Influence of Nano-Al2O3 Sealing on Corrosion Resistance of3Cr13Coatings Prepared by Arc Spraying
摘 要
采用电弧喷涂技术在Q235钢基体上制备了约150μm 厚的3Cr13涂层,并采用3种添加不同含量的纳米 Al2O3异丙醇溶液的有机硅树脂对其进行封孔处理,利用光学显微镜(OM)、扫描电镜(SEM)和X射线衍射仪(XRD)对涂层的微观组织和物相组成进行分析,采用全浸泡腐蚀、乙酸盐雾腐蚀以及电化学腐蚀试验研究了未封孔及封孔涂层的耐腐蚀性能。结果表明:3Cr13涂层的物相组成主要为α-Fe(Cr)和Cr2O3,涂层为典型的层状堆积结构,孔隙率约为11%;涂层封孔后的耐腐蚀性能明显优于未封孔涂层的,而且添加质量分数为6%的纳米 Al2O3异丙醇溶液的有机硅封孔剂对3Cr13涂层耐腐蚀性能的提高最为显著。
Abstract
3Cr13coatings were fabricated on Q235steel substrate with thickness of about 150μm by arcspraying,and then the coatings were sealed by three different sealing reagents which were silicone resins withdifferent contents of nano-Al2O3isopropanol.The morphologies and phases of the coatings were analyzed by opticalmicroscopy(OM),scanning electron microscopy(SEM)and X-ray diffractionmeter(XRD).The corrosion resistanceof the coatings was evaluated by full immersion corrosion test,acetic acid salt spray corrosion test andelectrochemical corrosion test.The results show that the main phases of the 3Cr13coating wereα-Fe(Cr)andCr2O3,and the coating was typical layered accumulation structure with porosity of 11%.The corrosion resistance ofthe sealed-coatings was obviously better than that of the unsealed-coating.Moreover,sealing reagent of siliconeresin added 6% nano-Al2O3isopropanol improved the corrosion resistance of the coatings most significantly.
中图分类号 TG174.44
所属栏目 试验与研究
基金项目
收稿日期 2013/4/13
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备注高文文(1986-),男,硕士研究生。
引用该论文: GAO Wen-wen,WU Yu-ping,DU Hai-qing,HONG Sheng,WANG Bo. Influence of Nano-Al2O3 Sealing on Corrosion Resistance of3Cr13Coatings Prepared by Arc Spraying[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2013, 49(12): 785~789
高文文,吴玉萍,杜海清,洪晟,王博. 纳米Al2O3封孔对电弧喷涂3Cr13涂层耐腐蚀性能的影响[J]. 理化检验-物理分册, 2013, 49(12): 785~789
被引情况:
【1】钱玲,吴玉萍,沈伟,郭稷,郭文敏,陈丽艳, "高速电弧喷涂FeNiCrTiB/Cr3C2涂层的组织结构及其高温氧化行为",理化检验-物理分册 50, 334-337(2014)
【2】陈丽艳,吴玉萍,郭文敏,秦玉娇,张建峰,洪晟, "高速电弧喷涂Ni-50Cr合金涂层的抗高温氧化性能",理化检验-物理分册 51, 251-255(2015)
【3】贾元伟, "H13钢表面电火花沉积Deloro 50合金层的组织和性能",理化检验-物理分册 50, 723-726(2014)
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参考文献
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【2】华绍春,王汉功,汪刘应,等.热喷涂技术的研究进展[J]. 金属热处理,2008,33(5):82-87.
【3】徐维谱,徐滨士,张伟,等.高速电弧喷涂Fe-Al/Cr3C2复合涂层的冲蚀特性[J]. 金属热处理,2005,30(2):1-4.
【4】宫文彪,陈光,刘威.电弧喷涂Cr3C2增强Fe-Al涂层的组织与性能[J]. 材料热处理学报,2007,28(6):139-142.
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【6】李明杰,杨开远.氧乙炔喷涂在电机端盖修复上的应用[J]. 中国表面工程,1994(4):36-37.
【7】MASAHIRO F.The current status of thermal spray-ing in Asia[J]. Journal of Thermal Spray Technolo-gy,2008,17(1):6-9.
【8】秦颢.高硬度耐磨电弧喷涂管状丝材的研究[J]. 机械工程材料,2003,27(4):41-43.
【9】程江波,徐滨士,梁秀兵,等.热处理对Fe-Cr基喷涂层组织及力学性能的影响[J]. 材料热处理学报,2008,29(6):140-141.
【10】燕宏伟,王岩,王建平.单体液压支柱油缸的修复工艺[J]. 煤矿机电,2004(6):59-60.
【11】郭文敏,吴玉萍,李改叶,等.低碳钢表面电弧喷涂层FeNiCr/Cr3C2与NiCrTi的热腐蚀性能[J] ,材料热处理学报,2011,32(11):128-134.
【12】金国,徐滨士,王海斗,等.不同喷涂方法制备马氏体不锈钢涂层组织性能对比[J], 焊接学报,2006,28(4):39-42.
【13】FENG Q,LI T,TENG H,et al.Investigation onthe corrosion and oxidation resistance of Ni-Al2O3nano-composite coatings prepared by sediment co-deposition[J]. Surface and Coatings Technology,2008,202(17):4137-4144.
【14】吴玉萍,林萍华,王翠玲,等.超音速火焰(HVOF)喷涂Fe-Cr基涂层的组织与耐蚀性[J]. 金属热处理,2006,31(10):34-37.
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