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Mechanical Testing in Electroless Ni Modified TiN Coating

Published online by Cambridge University Press:  15 February 2011

J. G. Duh ,
J. C. Doong  and
C. T. Huang
J. G. Duh
Affiliation:
Department of Materials Science and EngineeringNational Tsing Hua UniversityHsinchu, Taiwan
J. C. Doong
Affiliation:
Department of Materials Science and EngineeringNational Tsing Hua UniversityHsinchu, Taiwan
C. T. Huang
Affiliation:
Department of Materials Science and EngineeringNational Tsing Hua UniversityHsinchu, Taiwan
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Abstract

TiN films are prepared by reactive rf magnetron sputtering on carbon steel substrates which are widely applied as structural materials. The electroless Ni-P plating is introduced as an interlayer in the surface modification of TiN coating. The electroless Ni-P deposit crystallizes during rf sputtering due to the elevated sputtering temperature and thus a TiN/Ni3P/Fe coating assembly is formed.

The employment of electroless Ni-P deposit results in an increase in the surface microhardness and adhesion strength. The surface hardness as high as 2266HK1 close to the hardness of bulk TiN can be achieved in the Ni3P interlayer modified TiN coating. With respect to the wear-resistance, the adhesion of the TiN coating plays an important role for the sliding wear-resistance and the interlayer Ni3P acts as a hard , barrier instead of the soft carbon steel substrate.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 308: Symposium M1 – Thin Films: Stresses and Mechanical Properties IV , 1993 , 589
Copyright
Copyright © Materials Research Society 1993

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References

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