锆合金表面氟化物-磷酸盐预镀层的制备及对化学镀层性能的影响

材料导报

2020, Vol. 34

Issue (Z1): 390-394

金属与金属基复合材料

锆合金表面氟化物-磷酸盐预镀层的制备及对化学镀层性能的影响

唐伍实秋¹, 王斌^1,2, 江明晏¹, 周椤¹, 叶洋呈¹

1 西南石油大学材料科学与工程学院,成都 610500;
2 四川省焊接工程技术研究中心,成都 610500

Preparation of Fluoride-phosphate Pre-coating on Zirconium Alloy andIts Effect on the Properties of Electroless Plating Coating

TANG Wushiqiu¹, WANG Bin^1,2, JIANG Mingyan¹, ZHOU Luo¹, YE Yangcheng¹

1 School of Materials Science and Engineering, Southwest Petroleum University,Chengdu 610500, China;
2 Sichuan Welding Engineering Technology Research Center,Chengdu 610500, China

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摘要为了提高核用锆合金的耐蚀性,利用化学镀的方法在锆合金表面制备一层非晶态镀层。为改善基体与化学镀层之间的结合力,以酸洗活化对锆合金进行前处理,之后采用氟化物-磷酸盐化学转化工艺,在锆合金表面形成一层氟化物膜层作为预镀层,再在预镀层上制备三种不同的化学镀层。采用SEM、EDS、XRD分析膜层的微观形貌及成分,并研究锆合金和化学镀层之间的结合力和硬度,通过电化学试验测试极化曲线评价其耐腐蚀性。结果表明:预镀层使得基体和化学镀层之间的结合力显著提高,其中,Ni-W-P化学镀层的结合力最大,临界载荷为49.75 N;Ni-Ce-P化学镀层的硬度最高,达505.2HV;Ni-W-P化学镀层的自腐蚀电位最高,为-0.331 96 V。

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关键词: 锆合金预镀层化学镀非晶态结合力极化曲线

Abstract: In order to improve the corrosion resistance of zirconium alloy, an amorphous coating was prepared on the surface of zirconium alloy by electroless plating. In order to improve the poor adhesion between the substrate and the chemical coating, the zirconium alloy was pretreated by pic-king-activation, followed by a fluorine-phosphate chemical conversion process. A fluoride film layer was formed on the surface of the zirconium alloy as the pre-coating, and three different electroless plating coatings were prepared on top of the pre-coating. SEM,EDS and XRD were used to analyze the microstructure and composition of the film layer, the adhesion and the hardness between the zirconium alloy and the electroless pla-ting coating were studied. The results showed that the binding force of Ni-W-P coating was the highest and the critical load was 49.75 N. The hig-hest hardness is Ni-Ce-P coating, up to 505.2HV. Ni-W-P coating have the highest self-corrosion potential of -0.331 96 V.

Key words: zirconium alloy pre-coating electroless plating amorphous binding force polarization curve

发布日期: 2020-07-01

ZTFLH:

TG174

基金资助: 四川省科技计划重点研发项目(2019YFG438)

作者简介: 唐伍实秋,西南石油大学硕士研究生,研究方向为材料表面技术、表面改性。硕士在读期间参与省级科研项目“核用锆合金表面化学镀层的性能研究”;王斌,西南石油大学教授。现任中国机械工业教育协会材料成型及控制工程学科教学委员会委员,中国机械工程学会焊接分会理事,四川省腐蚀与防护学会常务理事,四川省理化检测专委会副理事长,四川省焊接工程技术研究中心副主任。近5年主持主研国家自然科学基金、四川省教育厅基金、中国石油天然气集团公司企业委培项目等10余项;先后获四川省优秀教学成果二、三等奖,教育部“十三五”全国优秀教育科研先进个人称号;在Materials Chemistry and Physics、Materials and Design、Materials Science and Engineering A等高水平国际期刊及国际热处理年会、国际腐蚀大会等发表学术论文70余篇,获国家发明专利4项并全部转化,在科学出版社等出版教材4部。

引用本文:

唐伍实秋, 王斌, 江明晏, 周椤, 叶洋呈. 锆合金表面氟化物-磷酸盐预镀层的制备及对化学镀层性能的影响[J]. 材料导报, 2020, 34(Z1): 390-394.
TANG Wushiqiu, WANG Bin, JIANG Mingyan, ZHOU Luo, YE Yangcheng. Preparation of Fluoride-phosphate Pre-coating on Zirconium Alloy andIts Effect on the Properties of Electroless Plating Coating. Materials Reports, 2020, 34(Z1): 390-394.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ1/390

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