Mechanical characteristics of glass-ceramics surface by means of nano-indentation

Jinghe Wang; Xun Wang; Xiaoli Song; Shunzeng Li; Jianchao Chen

doi:10.1117/12.866051

12 October 2010 Mechanical characteristics of glass-ceramics surface by means of nano-indentation

Jinghe Wang, Xun Wang, Xiaoli Song, Shunzeng Li, Jianchao Chen

Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 76565V (2010) https://doi.org/10.1117/12.866051
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

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.

Citation Download Citation

Jinghe Wang, Xun Wang, Xiaoli Song, Shunzeng Li, and Jianchao Chen "Mechanical characteristics of glass-ceramics surface by means of nano-indentation", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76565V (12 October 2010); https://doi.org/10.1117/12.866051

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