Strength, Micro-Strength and Microstructure of Carbonaceous Materials
The effect of heat treatment at 700-1500℃ on the mechanical strength,micro strength and pore structure of carbonaceous materials,including coke,char and coals,were studied using tensile test,ultra micro indentation and image analysis.Upon the heating,strength of chars and laboratory chars was strongly enhanced by the heat treatment at temperature below 1100℃; strength of cokes was slightly degraded after heat treatment at 1500℃.Mechanical strength of carbonaceous materials was demonstrated to be significantly affected by micro strength and porosity.Micro strength of chars and coals was significantly enhanced by heat treatment,whereas micro strength of cokes was only marginally increased by heat treatment.The major growth in the micro strength of chars and coals took place at annealing temperature below1100℃.Porosity of chars and coals significantly increased in the annealing at temperature below 1100℃.Further increasing annealing temperature from 1100-1500℃ caused marginal porosity evolution in coals and chars.Porosity of cokes increased slightly in the temperature range of 1300-1500℃.
carbonaceous materials heat treatment mechanical strength micro strength pore structure
Xing Xing Zhang Guangqing Ostrovski Oleg
School of Materials Science and Engineering, the University of New South Wales, Sydney, NSW 2052, Au School of Mechanical, Materials & Mechatronic Engineering, University of Wollongong, Wollongong, NSW
国际会议
The 4th Australia-China-Japan Joint Symposium on Iron and Steelmaking(第四届中日澳钢铁冶金学术会议)
沈阳
英文
55-62
2012-11-03（万方平台首次上网日期，不代表论文的发表时间）