Sep. 2010

Article Contents

Chinese Optics> 2010> 3(4): 318-324.

CHEN Xiao-ping, WANG Peng, LI Jun-feng, XUAN Bin, SONG Shu-mei, XIE Jing-jiang. Study on surface micro-cracks of vitreous optics[J]. Chinese Optics, 2010, 3(4): 318-324.

Citation:

CHEN Xiao-ping, WANG Peng, LI Jun-feng, XUAN Bin, SONG Shu-mei, XIE Jing-jiang. Study on surface micro-cracks of vitreous optics[J].Chinese Optics, 2010, 3(4): 318-324.

CHEN Xiao-ping, WANG Peng, LI Jun-feng, XUAN Bin, SONG Shu-mei, XIE Jing-jiang. Study on surface micro-cracks of vitreous optics[J]. Chinese Optics, 2010, 3(4): 318-324.

Citation:

CHEN Xiao-ping, WANG Peng, LI Jun-feng, XUAN Bin, SONG Shu-mei, XIE Jing-jiang. Study on surface micro-cracks of vitreous optics[J].Chinese Optics, 2010, 3(4): 318-324.

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Study on surface micro-cracks of vitreous optics

1.
Key Laboratory of Optical System Advanced Manufacturing Technology,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100039,China

Received Date:17 Apr 2010
Rev Recd Date:14 Jun 2010
Publish Date:25 Aug 2010

Abstract

Abstract

The reasons which effect on the surface quality of vitreous optics was investigated and the surface micro-crakes were regarded as a main source that could change the surface strength. The causes of the surface micro-cracks were analyzed based on the mechanical grinding and forming process, then, the crack tip stress concentration and the Griffith energy balance theory were used to analyze the crack propagation mode. Combined with the surface structure defect theory and grinding crafts, the removal mechanism of micro-cracks and the effect of HF etching method were described. Finally, the methods to enhance glass strength by manufacture technology were proposed, which focus on the some surface processing, such as ion exchanging, coating and HF eting. It suggests that the HF etching would be more suitable for the removal of surface micro-cracks in processing the vitreous optics..
- surface micro-crack,
- stress concentration,
- Griffith micro-crack,
- HF etching,
- surface strengthening

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References (1)

References

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