Vanadium carbide coatings on die steel deposited by the thermo-reactive diffusion technique

被引：103

作者：

Aghaie-Khafri, M. ^{[1
]}

Fazalipour, F. ^{[1
]}

机构：

[1] KN Toosi Univ Technol, Fac Mech Engn, Tehran, Iran

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2008年 / 69卷 / 10期

关键词：

Alloys; Thin films; Vapor deposition; Diffusion;

D O I：

10.1016/j.jpcs.2008.04.040

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermal reactive diffusion coating of vanadium carbide on DIN 1.2367 die steel substrate was performed in a powder mixture consisting of ferro-vanadium, ammonium chloride, alumina and naphthalene at 950, 1050 and 1150 degrees C for 1-5h. The carbide layers were characterized by means of microstructure, microhardness, X-ray diffraction and chemical analysis. Depending on the coating process time and temperature, the thickness of the vanadium carbide layer formed on the substrate ranged from 2.3 to 23.2 pm. The hardness of vanadium carbide layers was about 2487 HV. Dry wear tests for uncoated and coated DIN 1.2367 die steel were carried out on pin-on-disk configuration and at a sliding speed of 0.13 m/s. The results showed superior wear properties of the coated samples. The kinetics of vanadium carbide coating by the pack method was also studied and the activation energy for the thermo-reactive diffusion process was estimated to be 173.2 kJ/mol. (C) 2008 Elsevier Ltd. All rights reserved

引用

页码：2465 / 2470

页数：6

共 13 条

[11] A study on kinetics of CrxC-coated high-chromium steel by thermo-reactive diffusion technique [J].

Sen, S .

VACUUM, 2005, 79 (1-2) :63-70

[12] Wear properties of niobium carbide coatings performed by pack method on AISI 1040 steel [J].

Sen, U .

THIN SOLID FILMS, 2005, 483 (1-2) :152-157

[13] Kinetics of niobium carbide coating produced on AISI 1040 steel by thermo-reactive deposition technique [J].

Sen, U .

MATERIALS CHEMISTRY AND PHYSICS, 2004, 86 (01) :189-194

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