利用高速电弧喷涂技术制备FeCrBSiMnNbY系非晶纳米晶涂层.采用扫描电镜、透射电镜和X射线衍射仪等对涂层的组织结构进行表征,着重分析非晶纳米晶的形成机制,并对涂层的高温耐冲蚀性能进行研究.结果表明:涂层的组织主要由非晶相和α(Fe,Cr)相纳米晶组成;其结构致密,组织均匀,孔隙率低,为1.7%;非晶纳米晶涂层具有良好的耐高温冲蚀性能,攻角增加,涂层冲蚀率随之增加;冲蚀温度升高,涂层耐冲蚀性能也随着提高.
FeCrBSiMnNbY amorphous/nanocrystalline coatings were fabricated by high velocity arc spraying processing. The microstructure of the coating was characterized by SEM, TEM and XRD. The formation mechanism of amorphous/nanocrystalline was discussed. The elevated temperature erosion behavior of the coating was also investigated. The results show that the microstructure of the coating consists of amorphous phase and α (Fe,Cr) nanocrystalline. The coating is dense and homogeneous with low porosity of 1.7%. The coating has excellent elevated temperature erosion resistance. With the impingement angles increasing, the erosion rate of the coating increases. With the erosion temperature increasing, the erosion resistance increases, too.
参考文献
| [1] | Schuh CA;Hufnagel TC;Ramamurty U .Overview No.144 - Mechanical behavior of amorphous alloys[J].Acta materialia,2007(12):4067-4109. |
| [2] | 樊自拴;孙冬柏;俞宏英 et al.[J].北京科技大学学报,2005,27(05):582. |
| [3] | Wu Y;Lin P;Xie G et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2006,430:34. |
| [4] | 郭金花,陆曹卫,倪晓俊,吴嘉伟,卢志超,连法增.电弧喷涂Fe基非晶硬质涂层的组织及性能研究[J].中国表面工程,2006(05):45-48. |
| [5] | 傅斌友,贺定勇,蒋建敏,李晓延.电弧喷涂含非晶相铁基涂层的研究[J].材料热处理学报,2008(03):159-162. |
| [6] | Verdon C.;Martin JL.;Karimi A. .A study of high velocity oxy-fuel thermally sprayed tungsten carbide based coatings. Part 1: Microstructures[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):11-24. |
| [7] | Nerbery A P;Grant P S;Neiser R A .[J].Surface and Coatings Technology,2005,195:91. |
| [8] | Liu D;Gao W;Li Z et al.[J].Materials Letters,2007,61:165. |
| [9] | de Boer F R;Boom R;Mattens W C M.Cohesion in Metals Transition Metal Alloys[M].Netherlands:Elsevier Science Publishing Company Inc,1989:217. |
| [10] | 胡杰,肖于德,黎文献,马正青.快速凝固AlNiCuNd金属玻璃在纳米尺度上的初始晶化行为[J].中南大学学报（自然科学版）,2004(06):925-930. |
| [11] | 刘家浚.材料磨损原理及其耐磨性[M].Beijing:Tsing-hua University Press,1993:176. |
| [12] | 徐维普 .高速电弧喷涂Fe-Al/Cr<,3>C<,2>复合涂层高温性能研究及应用[D].上海交通大学,2005. |
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