Title of article
Investigation of the electrochemical behaviour of WC–Co hardmetal with electrochemical and surface analytical methods
Author/Authors
Schnyder، نويسنده , , Bernhard and Stِssel-Sittig، نويسنده , , Caroline and Kِtz، نويسنده , , Rüdiger and Hochstrasser-Kurz، نويسنده , , Sabine and Virtanen، نويسنده , , Sannakaisa and Jaeggi، نويسنده , , Christian and Eichenberger، نويسنده , , Nicolas and Siegenthaler، نويسنده , , Hans، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2004
Pages
6
From page
1240
To page
1245
Abstract
The corrosion behaviour of WC–Co based hardmetal was investigated in different solutions (acidic, neutral, and alkaline solutions) utilizing different electrochemical and surface analytical methods. At open-circuit potential WC–Co based hardmetals show rather high dissolution rates in all types of electrolyte. An efficient corrosion inhibitor (Benzotriazole, C6H5N3) could be found for a borate buffer solution, pH = 8.4. In situ STM allows to image the dissolution and redeposition of the cobalt phase in 1 M NaClO4. Confirmation of this result was obtained by XPS.
Keywords
Electrochemical methods , X-ray photoelectron spectroscopy , Scanning tunneling microscopy , Cobalt , Corrosion , Tungsten , Carbides , Solid–liquid interfaces
Journal title
Surface Science
Serial Year
2004
Journal title
Surface Science
Record number
1682356
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