不锈钢表面振动冲击加速渗铝工艺研究

• 作 者: 王德仁 陈亮 何业东
• 机 构: 北京科技大学新材料技术研究院,
• 出 处: 材料热处理学报
• 发表日期: 2012年02期
• 关键词: 渗铝 喷丸加速制备 铝化物涂层 不锈钢表面 抗高温氧化性能 喷丸 试样 涂层厚度 高温氧化 涂层技术

研究了利用喷丸加速制备涂层技术,对1Cr18Ni9Ti不锈钢分别进行600℃×4、6和8 h渗铝处理,研究了1Cr18Ni9Ti试样的单位面积增重、Al涂层厚度、主要元素沿涂层截面的分布;并将不同温度下获得的铝化物涂层与空白试样一起进行了高温氧化测试实验(900℃×100 h)。结果表明,在较低的温度600℃和较短的时间4 h,可以在1Cr18Ni9Ti钢基体上形成35μm厚的铝化物涂层;但抗氧化性能测试结果却表明,振动渗制处理6 h获得的铝化物涂层性能优于处理4 h和8 h的涂层。

The technology of shot peening for preparation of coatings was studied. The 1Cr18Ni9Ti stainless steel was aluminized at 600 ℃ for 4, 6, and 8 h respectively. The weight per unit area of ​​1Cr18Ni9Ti, the thickness of Al coating, Cross-section distribution. The aluminide coatings obtained at different temperatures were also subjected to high-temperature oxidation test (900 ℃ × 100 h) together with blank samples. The results show that 35μm thick aluminide coating can be formed on the 1Cr18Ni9Ti steel substrate at a lower temperature of 600 ℃ and a shorter time of 4 h. However, the results of the anti-oxidation test show that the vibrational osmosis treatment of 6 h The aluminide coating performs better than the coatings treated for 4 h and 8 h.