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Tensile Stress-Strain Properties of a-C:H (Diamond-Like Carbon) thin Films

Published online by Cambridge University Press:  22 February 2011

Paul D. Garrett  and
Brian K. Daniels
Paul D. Garrett
Affiliation:
Physical and Analytical Science Center, Monsanto Chemical Co., 730 Worcester St., Springfield, MA 01151
Brian K. Daniels
Affiliation:
Advanced Performance Materials, Monsanto Chemical Co., 400 N. Lindbergh St., St. Louis, MO 63167
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Abstract

Fundamental mechanical properties of a-C:H (amorphous or “diamond-like” carbon, DLC) thin film coatings have been investigated. Coatings were deposited by a methane-argon RF plasma on polycarbonate films. Tensile stress-strain behavior of the coated polymer was studied using an extensometer to monitor strain. The differences in moduli between uncoated and coated samples were used to calculate apparent coating moduli, which varied from 1 GPA to 82 GPa. The mode of failure was observed via in-situ optical microscopy during deformation. Intrinsic bond strength of the coating/substrate interface was estimated from crack spacings in the deformed coating.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 239: Symposium D – Thin Films: Stresses and Mechanical Properties III , 1991 , 659
Copyright
Copyright © Materials Research Society 1992

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References

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