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| 锂-亚电池绝缘子高温氧化行为及酸洗工艺研究 |
| Oxidation Behavior and Pickling Technology of Insulator for Lithium Battery at High Temperature |
| Received:November 15, 2019 Revised:January 10, 2020 |
| DOI：10.3969/j.issn.1674-6457.2020.01.023 |
| 中文关键词: 绝缘子 高温氧化皮 化学酸洗 机械抛光 |
| 英文关键词: insulator high temperature oxidation skin chemical pickling mechanical polishing |
| 基金项目:陕西省工业科技攻关项目（2016GY-223） |
| Author Name | Affiliation | | REN Li-na | 1. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
2. Western Titanium Technologies Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi'an 710200, China
3. Xi'an Taijin Industrial Electrochemical Technology Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi'an 710200, China | | NIU Jing | 1. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China | | ZHANG Jian-xun | 1. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China |
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| 中文摘要: |
| 目的 针对锂亚硫酰氯电池绝缘子表面生成的灰黑色氧化皮结构致密、相组成复杂，与基体附着力极强，且与玻璃浸润紧密连接的特点，研究一种酸洗工艺以有效清洁绝缘子的高温氧化皮且不影响玻璃-封接气密性。方法 利用SEM和X-ray等方法对其盖板和芯柱的高温氧化皮进行了测试和分析，采用“化学酸洗、钝化处理”与“超声清洗、机械抛光”相结合的方法进行实验。结果 盖板（304不锈钢）表面生成了NiO2, CrO3, FeO•Cr2O3, FeO•Cr2O•3Fe2O3等致密型氧化物；芯柱（4J28可伐合金）表面则生成了Fe-Cr固溶体、Cr2N、FeCr2O4、Cr23C6等氧化产物。结论 成功实现了利用同一种混合酸液将两种不同状态和成分的氧化皮同时快速清除。 |
| 英文摘要: |
| The paper aims to research a pickling process to effectively clean the high temperature oxidation skin of the insulator without affecting the glass-seal air tightness based on characteristics such as compact structure, complex phase composition, strong adhesion with the substrate and close connection with glass soakage of ash black oxidation skin on the lithium thionyl chloride battery insulator. The high temperature oxidation skin of its cover plate and core column was tested and analyzed through SEM and X-ray. Methods such as chemical picking, passivating treatment, ultrasonic cleaning and mechanical polishing were combined for testing. The results showed that NiO2, CrO3, FeO•Cr2O3, FeO•Cr2O•3Fe2O3 and other dense oxides occurred on the surface of the cover plate (304 stainless steel); Fe-Cr solid solution and other types of oxides, such as Cr2N, FeCr2O4 and Cr23C6 occurred on the surface of the core column (4J28 kovar alloy). Oxidation skin of two different states and components can be successfully cleaned with the same acid liquor. |
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