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Product name: |
Scratch Tester SP11 |
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Mass: |
37,54 Kg |
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Supply: |
230V AC / 24V DC |
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Intender: |
Rockwell C diamond , R= 0,2mm |
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Table velocity: |
V= 4 - 150 mm/min variable |
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Optic: |
Zeiss Citoval stereo zoom microscope (N= 1-100x) |
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Sample dimension: |
15 x 20 x 3 mm |
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Min. nominal load: |
2 N |
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Max. nominal load: |
200 N |
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Options: |
Acoustic emission measurement by additional sensor |
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| Description: |
| The use of scratch testing method in order to evaluate the adhesion strength and intrinsic cohesion of hard and brittle coating on softer and tougher substrates is now well established. This method is considered as the most widely applicable adhesion strength test between layers. The scratch test can be used for both thin and thick films on metallic or ceramic substrate. During the test, diamond tip is drawn across the coating surface under a continuos or a stepwise increasing load until at some critical load the coating becomes detached from the substrate in a regural manner. The critical load (Lc) can be used as a measure of coating adhesion strength. |