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Proceedings Paper

Mechanical characteristics of glass-ceramics surface by means of nano-indentation
Author(s): Jinghe Wang; Xun Wang; Xiaoli Song; Shunzeng Li; Jianchao Chen
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Paper Abstract

Evaluating the surface mechanical characteristics of glass-ceramics by Nano-indentation method: contact stiffness(S), strain hardening exponent (n) and the ratio of indentation area (c2), the changes of materials mechanical properties are related to the degree of work hardening. The research results indicated that contact stiffness, strain hardening exponent and the ratio of indentation area all change significantly when the indentation depth is 115nm. And coming to some conclusions: through the relationship between contact stiffness and the indentation depth, knowing that when the indentation depth is lower than 115nm ,the relationship is non-linear, and the glass-ceramic is not homogeneous; when the indentation depth is lower than 115nm,the strain hardening exponent increases with the increase of the indentation depth, when the indentation depth is higher than 115nm, the strain hardening exponent is stabilized to 0.30; when the indentation depth is lower than 115nm, the ratio of indentation area decreases with the increase of the indentation depth and when the indentation depth is higher than 115nm, c2 tends to stable. It can be seen that there is a depth of about 115nm affected layer on the ultra-smooth surface of glass-ceramic. The research of surface properties provides a theoretical basis and related technology supporting for the gyroscope reflection substrate processing.

Paper Details

Date Published: 13 October 2010
PDF: 5 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76565V (13 October 2010); doi: 10.1117/12.866051
Show Author Affiliations
Jinghe Wang, Harbin Institute of Technology (China)
Xun Wang, Harbin Institute of Technology (China)
Xiaoli Song, Flight Automatic Control Research Institute (China)
Shunzeng Li, Flight Automatic Control Research Institute (China)
Jianchao Chen, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Jose M. Sasian; Libin Xiang; Sandy To, Editor(s)

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