Preparation of MoS2/Zr Coated High Speed Steel Tool and its Cutting Performance

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Abstract:

MoS2/Zr composite coatings were deposited onto M2 high speed steel tools by medium-frequency magnetron sputtered coupled with multi-arc ion plated techniques. The thickness, micro-hardness and coating-substrate adhesion strength of the coatings were studied. Surface morphologies of the as-deposited coatings as well as wear surface features after dry machining tests were investigated. The experimental results indicated that deposition of PVD MoS2/Zr composite coatings onto M2 HSS tools shows higher hardness compared to the pure MoS2 coatings, and exhibits significant enhancement in cutting performance. The wear mechanism of the MoS2/Zr coated tools is mainly delamination of the coating owing to the elevated cutting temperature and friction force.

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Periodical:

Advanced Materials Research (Volumes 69-70)

Pages:

153-157

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Online since:

May 2009

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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