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镀液中SiC含量对化学镀Ni-P-SiC复合镀层结构和性能的影响

Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2014-01-01

Journal: 腐蚀科学与防护技术

Included Journals: CSCD、ISTIC、PKU、Scopus

Volume: 26

Issue: 4

Page Number: 307-311

ISSN: 1002-6495

Key Words: AZ91D镁合金; 化学镀; Ni-P合金; SiC颗粒

Abstract: 利用扫描电镜(SEM)、X射线衍射(XRD)和腐蚀电化学测试研究了镀液中SiC 含量对化学镀Ni-P-SiC
   复合镀层结构和耐蚀性能的影响。结果表明,随着镀液中SiC 含量的增加,镀层沉积速率和镀层中SiC
   共沉积量呈现先增加后降低的趋势,镀层中P含量和沉积胞状颗粒尺寸逐渐降低。电化学测试结果表明,镀层中SiC
   共沉积量的变化不影响镀层腐蚀反应机理,但是镀层耐蚀性随SiC 共沉积量的增加而降低。结构分析显示,Ni- P-SiC
   镀层致密性良好,基本完全覆盖了镁合金基体。

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