Microstructure and dry sliding tribological behavior of microarc oxidation coating formed on Ti6Al4V against steel

Yarning Wang; Tingquan Lei; Dechang Jia; Yu Zhou; Jia Hu Ouyang

doi:10.4028/0-87849-410-3.1734

Microstructure and dry sliding tribological behavior of microarc oxidation coating formed on Ti6Al4V against steel

Yarning Wang^*
, Tingquan Lei
, Dechang Jia
, Yu Zhou
, Jia Hu Ouyang

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A nanostructured TiO₂ dominated ceramic coating was fabricated on Ti6Al4V by microarc oxidation (MAO). The coating with about 30 μm thickness is porous in the outer layer and compact in the inner layer, mainly composed of rutile and a small amount of anatase TiO₂, both in nano grain structure. The hardness and elastic modulus of the compact layer in the coating are about 8.5 GPa and 87.4 GPa. The adhesion strength is about 70MPa. The friction coefficient of the polished coating sliding against GCr15 steel is as low as 0.2, which is clearly superior to that of the unpolished one. This is attributed to the low surface roughness. However, the oxidation wear mechanism occurring at the later stage of wear tests leads to a gradual increase of friction coefficient.

Original language	English
Pages (from-to)	1734-1736
Number of pages	3
Journal	Key Engineering Materials
Volume	336-338 II
DOIs	https://doi.org/10.4028/0-87849-410-3.1734
State	Published - 2007

Keywords

Microarc oxidation
Titanium alloy
Tribological property

Access to Document

10.4028/0-87849-410-3.1734

Cite this

@article{e71f085204924e95a7ec7be177773f70,

title = "Microstructure and dry sliding tribological behavior of microarc oxidation coating formed on Ti6Al4V against steel",

abstract = "A nanostructured TiO2 dominated ceramic coating was fabricated on Ti6Al4V by microarc oxidation (MAO). The coating with about 30 μm thickness is porous in the outer layer and compact in the inner layer, mainly composed of rutile and a small amount of anatase TiO2, both in nano grain structure. The hardness and elastic modulus of the compact layer in the coating are about 8.5 GPa and 87.4 GPa. The adhesion strength is about 70MPa. The friction coefficient of the polished coating sliding against GCr15 steel is as low as 0.2, which is clearly superior to that of the unpolished one. This is attributed to the low surface roughness. However, the oxidation wear mechanism occurring at the later stage of wear tests leads to a gradual increase of friction coefficient.",

keywords = "Microarc oxidation, Titanium alloy, Tribological property",

author = "Yarning Wang and Tingquan Lei and Dechang Jia and Yu Zhou and Ouyang, \{Jia Hu\}",

year = "2007",

doi = "10.4028/0-87849-410-3.1734",

language = "英语",

volume = "336-338 II",

pages = "1734--1736",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications Ltd",

}

TY - JOUR

T1 - Microstructure and dry sliding tribological behavior of microarc oxidation coating formed on Ti6Al4V against steel

AU - Wang, Yarning

AU - Lei, Tingquan

AU - Jia, Dechang

AU - Zhou, Yu

AU - Ouyang, Jia Hu

PY - 2007

Y1 - 2007

N2 - A nanostructured TiO2 dominated ceramic coating was fabricated on Ti6Al4V by microarc oxidation (MAO). The coating with about 30 μm thickness is porous in the outer layer and compact in the inner layer, mainly composed of rutile and a small amount of anatase TiO2, both in nano grain structure. The hardness and elastic modulus of the compact layer in the coating are about 8.5 GPa and 87.4 GPa. The adhesion strength is about 70MPa. The friction coefficient of the polished coating sliding against GCr15 steel is as low as 0.2, which is clearly superior to that of the unpolished one. This is attributed to the low surface roughness. However, the oxidation wear mechanism occurring at the later stage of wear tests leads to a gradual increase of friction coefficient.

AB - A nanostructured TiO2 dominated ceramic coating was fabricated on Ti6Al4V by microarc oxidation (MAO). The coating with about 30 μm thickness is porous in the outer layer and compact in the inner layer, mainly composed of rutile and a small amount of anatase TiO2, both in nano grain structure. The hardness and elastic modulus of the compact layer in the coating are about 8.5 GPa and 87.4 GPa. The adhesion strength is about 70MPa. The friction coefficient of the polished coating sliding against GCr15 steel is as low as 0.2, which is clearly superior to that of the unpolished one. This is attributed to the low surface roughness. However, the oxidation wear mechanism occurring at the later stage of wear tests leads to a gradual increase of friction coefficient.

KW - Microarc oxidation

KW - Titanium alloy

KW - Tribological property

UR - https://www.scopus.com/pages/publications/33947284969

U2 - 10.4028/0-87849-410-3.1734

DO - 10.4028/0-87849-410-3.1734

M3 - 文章

AN - SCOPUS:33947284969

SN - 1013-9826

VL - 336-338 II

SP - 1734

EP - 1736

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Microstructure and dry sliding tribological behavior of microarc oxidation coating formed on Ti6Al4V against steel

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this