Effects of Annealing on Microstructure and Microstrength of Metallurgical Coke

被引：40

作者：

Xing, Xing ^{[1
]}

Zhang, Guangqing ^{[2
]}

Rogers, Harold ^{[3
]}

Zulli, Paul ^{[3
]}

Ostrovski, Oleg ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

[2] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[3] BlueScope Steel, Port Kembla, NSW 2505, Australia

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2014年 / 45卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

RAMAN-SPECTROSCOPY; MECHANICAL-PROPERTIES; CARBON STRUCTURE; CHAR STRUCTURE; STRENGTH; TEMPERATURES; SCATTERING; EVOLUTION; COALS;

D O I：

10.1007/s11663-013-0002-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two metallurgical cokes were heat treated at 1673 K to 2273 K (1400 A degrees C to 2000 A degrees C) in a nitrogen atmosphere. The effect of heat treatment on the microstructure and microstrength of metallurgical cokes was characterized using X-ray diffraction, Raman spectroscopy, and ultra-microindentation. In the process of heat treatment, the microstructure of the metallurgical cokes transformed toward the graphite structure. Raman spectroscopy of reactive maceral-derived component (RMDC) and inert maceral-derived component (IMDC) indicated that the graphitisation degree of the RMDC was slightly lower than that of the IMDC in the original cokes; however graphitisation of the RMDC progressed faster than that of the IMDC during annealing, and became significantly higher after annealing at 2273 K (2000 A degrees C). The microstrength of cokes was significantly degraded in the process of heat treatment. The microstrength of the RMDC was lower, and of its deterioration caused by heat treatment was more severe than IMDC. The degradation of the microstrength of cokes was attributed to their increased graphitisation degree during the heat treatment.

引用

页码：106 / 112

页数：7

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