传统烧结和微波烧结铁矿石预制件的特性

Characteristics of Conventional and Microwave Sintered Iron Ore Preform.

作者信息

Equbal Azhar, Ali Mohammad, Equbal Md Asif, Srivastava S C, Khan Zahid A, Equbal Md Israr, Badruddin Irfan Anjum, El-Hady Khalid Mohamed, Kamangar Sarfaraz

机构信息

Department of Mechanical Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia (A Central University), New Delhi 110025, India.

Department of Production Engineering, Birla Institute of Technology, Ranchi 835215, India.

出版信息

Materials (Basel). 2022 Apr 4;15(7):2655. doi: 10.3390/ma15072655.

DOI:10.3390/ma15072655

PMID:35407987

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9000582/

Abstract

In this study, compacted hematite (FeO) preforms were made and sintered at various temperatures, such as 1250 °C and 1300 °C, using both conventional and microwave sintering methods. The density, porosity, microhardness, cold crushing strength, microphotographs, and X-ray diffraction (XRD) analysis of the sintered preforms were used to evaluate the performance of the two sintering methods. It was found that microwave sintered preforms possessed lesser porosity and higher density than conventionally sintered preforms owing to uniform heating of the powdered ore in microwave sintering method. Furthermore, it was also observed that microwave sintered preforms exhibited relatively higher cold crushing strength and hardness than conventionally sintered preforms. Thus, the overall results revealed that microwave sintering yielded better properties considered in the present study.

摘要

在本研究中，采用传统烧结方法和微波烧结方法制作了压实赤铁矿（FeO）预制件，并在1250℃和1300℃等不同温度下进行烧结。通过对烧结预制件的密度、孔隙率、显微硬度、冷压强度、显微照片以及X射线衍射（XRD）分析来评估这两种烧结方法的性能。结果发现，由于微波烧结法中粉末状矿石受热均匀，微波烧结预制件的孔隙率比传统烧结预制件小，密度更高。此外，还观察到微波烧结预制件比传统烧结预制件表现出相对更高的冷压强度和硬度。因此，总体结果表明，在本研究中考虑的性能方面，微波烧结产生了更好的性能。