Material hardness testing in the ceramic industry

1) Sample: ceramic material sent by the customer

2) Requirements: The Vickers hardness value HV value and Rockwell hardness value HRC value of the test material

3) Test equipment and environment

This test uses the digital microscopic Vickers hardness tester DVS-1AT-8P from Ebipro. Before the test, the machine tested the standard hardness block 745HV0.5, and the average value of the five tests was 742HV0.5, which proved that the accuracy of the machine was within the allowable error range of the national standard and the normal test could be carried out. Laboratory test temperature: 25℃, humidity 35%

Digital Vickers Hardness Tester DVS-1AT-8P

4) Test data

Test the five points on the sample, and the results are as follows:

machine type	Testing frequency	Test force	Dwell time	D1	D2	HV hardness value	HRC hardness value
DVS-1AT-8P	1	0.5kgf	5 seconds	99.282	98.597	947.17	67.67
	2	0.5kgf	5 seconds	98.597	98.597	953.76	67.85
	3	0.5kgf	5 seconds	99.282	97.912	953.76	67.85
	4	0.5kgf	5 seconds	99.282	99.282	940.64	67.49
	5	0.5kgf	5 seconds	97.228	99.282	960.41	68.04

DVS-1AT-8P digital micro hardness tester test indentation pictures are as follows:

Test one test two test three

Test four test five

5) Data analysis:

average value	Max	Minimum	Very bad	Dispersion
951.15	960.41	940.64	19.77	2.08%

Ceramic materials are harder and more brittle. If the test force is too small for testing, the indentation is too small and the hardness value cannot be accurately measured; when the test force is too large, the material may be easily broken. It is recommended to carry out the test from a small test force until a clearer indentation picture is obtained and the material is not broken.

6) Summary:

The ceramic material is brittle, and the Rockwell hardness tester directly measures the material because the test force is too large. The micro Vickers hardness tester has a small test force (10gf-1000gf), which can get a clearer indentation picture under the premise of ensuring that the material is not broken. The machine has an automatic hardness conversion function, which can directly obtain the Rockwell hardness value. It is recommended to buy our DVS-1AT-8P digital micro-hardness tester to test your products.