Research on Subsurface Damage After Abrasives and Fixed-Abrasive Lapping of K9 Glass

Abstract:

Fixed-abrasive lapping (FAL) is a new machining technology and is adopted to manufacture hard brittle materials to obtain the high surface quality. In the same machining condition, K9 glasses are lapped by abrasives and fixed-abrasive, respectively. Two grain sizes of diamond abrasives are adopted in every lapping means. Differential chemical etch method (DCEM) is employed to measure the depth of subsurface damage (SSD) of different lapping means. Surface damages are compared by Microscope. The results show that the depth of SSD is 53 and 15.2μm after abrasives lapping (AL) by 40 and 28μm diamond abrasives. FAL with 40 and 28μm diamond abrasive leads to 4.5 and 3.4μm subsurface damage depth, respectively. FAL can get smaller surface damage and shallower depth of SSD than AL. And FAL can obtain the higher surface quality than AL.

• Periodical: Key Engineering Materials (Volume 487)
• Pages: 253-256
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.487.253
• Online since: July 2011
• Authors: Jun Li, P. Gao, Yong Wei Zhu, B. Li, Y.L. Sun, D.W. Zuo
• Keywords: Abrasives Lapping, Differential Chemical Etch Method, Fixed-Abrasive Lapping, Subsurface Damage

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