• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Corrosion Behavior of 3A21 Aluminum Alloy in Water- Ethylene Glycol Coolant under Simulated Engine Working ConditionsCorrosion Behavior of 3A21 Aluminum Alloy in Water- Ethylene Glycol Coolant under Simulated Engine Working Conditions
【24h】

Corrosion Behavior of 3A21 Aluminum Alloy in Water- Ethylene Glycol Coolant under Simulated Engine Working ConditionsCorrosion Behavior of 3A21 Aluminum Alloy in Water- Ethylene Glycol Coolant under Simulated Engine Working Conditions

机译：3A21铝合金在水 - 乙二醇冷却剂下的耐乙二醇冷却剂在模拟发动机工作条件下水 - 乙二醇冷却剂中的铝合金下腐蚀性腐蚀性腐蚀行为

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, the corrosion behavior of 3A21 aluminum alloy in ethylene glycol coolant was studied under simulated working conditions of automotive engine. The conditions changed alternately between 25°C and 88°C were used to simulate automobile engine usage scenarios. Various methods were used to evaluate polarization resistance, corrosion morphology, element characteristics of corrosion products and corrosion rate. The electrochemical impedance spectroscopy (EIS) demonstrated that polarization resistance first increased and then decreased with the increasing immersion duration at 25°C and 88°C due to the formation of aluminum alloy oxide film and Al-alcohol film. X-ray photoelectron spectroscopy (XPS) confirmed the existence of Al-alcohol film. Energy dispersive spectrometer (EDS) shown that the content ratio between oxygen and aluminum (O/Al) in corrosion products of aluminum alloy surface decreased with increasing concentration of ethylene glycol, while the ratio of C/O increased with the increasing concentration of ethylene glycol. The scanning electron microscope (SEM) results showed that there was pitting corrosion on the surface of 3A21 aluminum alloy. The results of mass loss corrosion experiments indicated that the corrosion rate of 3A21 aluminum alloy in ethylene glycol increased with the increasing of immersion duration and decreased with the increasing concentration of ethylene glycol. Corrosion rate decreased from 0.00512 g·h-1 ·m-2 (in 0% ethylene glycol coolant) to 0.00226 g·h-1 ·m-2 (in 65% ethylene glycol coolant) at 25°C-88°C alternately for 14 days. The mass loss corrosion rate decreased from 0.00908 g·h-1 ·m-2 (in 0% ethylene glycol coolant) to 0.00396 g·h-1 ·m-2 (in 65% ethylene glycol coolant) at 25°C-88°C alternately for 90 days.
机译：在这项工作中，在汽车发动机的模拟工作条件下研究了3A21铝合金在乙二醇冷却剂中的腐蚀行为。使用25°C和88°C之间交替变化的条件来模拟汽车发动机使用情况。各种方法用于评估抗腐蚀性抗腐蚀性，腐蚀形态，腐蚀产物的元素特性和腐蚀速率。电化学阻抗光谱（EIS）证明，由于铝合金氧化膜和Al-醇薄膜的形成，偏振电阻首先增加，然后随着25℃和88℃的增加而降低。 X射线光电子能谱（XPS）证实存在Al-醇薄膜。能量分散光谱仪（EDS）表明，铝合金表面腐蚀产物中氧气和铝（O / Al）之间的含量比随着乙二醇的浓度的增加而降低，而C / O的比例随着乙二醇的浓度的增加而增加。扫描电子显微镜（SEM）结果表明，在3A21铝合金的表面上存在蚀腐蚀。质量损失腐蚀实验的结果表明，乙二醇中的3A21铝合金的腐蚀速率随着浸渍持续时间的增加而增加，随着乙二醇的浓度的增加而降低。腐蚀速率从0.00512g·h-1·m-2（在0％乙二醇冷却剂中）下降至0.00226g·h-1·m-2（在65％乙二醇冷却剂中），交替地在25℃-88℃下14天。质量损失腐蚀速率从0.00908g·h-1·m-2（在0％乙二醇冷却剂中）降低至0.00396g·h-1·m-2（在65％乙二醇冷却剂中），在25°C-88 °C交替持续90天。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号