,6只样品连续通电4个月后,输出稳定。试验结果表明:加热电极过载老化及改进加热电路措施有效,可减少加热电极漂移问题。
        Drift of sensor heating electrode in practical application is analyzed. The mechanism of the drift is that there are unstable factors such as stress,crystal defect and particle eutectic in the printed and sintered heating electrode,which is in a thermodynamic unstable state. Aiming at the failure mechanism,the aging measures of overload working temperature of heating electrode and the improvement of heating circuit are put forward,and the effectiveness of the measure is verified by experiments. After overload test on 8 test samples,2 unstable products are eliminated and 6 samples entered a relatively stable period. The improved heating circuit is used,the outputs of 6 samples are stable after 4 months of continuous electrification. The experimental results show that the over-load aging of heating electrodes and the improvement of heating circuit are effective,which can reduce the drift of heating electrodes.

引文

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