An Evaluation of the Adhesive Strength of the Interface between a Coating and Substrate
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概要
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Scratch tests were carried out on TiC and TiN coatings which had been deposited by PVD (Physical Vapor Deposition) and CVD (Chemical Vapor Deposition) techniques. The critical load L_c was detected by the acoustic emission method (AE) and also by the frictional force curve. The critical load corresponded to the load at which local delamination of coating was observed on the scratch track. A study the scratch tracks induced in a coating during the scratch test revealed that fine cracks, which propagated parallel to the scratch track, were created before local delamination occurred. Other cracks, which propagated perpendicular to the scratch direction, were observed to form in the scratch track at the critical load. Localized delamination also occurred at the edge of scratch track at L_c. The stress distribution at the interface was estimated by FEM (Finite Element Method) analysis. From both the experimen- tal and analytical results, it was found that local delamination occurred at a critical shear stress at the interface between coating and substrate. Since the shear stress at the interface decreased with decreasing tangential force, the critical load L_c increased with decreasing of tangential force. Indentation tests without tangential force was also carried out. The critical load was higher in the indentation test compared to that in scratch test. However, the critical shear stresses at the interface for both scratch and indentation tests coincided with each other. It was concluded that the adhesive strength between coating and substrate is a function of the critical interfacial shear stress.
- 一般社団法人日本機械学会の論文
- 2003-07-15
著者
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MUTOH Yoshiharu
Department of Mechanical Engineering, Nagaoka University of Technology
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Sasaki Yu
Nagaoka University Of Technology
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MIYASHITA Yukio
Department of Mechanical Engineering, Nagaoka University of Technology
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Miyashita Yukio
Department Of Mechanical Engineering Nagaoka Unversty Of Technology
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka Unversty Of Technology
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka University Of Technology
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Mutoh Yoshiharu
Dept. Of Mechanical Engineering Nagaoka Univ. Of Tech.
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Miyashita Yukio
Department Of Mechanical Engineering Nagaoka Univ. Of Technology
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Xu J‐q
School Of Civil Engineering And Mechanics Shanghai Jiaotong Univ.
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Xu Jin-quan
Department Of Mechanical Engineering Nagaoka University Of Technology:(present Address)school Of Civ
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Xu Jin-quan
Department Of Mechanical Engineering Nagaoka Univ. Of Technology
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SASAKI Yu
Graduate Student, Nagaoka University of Technology
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KUROISHI Tomoaki
Graduate Student, Nagaoka University of Technology
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WATANABE Takanori
Graduate Student, Nagaoka University of Technology
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YASUOKA Manabu
Nachi-Fujikoshi Corp.
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Kuroishi Tomoaki
Nagaoka University of Technology
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Watanabe Takanori
Nagaoka University of Technology
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka Univ. Of Technology
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Xu Jin
School Of Civil Engineering And Mechanics Shanghai Jiaotong Univ.
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MUTOH Yoshiharu
Department of Material Science, Nagaoka University of Technology
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