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Material hardness testing in the ceramic industry

Views:0     Author:Site Editor     Publish Time: 2020-07-09      Origin:Site

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%

Picture 28

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

Picture 29 Picture 30 Picture 31

Test four test five

Picture 32 Picture 33

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.


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