Mechanical Properties of Mica Glass-Ceramics |
| |
| Authors: | Dong Soo Baik Kwang Soo No John Soung-Soon Chun Yong Joon Yoon |
| |
| Affiliation: | Departments of Electronic Materials Engineering and Ceramic Science and Engineering, Korea Advanced Institute of Science and Technology, Taejon 305–701, Korea;Division of Electrical Materials, Korea Electrotechnology Research Institute, Changwon, 641–120, Korea |
| |
| Abstract: | The mechanical properties of fluorophlogopite mica-based glass-ceramics, such as fracture toughness, flexural strength, and machinability, were investigated. It has been shown that toughening increments in the glass-ceramics occurred by crack deflection and branching by crystals with a high aspect ratio. All the glass-ceramics heat treated at 1000°–1150°C exhibited a higher fracture toughness of 1.2–2.2 MPa-m1/2 as compared to 0.8 MPa-m1/2 for the parent glass, and showed average flexural strengths of 140–160 MPa. It has been suggested that ( H/KIc )2 of the mica glass-ceramic be used to estimate the machinability, because it decreases linearly with machinability. |
| |
| Keywords: | |
|
|
