Corrosion resistance of chromium carbide coatings in oxygen-sulfur environments
Oxidation of metallic materials at elevated temperatures in bioxidant environments is a potential problem in many systems within the chemical, petroleum, and power-generating industries. The use of appropriate corrosion-resistant coatings on metallic components offers an avenue to minimize the material degradation and to extend the life of the component. The present paper discusses results obtained on the performance of chromium carbide and chromium coatings on a Type 310 stainless steel (SS) substrate exposed to oxidizing and sulfidizing gas mixtures. The coatings were developed by an electro-spark deposition (ESD) process in which duration, high-current electrical pulses were used to deposit the electrode material on the metallic substrate. This paper presents thermogravimetric test data, observations on the morphology of coating layers, and hardness depth profiles for coated and uncoated specimens after exposure to several gas mixtures at test temperatures of 875 and 650/sup 0/C.
- Research Organization:
- Argonne National Lab., IL (USA); Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6481368
- Report Number(s):
- CONF-870388-11; ON: DE87011496
- Resource Relation:
- Conference: 14. international conference on metallurgical coatings, San Diego, CA, USA, 23 Mar 1987; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHROMIUM
CORROSION RESISTANCE
CHROMIUM CARBIDES
STAINLESS STEEL-310
CORROSION PROTECTION
COATINGS
HARDNESS
OXIDATION
SCALING
SULFIDATION
THERMAL GRAVIMETRIC ANALYSIS
ALLOYS
CARBIDES
CARBON COMPOUNDS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTS
GRAVIMETRIC ANALYSIS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
QUANTITATIVE CHEMICAL ANALYSIS
STAINLESS STEELS
STEELS
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion