NDT.net - September 2002, Vol. 7 No.09

Adherence of nitride coatings analysed by acoustic emission signals coming from scratch tests

Rosa Piotrkowski,
Universidad Nacional General San Martםn, Buenos Aires, Argentina
Antolino Gallego,
Departamento de Fםsica Aplicada. Escuela Universitaria de Arquitectura Tיcnica, Universidad de Granada, Spain
Josי Ruzzante
Comisiףn Nacional de la Energםa Atףmica, Buenos Aires, Argentina
Marםa-Teresa Garcםa-Hernבndez
Departamento de Fםsica, Escuela Politיcnica Superior, Universidad de Jaיn, Spain
Corresponding Author Contact:
Email: lopezpum@cnea.gov.ar, Web: www.cnea.gov.ar/cac/endye/glea.htm

Summary

1. INTRODUCTION

2. THE ACOUSTIC EMISSION TECHNIQUE

3. DESCRIPCTION OF THE FILMS

4. THE SCRATCH-TEST EXPERIMENTAL METHOD

5. EXPERIMENTAL RESULTS: OBSERVATION USING MICROSCOPY

6. EXPERIMENTAL RESULTS: AE PATTERNS FOR A DUCTILE FILM (TiN)

7. EXPERIMENTAL RESULTS: AE PATTERNS FOR BRITTLE FILM (CrN)

8. TOTAL RESULTS

9. CONCLUSIONS

Acknowledgments

References

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  2. C.B. Scruby, "Introduction to Acoustic Emission", C.B. Scruby, J. Phys, E: Sci. Instrum, pp. 20-94 (1987).
  3. R. Piotrkowski, G. A. Hirchoren, M.P. Gףmez, C.E, D'Attellis, y J.E. Ruzzante "Acoustic emission signals from a coating breakdown, 1/f processes and wavelet analysis", , Actas de Primer Encuentro Latino-Americano de Emisiףn Acתstica, E-GLEA 1, 6-10 Setiembre 1999. p.p. 177-188.
  4. A. Gallego, R. Piotrkowski, J. Ruzzante, A. Cabo, MT Garcםa-Hernבndez and E. Castro, "Acoustic emisiףn technique to assess microfractures of metalic coatings with scratch-tests". Forum Acusticum Conference, Sevilla (Spain), September 2002.
  5. D. Dalmas, S. Benmedakhene, C. Richard, A. Laksimi, G. Bיgenger and T. Grיgoire, "Caractיrisation par יmission acoustique de l’adhיrence et de l’endommagement d’un revetement: cas d’un revetement WC-Co sur acier", C.R. Acad. Sci. Paris, Chimie/Chemistry 4 (2001), pp. 345-350.
  6. Y. Garchon and C. Hיnau, "Study of mechanical behaviour of diamond-like carbon coatings by several instrumented tribometers", Thin Solid Films 377-378 (2000), pp-360-365.
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