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Scratch Test
CSM Scratch Testers are dedicated instruments for characterizing the surface mechanical properties of thin films and coatings, e.g. adhesion, fracture and deformation. The scratch tester's ability to characterize the film-substrate system and to quantify parameters such as friction and adhesive strength, using a variety of complementary methods, makes it an invaluable tool for research, development and quality control.
This technique involves generating a controlled scratch with a sharp tip on a selected area. The tip material (commonly diamond or hard metal (WC)) is drawn across the coated surface under constant, incremental or progressive load.
At a certain critical load the coating will start to fail. The critical loads are very precisely detected by means of an acoustic sensor (MST & RST) attached to the load arm but can also be confirmed and collated with observations from a built-in optical microscope. The critical load data is used to quantify the adhesive properties of different film - substrate combinations.
In addition to acoustic emission, the Scratch Testers measure the applied normal force, the tangential (friction) force and the penetration depth. These parameters, together with the acoustic emission data, provide the mechanical signature of the coating system.
//// Features of the Scratch Testers
> Proven method to quantify adhesion of coatings
> Acoustic emission, friction, penetration depth and optical observation
> Feedback control of normal force
> Patented panorama image
> Multi Focus image and panorama
> Characterization of large (300mm) samples
> Wear testing in multipass mode
> Automated video microscope inspection
> Automated, unattended multi sample testing
> ISO and ASTM compliant
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Related documents
| Scratch Catalog | |
| Application Bulletin n°39 |
In-situ observation of the scratch/indentation true contact area to provide analysis without being model-dependent |
| Application Bulletin n°38 |
Physical characterization of coated surfaces - Part II : Scratch Test |
| Application Bulletin n°37 |
Physical characterization of coated surfaces - Part I : Instrumented Indentation |
| Application Bulletin n°34 |
Characterization of the scratch resistance of ceramic tiles |
| Application Bulletin n°33 |
Applications of the ConScan Surface Profilometer |
| Application Bulletin n°32 |
Characterization of thermal spray coatings by instrumented indentation and scratch testing Part II: Indentation of plasma sprayed coatings |
| Application Bulletin n°30 |
Nanoindentation and Nanoscratch of Oxide Coatings on Thin Film Polymer Substrates Measurement of Acoustic Emission during Microindentation |
| Application Bulletin n°28 |
Characterization of thermal spray coatings by instrumented indentation and scratch testing: Part l |
| Application Bulletin n°27 |
Mechanical properties of ultrananocrystalline diamond (UNCD) films with an influence of the nucleation density on the structure |
| Application Bulletin n°26 |
The Influence of the Rockwell Indenter Tip Geometry on the Progressive Load Scratch Test |
| Application Bulletin n°25 |
Influence of indenter tip radius on the scratch resistance of an automotive clearcoat |
| Application Bulletin n°18 |
Indentation, Tribology and Scratch Test Standards |
| Application Bulletin n°16 |
- Automotive Applications |
| Application Bulletin n°15 |
- Characterization of Polymers |
| Application Bulletin n°14 |
- Measurement of hardness as a function of depth in nitrided 316L stainless steel |
| Application Bulletin n°13 |
- Influence of tip size on the critical load during scratch testing with the Micro Scratch Tester |
| Application Bulletin n°12 |
- Micro-Electronic Applications |
| Application Bulletin n°11 |
- Nanoindentation with spherical indenters for characterization of stress-strain properties |
| Application Bulletin n°09 |
- MST Swinging Module for variable frequency scratch testing |
| Application Bulletin n°08 |
- New Industrial Calotest for improved coating thickness determination |
| Application Bulletin n°07 |
- Forthcoming Nano Scratch Tester (NST) for characterization of ultra-thin films |
| Application Bulletin n°06 |
- Micro Scratch Tester (MST) for assessing the scratch resistance of SiO2 passivation layers |
| Application Bulletin n°04 |
- Modified Pin-on-Disc Tribometer for controlled lubricant studies |
| Application Bulletin n°03 |
- New integrated SFM objective for better characterization of NHT indentations |
| Application Bulletin n°01 |
- New Nano-Hardness Tester (NHT) for characterization of MoS2 thin films |
