| 郑志腾,董澍,徐丹君,蔡健平,伍招冲.基于POF的温度应力加速试验失效机理一致性研究[J].装备环境工程,2016,13(6):104-109. 郑志腾,董澍,徐丹君,蔡健平,伍招冲.Research On Failure Mechanism Consistency of Accelerated Testfor Temperature Stress Based on POF[J].Equipment Environmental Engineering,2016,13(6):104-109. |
| 基于POF的温度应力加速试验失效机理一致性研究 |
| Research On Failure Mechanism Consistency of Accelerated Testfor Temperature Stress Based on POF |
| 投稿时间：2016-03-09 修订日期：2016-11-22 |
| DOI：10.7643/ issn.1672-9242.2016.06.018 |
| 中文关键词: 加速试验 温度 失效物理 失效机理一致性 |
| 英文关键词:accellerated life test temperatue POF failure mechanism consistency |
| 基金项目:“十二五”科工局技术基础科研项目(Z032014B001) |
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| 中文摘要: |
| 目的 通过失效物理手段得到温度加速寿命试验的失效机理突变点,节省试验样本并为加速寿命试验的有效性提供保障。方法 利用电子产品典型失效物理模型,在求解MOSFET器件激活能的基础上确定失效机理突变点,并开展失效物理分析,从微观分析的角度验证失效机理一致性判定方法的理论正确性和工程适用性。结果 MOSFET器件在温度低于240℃时,失效机理没有发生改变；温度高于240℃时,失效机理发生了改变,与前述失效机理不一致。结论 基于失效物理的方法可以确定器件机理发生变化的温度应力点,所需样本量小。 |
| 英文摘要: |
| Objective To save test sample and provide guarantee for the efficiency of accelerated test by obtaining the change point for accelerated life test based on POF. Methods By analyzing failure mechanism consistency model and calculating the activation energy of MOSFET, the change point was obtained. And failure physical analysis was implemented to verify the correctness and applicability of the theory from micro perspective. Results When temperature is at below 240℃, the failure mechanism hasn’t changed. And when the temperature is higher than 240℃，the failure mechanism has changed. Conclusion The study showed that POF method can confirm the change point for temperature stress and the required sample size is small. |
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