铬镀层及其阴极化修饰镀层的钝化行为

中国腐蚀与防护学报

1995, Vol. 15

Issue (1): 21-27

研究报告

本期目录 | 过刊浏览

铬镀层及其阴极化修饰镀层的钝化行为

温国谋;马廷椿;方炳福;郑辅养;陈爱成

中国科学院福建物质结构研究所二部

PASSIVATION BEHAVIOUR OF CHROMIUM PLATING FILM AND ITS CATHODICALLY MODIFIED SPECIES

Wen Guomou; Ma Tingchun; Fang Bingfu; Zheng Fuyang; Chen Aicheng(Fujian Institute of Research on the Structure of Matter Chinese Academy Of Sciences)

全文: PDF(640 KB)

摘要: 用电沉积方法在ＡＩＳＩ４３０不锈钢上得到铬、铬钯交替镀层和铬把复合镀层．凭借钯的阴极修饰效应，含钯的铬镀层在除氧的非氧化性酸中具有自钝化能力．极化曲线和阻抗频谱测定表明，在相应铬镀层处于活化－钝化过渡的电位区间，含钯镀层都表现出净阴极电流；活化溶解与钝化过程随电位的相对发展变化可由低频段容抗圈的演变来推定．铬钯复合镀层具有更大的钝化膜阻抗．

关键词 ：阴极化修饰, 铬镀层, 自钝化

Abstract：Electrolytic plating chromium plain film, alternately multi-layered palladium alld chromium plating film and palladium-containing chromium composite plating film on AISI 430 stainless steel were compared for the purpose of showing the effect of palladium as cathodic modification element in chromium plating film. The electrochemical behaviour of the above coatillgs was examined in comparison to 430SS substrate by voltammetry and impedance spectroscopy. At potentials corresponding to the active-passive transition for chromium film, net cathodic current was measured oil those palladium-containing platings. While chromium may stably exist in either the passive or active state, small amoullt additioll of palladium significantly increases the corrosion resistance of chromium plating in deaerated 5% and 20% sulfuric acid solutions in consequence of spontaneous passivation. The tendency is more propounced for the composite coating. The capacitive circle which appears in the low frequency range of IHz-0.01Hi on the impedance diagrams is considered as ajssociated with the passivation process.

Key words： Cathodic modification Chromium plating Spontaneous passivation

收稿日期: 1995-02-25

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	温国谋
	马廷椿
	方炳福
	郑辅养
	陈爱成
44.8K

引用本文:

温国谋;马廷椿;方炳福;郑辅养;陈爱成. 铬镀层及其阴极化修饰镀层的钝化行为[J]. 中国腐蚀与防护学报, 1995, 15(1): 21-27.
. PASSIVATION BEHAVIOUR OF CHROMIUM PLATING FILM AND ITS CATHODICALLY MODIFIED SPECIES. J Chin Soc Corr Pro, 1995, 15(1): 21-27.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1995/V15/I1/21

1TomashovND．Corrosion,1958,4:382SternM．JElectrochem．Soc,1958,105:6383HigginsonA．BritCorros．J．;1989,24(4):2974AnnualBookofASTMStandards,ASTMG5725曹楚南．腐蚀电化学原理,北京:化学工业出版社,1985．2866GerretsanJH,DewitJHW．Cor．Sci,1990,30(11):10757DobbelaarJAL,DeWitJHW．J．Electrochem．Soc,1992,139(3):7168AgarwalaVS,BieferGJ．Corrosion,1972,28(2):649TomashovND,Cherno、GP,UstinskyEN．Corrosion,1984,40(3):134

[1]	李雪莉; 李瑛; 王福会 . Fe20Cr溅射纳米涂层腐蚀电化学性能研究[J]. 中国腐蚀与防护学报, 2003, 23(2): 84-88 .

Viewed

Full text

Abstract

Cited

Shared

Discussed