维氏硬度标准ISO-14705-2016细陶瓷单晶陶瓷硬度的试验方法

【概述】

维氏硬度标准ISO-14705-2016细陶瓷单晶陶瓷硬度的试验方法

【实验/设备条件】

MMT-x7b 显微维氏硬度计 1台

Measuring device, capable of measuring the indentation diagonals with a readout resolution

of ±0,2 μm or finer. A numerical aperture (NA) between 0,60 and 0,95 for the objective lens for the

microscope is recommended. Verification of the measuring device shall be carried out in accordance

with ISO 6507-2.

【样品提取】

The test shall be carried out on a surface which is smooth, flat and free from foreign matter. The test piece shall be polished to permit accurate measurement of the diagonal lengths of the indentation. Preparation shall be carried out in such a way that any alteration of the surface hardness is minimized. Surfaces shall not be thermally or chemically etched. If applicable, residual surface stresses shall be removed by suitable polishing or annealing procedures.

【实验/操作方法】

 In general, the test shall be carried out at room temperature within the limits of 10 °C to 35 °C. Tests carried out under controlled conditions shall be made at a temperature of 23 °C ± 5 °C.

【实验结果/结论】

a) Check the zero of the measuring system.

【仪器/耗材清单】