Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Imaging defects in thin DLC coatings using high frequency scanning acoustic microscopy

 
: Fei, D.; Rebinsky, D.; Zinin, P.; Köhler, B.

Thompson, D.O. ; American Institute of Physics:
Review of progress in quantitative nondestructive evaluation. 23B : Green Bay, Wisconsin 27 July - 1 August 2003; the 30th Annual Review of Progress in Quantitative Nondestructive Evaluation
Melville, NY: AIP, 2004 (AIP conference proceedings 700)
ISBN: 0-7354-0173-X
pp.976-983
Annual Review of Progress in Quantitative Nondestructive Evaluation <30, 2003, Green Bay/Wis.>
English
Conference Paper
Fraunhofer IZFP, Institutsteil Dresden ( IKTS-MD) ()
ultrasonic; photoacoustic; acoustic force microscopy; thin film

Abstract
In this work high frequency scanning acoustic microscopy was employed to nondestructively characterize subsurface defects in chromium containing DLC (Cr-DLC) coatings. Subsurface defects as small as one micron were successfully detected in a flat Cr-DLC coated steel coupon. Depth of the imaged subsurface defects was estimated using a simple geometrical acoustics model. The nature of the subsurface defects was investigated by using FIB/SEM technique. Curved Cr-DLC coated components including a roller and gear tooth were also imaged, and the encountered challenges were addressed.

: http://publica.fraunhofer.de/documents/N-44823.html