Investigation of the interfacial condition between bioceramic coatings and metallic substrates using guided waves

被引:0
|
作者
Saffari, N [1 ]
Ong, CS [1 ]
机构
[1] UCL, Dept Mech Engn, Ultrason Grp, London WC1E 7JE, England
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暂无
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The work reported here is on the characterisation of the interfacial properties between plasma-sprayed Hydroxyapatite coatings on titanium substrates as used in cement-less hip orthopaedic implants. The phase velocity dispersion for the first Rayleigh-type mode for the coating-substrate system has been shown to be sensitive to the interfacial stiffness. Different interfacial conditions between the coating and substrate have been obtained by cyclic loading of the specimens in a four-point bend fatigue machine. The measured interfacial stiffness is then correlated with the interfacial fracture strength obtained by standard destructive shear tests.
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页码:1125 / 1131
页数:7
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