Indentation and Scratching Experimental Research on Brittle-Ductile Transition of Optical Glass SF6

Peng Jia

doi:10.4028/www.scientific.net/KEM.589-590.480

Paper Titles

Study on the Machining Parameters in Polishing Single-Crystal SiC Wafers with SG Films
p.457

The Adherence Mechanism of Superalloy Honing Oilstone
p.464

Experiment Research Progresses of Single Abrasive Grain Grinding
p.470

Analysis of Path Distribution in Lapping and Polishing with Single Fixed Abrasive
p.475

Indentation and Scratching Experimental Research on Brittle-Ductile Transition of Optical Glass SF6
p.480

Experimental Research on Double-Side Lapping of Cylindrical Roller by Taguchi Methods
p.485

Development of Ultra-Precison Single-Plane Lapping Machine
p.491

Experiment Research of Polishing Capability of Magnetorheological Finishing with a Small Permanent Magnet Ball-End Tool
p.497

Study of Electrode Wear Ratio of Piezoelectric Self-Adaptive Micro-EDM
p.505

HomeKey Engineering MaterialsKey Engineering Materials Vols. 589-590Indentation and Scratching Experimental Research...

Indentation and Scratching Experimental Research on Brittle-Ductile Transition of Optical Glass SF6

Abstract:

In diamond cutting of optical glasses, the magnitude of critical depth of cut for brittle-ductile transition is an important factor affecting the machinability of the work material in terms of production rate and surface quality. In this work, scratching tests with increasing depths of cut were conducted on glass BK7 to evaluate the influence of the cutting fluid properties on the critical depth of cut. Boric acid solutions of different concentrations were selected as cutting fluids in the tests. The resulting scratches were examined utilizing a white light interferometer and the values of the critical depth of cut were determined based on the observations of the micro-morphology of the scratch surfaces produced. Experimental results indicated that compared with the process without cutting fluid action, the critical depth of cut in diamond cutting of glass BK7 can be increased by using boric acid solution as the cutting fluid.