Nondestructive quality assurance of PVD/CVD ceramic coated WC/Co cermets

Tatsuhiko Aizawa, Manabu Itoh, Junji Kihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


New method of nondestructive quality assurance was proposed and developed for ceramic coated tool materials like PVD/CVD TiN WC/Co cermets. Acoustic diagnosis on the basis of the acoustic spectro microscopy plays a main part of our developing method. Among various extended approaches in the acoustic diagnosis, this paper is concerning with the dispersion analysis of acoustic wave velocity for TiN coated WC/Co materials. Together with the elastic characterization of both WC/Co substrate and PVD/CVD coatings on their microstructural dependency of elastic properties, interfacial integrity was also investigated for TiN/TiC coated WC/Co. The Young's moduli of PVD/CVD TiN coating were estimated together with residual stress evaluation induced inside the coatings. The stress recovery was also quantitatively evaluated for heat treatment design of TiN-Ti(CN) coatings.

Original languageEnglish
Title of host publicationCeramic Coatings
EditorsM. Ramulu, R. Komanduri
PublisherPubl by ASME
Number of pages22
ISBN (Print)0791810216
Publication statusPublished - 1993 Dec 1
EventProceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA
Duration: 1993 Nov 281993 Dec 3

Publication series

NameAmerican Society of Mechanical Engineers, Materials Division (Publication) MD


OtherProceedings of the 1993 ASME Winter Annual Meeting
CityNew Orleans, LA, USA

ASJC Scopus subject areas

  • General Engineering


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