New Cermet Powders for HVOF Spraying with Improved Corrosion and Oxidation Resistance for Offshore, Mining and Power Generation Applications
Authors: Dr. Benno Gries, Dipl.-Ing. Bernhard Brüning, Dr. Stefan Zimmermann
The present study describes the development of agglomerated and sintered WC and Cr3C2 based cermet powders with complex and highly corrosion resistant Fe and Ni matrix alloys. In addition a Fe-Cr-C with a Ni matrix was tested as a potential low cost alternative to standard Cr3C2-NiCr powders. The powders were sprayed by HVOF using liquid and gaseous fuel. Microstructure and phase composition of the coatings were analyzed by microscopy and X-ray diffraction. The technical properties of the coatings were examined by hardness measurements, abrasive wear and cavitation tests as well as corrosion tests. The results were compared with state-of-the-art coatings of WC-Co-Cr 86/10/4 and Cr3C2-NiCr 75/25.
Pages: 94 - 100
Order this article as a PDF for 8.00 Euro. Send us a short e-mail with your details.
An active subscription enables you to download articles or entire issues as PDF-files. If you already are a subscriber, please login. More information about the subscription
