Preliminary carburizing of medium-carbon steel as a factor increasing corrosion resistance of diffusion layers produced by means of vacuum chromizing process

Book · Sun Dec 31 00:00:00 EST 1995

OSTI ID:389769

Kasprzycka, E; Tacikowski, J ^[1]; Liliental, W ^[2]

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1. Inst. of Precision Mechanics, Warsaw (Poland)
2. Nitrex Metal Inc., Montreal, Quebec (Canada)

Diffusion layers produced on a steel surface by means of the vacuum chromizing process has been studied. The effect of preliminary carburizing of medium-carbon steel on a chromized layer structure and its corrosion resistance has been investigated. Studies of layer thickness, its morphology, the phase composition, and Cr and Fe depth profiles in the diffusion zone of chromized steel specimens in the aggressive media of the food industry has been determined. For corrosion resistance tests chromized layers of different structure have been used: two-phase layers (consisting of a carbide layer and a solution zone) produced on the medium-carbon steel, monophase carbide layers produced on the surface of preliminary carburized medium-carbon steel and monophase solution layers produced on Armco iron. It has been proved that the corrosion resistance of monophase hard carbide layers, as well as of monophase solution layers is higher than that for two-phase layers. The results obtained by the described method indicate that the preliminary carburizing of medium-carbon steel significantly increases corrosion resistance of diffusion layers produced by means of the vacuum chromizing process.

• OSTI ID: 389769
• Report Number(s): CONF-951222-; ISBN 0-87170-561-3; TRN: IM9646%%54
• Resource Relation: Conference: International conference on carburizing and nitriding with atmospheres, Cleveland, OH (United States), 6-8 Dec 1995; Other Information: PBD: 1995; Related Information: Is Part Of 1995 Carburizing and nitriding with atmospheres: Conference proceedings; Grosch, J. [ed.] [Technical Univ. of Berlin (Germany)]; Morral, J. [ed.] [Univ. of Connecticut, Storrs, CT (United States)]; Schneider, M. [ed.] [Timken Co., Inc., Canton, OH (United States)]; PB: 403 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON STEELS
CARBURIZATION
DIFFUSION COATING
MICROSTRUCTURE
CORROSION RESISTANCE
IRON
CHROMIUM STEELS
SURFACE TREATMENTS
LAYERS
DIFFUSION
CHROMIUM
CHROMIUM CARBIDES
METALLOGRAPHY
X-RAY DIFFRACTION
CITRIC ACID
SODIUM CHLORIDES
SODIUM HYDROXIDES
WEIGHT MEASUREMENT
EXPERIMENTAL DATA