Study on morphology and corrosion resistance of electroless Ni-P coatings

被引：32

作者：

Rahimi, A. R. ^{[2
]}

Modarres, H. ^{[1
]}

Abdouss, M. ^{[2
]}

机构：

[1] Amirkabir Univ Technol, Dept Chem Engn, Tehran Polytech, Tehran, Iran

[2] Amirkabir Univ Technol, Dept Chem, Tehran Polytech, Tehran, Iran

来源：

SURFACE ENGINEERING | 2009年 / 25卷 / 05期

关键词：

Electroless nickel-phosphorus plating; Hardness; Heat treatment; Corrosion resistance; Electrochemical impedance spectroscopy; COMPOSITE COATINGS; HEAT-TREATMENT; AUTOCATALYTIC NIP; NICKEL-PHOSPHORUS; ORGANIC ADDITIVES; WEAR; BEHAVIOR; FRICTION;

D O I：

10.1179/174329409X379273

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The nickel-phosphorus (Ni-P) coating was obtained by electroless plating. The effect of heat treatment and the type of stabiliser on hardness value, corrosion resistance and microstructure of Ni-P coatings were studied by scanning electron microscope, X-ray difractometer and electrochemical impedance spectroscopy method. The Ni-P electroless coating contains similar to 9.18 wt-% P and 10.68 wt-% P according to the type of stabilising agent, thiourea and lead acetate respectively. The results showed that coatings obtained using lead acetate as stabiliser have higher corrosion resistance than ones that obtained from bath contained thiourea as stabiliser. The coatings deposited from an electroless bath have the increased hardness after heat treatment due to the transformation of amorphous phase Ni-P to crystalline phase Ni3P. Corrosion resistance of Ni-P coatings increased after heat treatment at 400 degrees C.

引用

页码：367 / 371

页数：5

共 32 条

[1] Novel composite coatings containing (TiC-Al2O3) powder [J].

Aal, A. Abdel ;

Zaki, Z. I. ;

Hamid, Z. Abdel .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 447 (1-2) :87-94

[2] Electroless alloy/composite coatings: A review [J].

Agarwala, RC ;

Agarwala, V .

SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES, 2003, 28 (3-4) :475-493

[3]

Alberto L., 2005, J MATER PROCESS TECH, V170, P37

[4] Wear behavior of Ni-P and Ni-P-Al2O3 electroless coatings [J].

Alirezaei, S. ;

Monirvaghefi, S. M. ;

Salehi, M. ;

Saatchi, A. .

WEAR, 2007, 262 (7-8) :978-985

[5] Autocatalytic nickel coatings on aluminium with improved abrasive wear resistance [J].

Apachitei, I ;

Duszczyk, J .

SURFACE & COATINGS TECHNOLOGY, 2000, 132 (01) :89-98

[6] Electroless Ni-P composite coatings: The effect of heat treatment on the microhardness of substrate and coating [J].

Apachitei, I ;

Duszczyk, J ;

Katgerman, L ;

Overkamp, PJB .

SCRIPTA MATERIALIA, 1998, 38 (09) :1347-1353

[7] The effect of heat treatment on the structure and abrasive wear resistance of autocatalytic NiP and NiP-SiC coatings [J].

Apachitei, I ;

Tichelaar, FD ;

Duszczyk, J ;

Katgerman, L .

SURFACE & COATINGS TECHNOLOGY, 2002, 149 (2-3) :263-278

[8] Solid-state reactions in low-phosphorus autocatalytic NiP-SiC coatings [J].

Apachitei, I ;

Tichelaar, FD ;

Duszczyk, J ;

Katgerman, L .

SURFACE & COATINGS TECHNOLOGY, 2001, 148 (2-3) :284-295

[9] Electroless Ni-P composite coatings [J].

Balaraju, JN ;

Narayanan, TSNS ;

Seshadri, SK .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2003, 33 (09) :807-816

[10] Effect of accelerators and stabilizers on the formation and characteristics of electroless Ni-P deposits [J].

Baskaran, I. ;

Narayanan, T. S. N. Sankara ;

Stephen, A. .

MATERIALS CHEMISTRY AND PHYSICS, 2006, 99 (01) :117-126

← 1 2 3 4 →