The cordierite-ferrites based infrared radiation composite materials were synthesized with Fe2O3, Mn O2, Cu O, Co2O3, and Mg2Al4Si5O18 powders as raw materials via microwave heating. The cordierite-ferrites based comp...The cordierite-ferrites based infrared radiation composite materials were synthesized with Fe2O3, Mn O2, Cu O, Co2O3, and Mg2Al4Si5O18 powders as raw materials via microwave heating. The cordierite-ferrites based composite ceramics could be obtained via microwave heating at 1173 K for 1 h or 1473 K for 10 min, respectively. The lower synthesis temperature or the shorter heating time results in the smaller grain size of the composite ceramics obtained by microwave heating. The interplanar distance of cordierite becomes greater after microwave heating, indicating that the doping effect of transitional metal oxides on the cordierite is more efficient in microwave heating. The infrared radiation composite ceramics synthesized by microwave heating at 1473 K for 1 h exhibit the maximum emissivity of 0.9 in the band range of 6-8 μm at 1073 K.展开更多
This book collects the writer's 28 proses of recalling his hometown,each from a uniquely personal view.With a simple style and true feelings,the writer recalled the interesting daily life which seems commonplace,d...This book collects the writer's 28 proses of recalling his hometown,each from a uniquely personal view.With a simple style and true feelings,the writer recalled the interesting daily life which seems commonplace,depicted a rural picture in the Central Plains full of human feelings of ordinary life,and described the daily life and experiences of rural people.展开更多
基金financially supported by the National Natural Science Foundation of China (No. 11074195)Technology Innovation Fund of Jiangsu Province (No. SBC201310656)Technology Innovation Fund of Zhangjiagang City (No. ZKC1205)
文摘The cordierite-ferrites based infrared radiation composite materials were synthesized with Fe2O3, Mn O2, Cu O, Co2O3, and Mg2Al4Si5O18 powders as raw materials via microwave heating. The cordierite-ferrites based composite ceramics could be obtained via microwave heating at 1173 K for 1 h or 1473 K for 10 min, respectively. The lower synthesis temperature or the shorter heating time results in the smaller grain size of the composite ceramics obtained by microwave heating. The interplanar distance of cordierite becomes greater after microwave heating, indicating that the doping effect of transitional metal oxides on the cordierite is more efficient in microwave heating. The infrared radiation composite ceramics synthesized by microwave heating at 1473 K for 1 h exhibit the maximum emissivity of 0.9 in the band range of 6-8 μm at 1073 K.
文摘This book collects the writer's 28 proses of recalling his hometown,each from a uniquely personal view.With a simple style and true feelings,the writer recalled the interesting daily life which seems commonplace,depicted a rural picture in the Central Plains full of human feelings of ordinary life,and described the daily life and experiences of rural people.
