Menu
Search
Filters
Close
Menu

02180 CORROSION MECHANISMS AND ELECTROCHEMICAL BEHAVIOUR OF THERMAL SPRAY COATINGS (WC-Cr-Ni AND WCCrC)

Picture for 02180 CORROSION MECHANISMS AND ELECTROCHEMICAL...
Available for download
Product Number: 51300-02180-SG
ISBN: 02180 2002 CP
Author: V A D Souza and A Neville
$0.00
$20.00
$20.00
In this experimental study the corrosion characteristics (rates and mechanisms) of two thermally-sprayed cermet coatings have been examined in a static saline environment (synthetic seawater). The coatings have complex microstructures where the ceramic hard-phase constituents are embedded in a metallic matrix. Their electrochemical response during accelerated corrosion DC polarisation tests reflects this complexity. The test protocol has enabled the mechanisms of corrosion occurring on the WC/CrC cermet and the WC-Cr-Ni cermet to be compared and contrasted. A 'critical' temperature has been defined for the WC-Cr-Ni coating similar to the critical pitting temperature (CPT) for stainless steels. Electrochemical behavior, which can not be simply described as truly 'passive' behavior, is displayed by the WC/CrC coating and such a well-defined 'critical' temperature is not apparent. The contrasting mechanisms of corrosion, identified during post-test examination, can be correlated to the contrasting electrochemical response. Keywords: corrosion, thermal spray, coating, cermet, electrochemistry.
In this experimental study the corrosion characteristics (rates and mechanisms) of two thermally-sprayed cermet coatings have been examined in a static saline environment (synthetic seawater). The coatings have complex microstructures where the ceramic hard-phase constituents are embedded in a metallic matrix. Their electrochemical response during accelerated corrosion DC polarisation tests reflects this complexity. The test protocol has enabled the mechanisms of corrosion occurring on the WC/CrC cermet and the WC-Cr-Ni cermet to be compared and contrasted. A 'critical' temperature has been defined for the WC-Cr-Ni coating similar to the critical pitting temperature (CPT) for stainless steels. Electrochemical behavior, which can not be simply described as truly 'passive' behavior, is displayed by the WC/CrC coating and such a well-defined 'critical' temperature is not apparent. The contrasting mechanisms of corrosion, identified during post-test examination, can be correlated to the contrasting electrochemical response. Keywords: corrosion, thermal spray, coating, cermet, electrochemistry.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 99616 Thermal Spray Aluminium Past, Present
Available for download

99616 Thermal Spray Aluminium Past, Present and Future

Product Number: 51300-99616-SG
ISBN: 99616 1999 CP
Author: T Rosbrook, Dr M.A.M. Swidzinski, C.J. Houghton
$20.00
Picture for 01169 CORROSION RESISTANCE OF THERMAL SPRAY
Available for download

01169 CORROSION RESISTANCE OF THERMAL SPRAY COATINGS IN A FLUID CATALYTIC CRACKING UNIT

Product Number: 51300-01169-SG
ISBN: 01169 2001 CP
Author: M. Piza Paes, C.Zeng, I.Caminha, F.Rizzo, M. Monteiro & M.F. Lopes
$20.00
Picture for 04022 Experiences on Thermal Spray Aluminum
Available for download

04022 Experiences on Thermal Spray Aluminum (TSA) Coating for Offshore Structures

Product Number: 51300-04022-SG
ISBN: 04022 2004 CP
Author: Desmond K.K. Tiong, Shell International; Halimah Pit, Sarawak Shell Berhad
Publication Date: 2004
$20.00

Since 1982, there has been a move to Thermal Sprayed Aluminum (TSA) coating in the “splash zone” of offshore structures.  Our experience indicates that an experience applicator, good surface preparation and quality of wire combined to achieve required thickness and apply the sealer to seal the entire surface.

 
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support