Research on the Mechanical Properties of CaF2 Crystal for Ultra-Precision Machining

Ming Jun Chen; Wen Bin Jiang; Jian Cheng; Xin Chu

doi:10.4028/www.scientific.net/SSP.175.77

Paper Titles

Slot Grinding of Advanced Ceramics with Brazed Diamond Cut-Off Wheels
p.52

Energy and Material Removal Mechanisms for the Grinding of Cemented Carbide with Brazed Diamond Wheels
p.58

Analysis of Energy Consumption Efficiency in Diamond Circular Sawing
p.67

Analysis of Grit Cut Depth in Fixed-Abrasive Diamond Wire Saw Slicing Single Crystal Silicon
p.72

Research on the Mechanical Properties of CaF₂ Crystal for Ultra-Precision Machining
p.77

Raman Analysis of the Silicon Wafer Scratched by Single Point Diamond
p.82

Material Removal Distribution of Chemical Mechanical Polishing by the Bionic Polishing Pad with Phyllotactic Pattern
p.87

The Effects of the Geometric Parameters of Segmented Sawblades on the Fluctuated Temperatures in Sawing
p.93

The Study of Vibration Effects on Precision Grinding Surface Quality
p.97

HomeSolid State PhenomenaSolid State Phenomena Vol. 175Research on the Mechanical Properties of CaF2...

Research on the Mechanical Properties of CaF₂ Crystal for Ultra-Precision Machining

Abstract:

Indentations on the main crystallographic plane (111) of CaF2 were analyzed. Appropriate material parameters were obtained by experiments. The process of CaF2 indentations had been investigated by the finite element approach in order to obtain the initial shear yield strength. The results show a value of 110 MPa for the initial shear yield strength. Vickers hardness of plane (111) was also investigated. The results show the dependence on the orientation of the CaF2 crystal. The hardness is small at the angular direction 0° and 120°, and at the angular direction 60°, the hardness of the largest value is 1.67GPa. The Young’s Modulus and Fracture Toughness are also obtained. These properties are valuable to the ultra-precise machining of CaF2 crystal.