Abstract
Scratch tests of SiC ceramics are carried out using a diamond fly-cutting machine tool. The formation, expansion and intersection of cracks are investigated as well as the influence of grit wear on scratch status. According to the experimental results, ductile-to-brittle transition happens with the increase of cutting depth. Micro cracks appear along the edges and on the bottom of plastic groove in plowing stage. The normal force, tangential force, the width of scratch traces, and the length of surface cracks sharply increase as the scratch distance is longer than 1600mm. The cracks intersection is found promote to material broken.
| Original language | English |
|---|---|
| Pages (from-to) | 439-446 |
| Number of pages | 8 |
| Journal | Optoelectronics and Advanced Materials, Rapid Communications |
| Volume | 9 |
| Issue number | 3-4 |
| State | Published - 2015 |
Keywords
- Cracks
- Inclined scratch
- Multi scratch
- SiC ceramics
- Single-grit
- Wear
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