How metallographic preparation affects the microstructure of WC/Co thermal spray coatings
Conference
·
OSTI ID:160533
- Struers, Westlake, OH (United States)
Variations in the metallographic preparation of coatings such as WC/Co can have a significant effect on the resulting microstructure. The main area of concern is the variation of apparent void content (AVC) or porosity. Improper preparation technique will often result in smearing which can mask much of the inherent AVC. Vacuum impregnation of the specimens with an epoxy/fluorescence dye combination makes it possible to differentiate AVC from preparation artifacts. Specimens mounted using this method showed less sensitivity to polishing techniques than those mounted by conventional hot-compression methods. Therefore, it is recommended to vacuum impregnate all specimens that are prone to smearing. Once the true structure of the specimen has been determined, alternate mounting and polishing methods may be implemented as long as the resulting microstructure matches that of the impregnated specimen.
- OSTI ID:
- 160533
- Report Number(s):
- CONF-940684--; ISBN 0-87170-509-5
- Country of Publication:
- United States
- Language:
- English
Similar Records
A comparison of techniques for the metallographic preparation of thermal sprayed samples
Production method for the vacuum impregnation of a large number of metallographic specimens
Metallographic preparation techniques for ceramic materials
Conference
·
Wed Sep 01 00:00:00 EDT 1993
· Journal of Thermal Spray Technology
·
OSTI ID:5563620
Production method for the vacuum impregnation of a large number of metallographic specimens
Conference
·
Wed Dec 31 23:00:00 EST 1975
·
OSTI ID:7337846
Metallographic preparation techniques for ceramic materials
Conference
·
Mon Oct 01 00:00:00 EDT 1990
·
OSTI ID:6335430