| K52合金及其涂层的涂盐热腐蚀行为 |
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| 引用本文： | 田秀娟.K52合金及其涂层的涂盐热腐蚀行为[J].材料开发与应用,2007,22(5):16-19. |
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| 作者姓名： | 田秀娟 |
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| 作者单位： | 山东科技大学材料科学与工程学院,山东,青岛,266510 |
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| 摘 要： | 研究了合金及其涂层的热腐蚀行为,测定了它们的氧化动力学曲线。用扫描电镜和电子探针观察了合金及涂层腐蚀后的表面形貌和横截面显微组织。结果表明:溅射K52纳米晶涂层在含有NaCl的盐中腐蚀10 h,氧化膜就大面积剥落,涂层遭受很大的破坏。而铸态合金腐蚀50 h后,产生已基本连续的内氧化铝层,这层氧化铝对阻止O、S和Cl的进入起到一定的作用,提高了合金的抗氯盐腐蚀。
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| 关 键 词： | 热腐蚀 溅射纳米晶 涂层 |
| 文章编号： | 1003-1545（2007）05-0016-04 |
| 修稿时间： | 2007-04-09 |
Hot Corrosion Behavior of Cast K52 Alloy and Its Sputtered Coating |
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| TIAN Xiu-juan.Hot Corrosion Behavior of Cast K52 Alloy and Its Sputtered Coating[J].Development and Application of Materials,2007,22(5):16-19. |
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| Authors: | TIAN Xiu-juan |
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| Affiliation: | College of Material Science and Eng. , SUST, Qingdao 266510, China |
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| Abstract: | Hot corrosion resistance of cast alloy K52 and its coating specimens were studied.The oxidation kinetics of the alloys was measured.Scan electron microscopy(SEM)was used to exam the surface morphology and cross-section views of the eroded specimens,and the electro-probe were also adopted to characterize the compositions of corrosion products and distribution of elements on the cross-section.The results indicated that the nanocrystalline coating was destroyed with pre-deposits of 75%Na2SO4+25%NaCl for 10h.A continuous inner scale of Al2O3 formed on the cast alloy after hot corrosion for 50h.The scale inhibits O,S and Cl entering into alloy. |
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| Keywords: | Hot corrosion Sputtered nanocrystalline Coating |
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