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Evaluation of adhesion/cohesion bond strength of the thick plasma spray coatings by scratch testing on coatings cross-sections |
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| Authors: | Aleksandar Vencl Saioa Arostegui |
| Affiliation: | a Mechanical Engineering Faculty, University of Belgrade, Kraljice Marije 16, 11120 Belgrade 35, Serbia b CSM Instruments SA, Rue de la Gare 4, CH-2034 Peseux, Switzerland c Mechanical Engineering Faculty, University of Kragujevac, Sestre Janji? 6, 34000 Kragujevac, Serbia d IMTEL Microwaves Inc., Bulevar Mihaila Pupina 165b, 11070 Belgrade, Serbia |
| Abstract: | The possibility of adhesion/cohesion bond strength evaluation of thick plasma spray coatings with scratch tester, according to the ISO working draft (ISO/WD 27307), was analyzed and compared with the standard test method (ASTM C 633). Four different coatings deposited with atmospheric plasma spraying were used. The results showed that scratch testing could be used as an efficient method for evaluation of thick plasma spray coatings cohesion. It is a relatively easy and quick test method, and for practical application it could be also used as a supplement of some standard test method as a coating characterization and quality control technique. |
| Keywords: | Plasma spray coating Bond strength Scratch test Tensile test |
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