微观结构,硬度和高温腐蚀行为在含硫的环境中激光层 Y2O3/IN625复合涂层
Yong Li1, Hao Zheng2, Zhe Chang1
1Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710049, China.
Materials (Basel, Switzerland)
|October 16, 2024
概括
将氧化物 (Y2O3) 添加到Inconel 625 (IN625) 涂层中,可以显著提高高温耐腐蚀性. 这种激光覆盖的复合材料涂层为水冷壁管提供了增强的耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 表面工程是什么?表面工程是什么?
背景情况:
- 工业应用中的水冷壁管面临严重的高温腐蚀.
- 激光覆盖提供了一种应用保护涂层的方法.
- 提高耐腐蚀性对于延长部件寿命和经济效益至关重要.
研究的目的:
- 研究氧化物 (Y2O3) 添加在Inconel 625 (IN625) 复合涂料上的影响.
- 评估对微观结构,硬度和高温耐腐蚀性的影响.
- 为了确定Y2O3/IN625涂料在工业应用中的潜力.
主要方法:
- 使用高速激光覆盖来制备Y2O3/IN625复合涂料.
- 进行微观结构分析以观察变化.
- 进行硬度测试以量化机械性能.
- 进行了高温腐蚀试验以评估性能.
主要成果:
- 添加Y2O3以最小的相变改进了IN625的微观结构.
- 涂层硬度增加了约7.7%,达到300HV.
- 添加Y2O3的涂层表现出优越的高温耐腐蚀性.
- 与单独使用IN625相比,腐蚀质量增加减少了约36.6%.
结论:
- 氧化物有效地增强了Inconel 625涂料的性能.
- 精致的微观结构和形成富含Cr的氧化物层有助于提高耐腐蚀性.
- Y2O3/IN625复合涂料在保护水冷墙管免受高温腐蚀方面显示出显著的前景.
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