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Titolo:
The effect of rare earth catalyst on carburizing kinetics in a sealed quench furnace with endothermic atmosphere
Autore:
Yan, MF; Pan, W; Bell, T; Liu, ZR;
Indirizzi:
Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China Harbin Inst Technol Harbin Peoples R China 150001 50001, Peoples R China Shanghai Xinyue Apparatus Factory, Shanghai 200233, Peoples R China Shanghai Xinyue Apparatus Factory Shanghai Peoples R China 200233 China Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England
Titolo Testata:
APPLIED SURFACE SCIENCE
fascicolo: 1-2, volume: 173, anno: 2001,
pagine: 91 - 94
SICI:
0169-4332(20010322)173:1-2<91:TEOREC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-TEMPERATURE; SURFACE-LAYER; MICROSTRUCTURE;
Keywords:
rare earth; catalysis; endothermic atmosphere; carburizing; kinetics;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Yan, MF Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China Harbin Inst Technol Harbin Peoples R China 150001 eoples R China
Citazione:
M.F. Yan et al., "The effect of rare earth catalyst on carburizing kinetics in a sealed quench furnace with endothermic atmosphere", APPL SURF S, 173(1-2), 2001, pp. 91-94

Abstract

We study the effect of a rare earth (RE) catalyst on the kinetics of gas carburizing of 08F and 8620 steels. Carburizing was conducted in a sealed-quench furnace employing an endothermic atmosphere with and without RE addition at 900 degreesC for different times. These experimental results show that compared with conventional gas carburizing the incorporation of RE leads to an obvious increase in layer depth and carbon (C) concentration profile under the same carburizing condition. Cerium (Ce) existing in the carburizing atmosphere and diffusing into the surface layer does not change the kinetics law of carburized layer growth. In addition, the calculated results show that the reaction constant and the diffusion coefficient of carbon between the gas-solid interface can also be increased during RE carburizing. (C)2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 05/04/20 alle ore 07:11:09