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Simple methods for measuring tensile and shear bond strength and for determining elastic modulus and strength of coating

Published online by Cambridge University Press:  11 February 2011

Yiwang Bao  and
Yanchun Zhou
Yiwang Bao
Affiliation:
High-performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 2 Wenhua Road, Shenyang 110016, P. R. China
Yanchun Zhou
Affiliation:
High-performance Ceramic Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 2 Wenhua Road, Shenyang 110016, P. R. China
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Abstract

Two new testing techniques, one is for evaluating the ceramics-ceramics and metal-ceramics bond strength, and one is for determining the elastic modulus and fracture strength of brittle coating, were developed respectively. Tensile and shear bond strength were obtained by using compression load on a cross-bonded samples. Rectangular section specimens with surrounding coating or single face coating were used for evaluating the mechanical properties of brittle coating. Analytical formula for the modulus calculation of coatings was derived based on the mechanics of materials. Stress analysis of coated beam provides the expression of the critical stress to fracture in the coating layer. Experimental results confirmed the reliability and convenience of this simple technique.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 750: Symposium Y – Surface Engineering 2002–Synthesis, Characterization and Applications , 2002 , Y8.4
Copyright
Copyright © Materials Research Society 2003

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References

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