Raw data of nanoindentation and micro scratch tests on brittle materials
It is the raw data of nanoindentation and micro scratch tests on brittle materials such as borofloat 33 glass, soda-lime glass, granite, boron carbide (B4C), aluminium oxide (Al2O3) and silicon carbide (SiC).
Steps to reproduce
1. Nanoindentation 1.1. Polishing The grinding and polishing of selected materials are conducted by using grinder/polisher (MetPrep3/PH-4TM, Allied High Tech Products Inc., USA) with 220 and 600 diamond grid sandpapers, 800 and 2400 grit SiC sandpapers and 3 um diamond suspension and 0.05 um final preparation solution (Chinwoo Tech Co., Ltd., South Korea). The glass specimen needed no such preparation, for its surface is mirror smooth as a result of the fabrication history. 1.2. Experiments On each material, nanoindentation tests with 5, 10, 20, 30, 40, 50 mN maximum indentation loads were performed 10 times on glass materials and 20 times on rock and ceramic materials under room temperature and humidity conditions. Test parameters are as follows - type: linear loading - maximum load: 50 mN - loading rate: 100 mN / min - unloading rate: 100 mN / min - holding time: 5 sec - indentation-tip material: diamond - indenter tip: Berkovich tip 2. Micro scratch test 2.1. Polishing The procedure is the same as in section 1.1. 2.2. Experiments On each material, experiments on the brittle materials were performed five times under room temperature and humidity conditions. Test parameters are as follows - type: constant load - normal load: 10 N - speed (mm / min): 10 - length (mm): 10 - scratch-tip material: diamond - scratch-tip size: Rockwell tip (R = 200 um and 60° cone of semi-angle)