• 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 >Influence of Heat Treatment on Corrosion of Mild Steel Coated with WC-Co-Al2O3 Cermet Composite Produced by Electrospark Deposition
【24h】

Influence of Heat Treatment on Corrosion of Mild Steel Coated with WC-Co-Al2O3 Cermet Composite Produced by Electrospark Deposition

机译：热处理对电火花沉积WC-Co-Al- 2 O 3 金属陶瓷复合涂层低碳钢腐蚀的影响

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

摘要

The effect of heat treatment on corrosion of C45 mild steel coated with WC-Co-Al 2 O 3 cermetcomposite were examined. The cermet coatings (CC) were produced by electrospark deposition (ESD)technology. The content of aluminum oxide (Al 2 O 3 ) was changed between 5 and 15 wt.%. Thescanning electron microscope (SEM) was employed for the observation the surface of materials. Thestructure of coatings were depended from the composition of electrospark electrodes. A metallurgicalbonding between the coating and substrate was obtained. Thermogravimetric measurements showed asignificant effect of Al 2 O 3 content on the increase of resistance to chemical corrosion of the substrate.Additionally, heat treatment of the tested coatings were made for a temperature of 400 or 800 0 C. Heattreatment at 4000 C of WC-Co-Al 2 O 3 cermet coatings does not affect the structure of the testedcoatings. On the other hand, after heat treatment at 800 0 C of WC-Co-Al 2 O 3 coatings lose their anti-corrosive properties. Therefore, the chemical corrosion rate of C45 mild steel coated with WC-5Co-15Al 2 O 3 coating increases more than four times compared to the material of the same specimen treatedat 400 0 C.
机译：考察了热处理对涂覆WC-Co-Al 2 O 3金属陶瓷复合材料的C45低碳钢腐蚀的影响。金属陶瓷涂层（CC）是通过电火花沉积（ESD）技术生产的。氧化铝（Al 2 O 3）的含量在5至15重量％之间变化。用扫描电子显微镜（SEM）观察材料的表面。涂层的结构取决于电火花电极的组成。获得了涂层和基底之间的冶金结合。热重分析表明，Al 2 O 3的含量对基材耐化学腐蚀性能的提高具有显着影响。此外，对被测涂层进行了400或800 0 C的热处理。在4,000 C的温度下进行了WC- Co-Al 2 O 3金属陶瓷涂层不影响测试涂层的结构。另一方面，在800 0 C下热处理后，WC-Co-Al 2 O 3涂层失去了防腐蚀性能。因此，与在400 0 C下处理的相同试样的材料相比，涂有WC-5Co-15Al 2 O 3涂层的C45低碳钢的化学腐蚀速率提高了四倍以上。

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