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Zerstörungsfreie Prüfung von Nitrierschichten

Nondestructive testing of nitriding layers
 
: Altpeter, I.; Detemple, I.; Kern, R.; Kopp, M.; Huber-Gomman, U.; Rühe, S.

Härterei-Technische Mitteilungen : HTM 51 (1996), No.6, pp.386-389
ISSN: 0017-6583
ISSN: 0341-101X
ISSN: 1867-2493
German
Journal Article
Fraunhofer IZFP ()
coercivity; hardening depth; Härtetiefe; Koerzitivfeldstärke; magnetic Barkhausen noise; magnetisches Barkhausenrauschen; nitriding layer; Nitrierschicht; Oberflächenhärte; surface hardening

Abstract
According to DIN 50190 the depth of nitriding layers is determined destructively on samples which are added to the components to be nitrided. A nondestructive testing method is desired which monitors the quality of each component produced. During the last few years micromagnetic techniques have shown that a nondestructive testing of hardening depth and surface hardness is possible. A new micromagnetic testing approach is presented which allows a nondestructive determination of the nitrided layer thickness as well as an inspection of the white layer.

: http://publica.fraunhofer.de/documents/PX-42376.html