蒋玉思,肖方明.配合物制备的铱锡氧化物涂层结构与稳定性[J].表面技术,2019,48(12):347-352.
JIANG Yu-si,XIAO Fang-ming.Microstructure and Stability of IrO2-SnO2 Coatings Prepared by Complex[J].Surface Technology,2019,48(12):347-352 |
| 配合物制备的铱锡氧化物涂层结构与稳定性 |
| Microstructure and Stability of IrO2-SnO2 Coatings Prepared by Complex |
| 投稿时间：2019-01-22 修订日期：2019-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.12.042 |
| 中文关键词: 涂层 电极 铱锡氧化物 稳定性 电解 电镀 |
| 英文关键词:coating electrode Ir-Sn oxide stability electrolysis electroplating |
| 基金项目:国家科技支撑计划项目（2015BAB02B03）；广东省科技计划项目（2017A070702012） |
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| 中文摘要: |
| 目的 改善铱锡氧化物涂层的稳定性，提高涂层的使用寿命。方法 采用加成法合成含醋酸根的铱、锡配合物，并应用热氧化分解法制备出铱锡氧化物涂层。借助扫描电镜、电子探针、X射线衍射仪等技术分析铱锡氧化物涂层的表面形貌、表面成分分布和物相结构等表面物性，采用强化电解法考察热氧化温度对铱锡氧化物涂层在含氟酸性溶液中稳定性的影响，并与氯化物制备的铱锡氧化物涂层进行比较研究。结果 热氧化温度显著影响铱锡氧化物涂层的表面形貌、物相组成，在480~520 ℃下制备的氧化物涂层结构较为致密。随氧化温度的增加，铱锡氧化物涂层的稳定性增加，但超过520 ℃时，稳定性降低，520 ℃下制备的氧化物涂层在含20 mg/L F－的1.0 mol/L H2SO4中，强化寿命为520 h。结论 以含醋酸根配体的铱、锡配合物为金属源物质，制备氧化物涂层，可有效改善涂层的微观结构、成分分布，显著提高涂层的稳定性，延长在含微量氟元素酸性溶液中的使用寿命。 |
| 英文摘要: |
| To improve the stability and service life of IrO2-SnO2 coating, the iridium complex and tin complex containing acetate radical were synthesized by addition, and the Ir-Sn oxide coatings were prepared by thermal decomposition method. The surface morphology, composition distribution and phase structure of IrO2-SnO2 coatings were analyzed via scanning electron microscopy, electron microprobe and X-ray diffraction, respectively. The effect of oxidation temperature on stability of IrO2-SnO2 coating prepared by complex in acidic solution containing fluorine was studied through accelerated electrolysis, and comparative study of two coatings prepared by chloride and complex was made. Based on experiments, the thermal oxidation temperature had significant effect on surface morphology and phase composition. The compact coatings were prepared at 480-520 ℃. With the increase of temperature, the stability of IrO2-SnO2 coatings increased, yet it decreased as the temperature was higher than 520 ℃. The accelerated life of oxide coating prepared at 520 ℃ was 520 h in 1.0 mol/L H2SO4 solution containing 20 m/L F-. In a word, IrO2-SnO2 coatings prepared by complex, may effectively improve the microstructure and composition distribution of the coating, remarkably improve the stability of the coating, and prolong the service life of the coating in acidic solution containing trace fluorine elements. |
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