Kinetics of Gas Carburizing of Zr–1%Nb Alloy

The kinetic characteristics of thin-sheet (approx. 1 mm) Zr–1%Nb alloy samples after treatment in a carbon-containing gas medium ( P Ar + C 3 H 8 = 0.106 Pa) in a wide temperature range of 650–850°C and time 1; 5 and 10 h were investigated. The carburizing of the alloy at temperatures of 650 and 750...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) Vol. 59; no. 5; pp. 623 - 629
Main Authors: Trush, V. S., Pohrelyuk, I. M., Lyk’yanenko, A. G., Kravchyshyn, T. M., Fedirko, V. M., Korendii, V. M., Kovalchuk, I. V.
Format: Journal Article
Language:English
Published: New York Springer US 01.03.2024
Springer
Springer Nature B.V
Subjects:
Activation energy
Alloys
Carbon
Characterization and Evaluation of Materials
Chemistry and Materials Science
Gas carburizing
Hardness
Materials Science
Microhardness
Niobium base alloys
Nuclear energy
Partial pressure
Solid Mechanics
Specialty metals industry
Structural Materials
Surface layers
Zirconium carbide
microstructure
carburizing
surface layer
crystal lattice parameters
microhardness
weight change kinetics
Zr–1%Nb alloy
ISSN:1068-820X, 1573-885X
Online Access:Get full text
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Summary:The kinetic characteristics of thin-sheet (approx. 1 mm) Zr–1%Nb alloy samples after treatment in a carbon-containing gas medium ( P Ar + C 3 H 8 = 0.106 Pa) in a wide temperature range of 650–850°C and time 1; 5 and 10 h were investigated. The carburizing of the alloy at temperatures of 650 and 750°C occurs according to a law close to linear ( n ≈ 1), and at 850°C according to a law close to parabolic ( n ≈ 2). The activation energy of the alloy carburizing in the temperature range of 650–850°C at the propane partial pressure p C 3 H 8 = 0.018 Pa was 2.21 kJ/mol. The distribution of microhardness and structure of the near-surface layers of the alloy was shown. The microstructure of the near-surface layers of the alloy after carburizing was determined. The α-Zr and ZrC phase content on the alloy surface after treatment in a carbon-containing gas environment is presented.
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ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-024-00819-1