Nanocrystalline hard chromium electrodeposition from trivalent chromium bath containing carbamide and formic acid: Structure, composition, electrochemical corrosion behavior, hardness and wear characteristics of deposits

被引：91

作者：

Danilov, F. I. ^{[1
]}

Protsenko, V. S. ^{[1
]}

Gordiienko, V. O. ^{[1
]}

Kwon, S. C. ^{[2
]}

Lee, J. Y. ^{[2
]}

Kim, M. ^{[2
]}

机构：

[1] Ukrainian State Univ Chem Technol, Dept Phys Chem, UA-49005 Dnepropetrovsk, Ukraine

[2] Korea Inst Machinery & Mat, Surface Engn Dept, Chang Won 641010, Gyeongnam, South Korea

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 18期

关键词：

Trivalent chromium bath; Hard chromium electrodeposition; Nanocrystalline coatings; Hardness; Wear characteristics; C ALLOY COATINGS; CR(III) ELECTROLYTES;

D O I：

10.1016/j.apsusc.2011.04.095

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The paper is devoted to the structure, composition and properties investigations of coatings obtained from a sulfate trivalent chromium bath containing formic acid and carbamide as the complexing agents. The results indicate that the deposits have a nanocrystalline type of structure-there are regions with atomic ordered arrangement in bulk material with the average size of 3-5 nm. Carbon is present as chromium carbide within the coating and it is distributed uniformly inside of the deposit. The deposits under study exhibit particular electrochemical behavior (absence of the active dissolution range in acid solution). The hardness of these coatings does not differ noticeably from that typical of coatings obtained in Cr(VI)-based baths. The wear characteristics of the deposits from the proposed bath are somewhat better than in the case of a common hexavalent chromium bath. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：8048 / 8053

页数：6

共 23 条

[1]

[Anonymous], 1987, Structure Analysis by Small-Angle X-Ray and Neutron Scattering

[2] Electroplating of chromium coatings from Cr(III)-based electrolytes containing water soluble polymer [J].

Danilov, F. I. ;

Protsenko, V. S. ;

Butyrina, T. E. ;

Vasil'eva, E. A. ;

Baskevich, A. S. .

PROTECTION OF METALS, 2006, 42 (06) :560-569

[3]

Danilov F.I., 1993, ZASHCH MET, V29, P942

[4] ELECTROCATALYTIC ACTIVITY OF ANODES IN REFERENCE TO CR(III) OXIDATION REACTION [J].

DANILOV, FI ;

VELICHENKO, AB .

ELECTROCHIMICA ACTA, 1993, 38 (2-3) :437-440

[5]

Danilov FI, 1997, RUSS J ELECTROCHEM+, V33, P499

[6] Properties and preparation of amorphous chromium carbide electroplates [J].

Edigaryan, AA ;

Safonov, VA ;

Lubnin, EN ;

Vykhodtseva, LN ;

Chusova, GE ;

Polukarov, YM .

ELECTROCHIMICA ACTA, 2002, 47 (17) :2775-2786

[7] Characterization of as-deposited and annealed Cr-C alloy coatings produced from a trivalent chromium bath [J].

Ghaziof, S. ;

Golozar, M. A. ;

Raeissi, K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 496 (1-2) :164-168

[8]

Glatter O., 1982, SMALL ANGLE XRAY SCA

[9]

KRATKY O, 1966, J COLLOID INTERF SCI, V24, P211

[10] Kinetics of electroreduction of Cr3+ ions in sulfate solutions [J].

Kuznetsov, VV ;

Vinokurov, EG ;

Kudryavtsev, VN .

RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2001, 37 (07) :699-703

← 1 2 3 →