A Self-propagating high-temperature synthesis process for the fabrication of Fe（Cr）–Al2O3nanocomposite

论文摘要

Self-propagating high-temperature synthesis（SHS） was used to fabricate a Fe（Cr）–Al2O3 nanocomposite. The composite was fabricated by the reactions between the powders of Fe, Fe2O3, Cr2O3, and Al. The effect of blending ratio and mechanical activation of the initial powders and the precursor compressing pressure on the microstructure of the final product was studied by optical microscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The significance of the effect of each of the aforementioned parameters on the quality of the composite（assessed by measuring the compressive strength and wear resistance） was determined using a full-factorial design of experiments method. The results showed that the best molar powder ratio that produced the most homogeneous product through a sustainable SHS reaction was Fe:Fe2O3:Cr2O3:Al = 10:1:1:4. A lower Fe content caused the Fe（Cr） phase to melt and separate from the rest of the materials.

论文目录

• 1. Introduction
• 2. Experimental
• 3. Results and discussion
•   3.1. Effect of the blending ratio of the initial powders
•   3.2. Effect of mechanical activation of the powder mixture
•   3.3. Effect of precursor compacting pressure
•   3.4. Statistical analysis of the effect of the process pa-rameters
• 4. Conclusions

文章来源

类型: 期刊论文

作者: Seyed Esmaiel Shakib,Ramin Raiszadeh,Jalil Vahdati-Khaki

来源: International Journal of Minerals Metallurgy and Materials 2019年06期

年度: 2019

分类: 工程科技Ⅱ辑,工程科技Ⅰ辑

专业: 材料科学

单位: Department of Metallurgy and Materials Science, School of Engineering, Shahid Bahonar University of Kerman,Department of Materials Science and Metallurgical Engineering, Engineering Faculty, Ferdowsi University of Mashhad

分类号: TB33

页码: 775-786

总页数: 12

文件大小: 943K

下载量: 21