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Electromagnetic properties of high-carbon ferrochrome powders decarburized in solid phase by microwave heating

机译：微波加热固相脱碳的高碳铬铁粉的电磁性能

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摘要

During solid-phase decarburization, the changes of the electromagnetic properties can reflect the variation degree of material components. High-carbon ferrochrome powders (HCFCP) with addition of CaCO_3 were decarburized in solid phase by microwave heating and the electromagnetic properties of the decarburized materials were investigated. With increasing in heating temperature from 1173 to 1473 K, the relative permittivity of the decarburized materials increases initially and then decreases, whereas the relative permeability exhibits an opposite change trend. As holding time ranges from 40 to 60 min at 1273 K, the relative permittivity and dielectric loss factor tend to decrease while the relative permeability and magnetic loss factor tend to increase, corresponding to the maximum mean velocity of decarburization. In microwave fields, electromagnetic properties of the decarburized materials principally vary with carbon content, C-vacancies and crystal structure, and their changes in turn affect the interaction of microwaves with the decarburized materials.
机译：在固相脱碳过程中，电磁性能的变化可以反映出材料成分的变化程度。添加了CaCO_3的高碳铬铁粉（HCFCP）通过微波加热在固相中脱碳，并研究了脱碳材料的电磁性能。随着加热温度从1173 K升高到1473 K，脱碳材料的相对介电常数先增大然后减小，而相对磁导率则呈现相反的变化趋势。当在1273 K下保持时间介于40至60分钟之间时，相对介电常数和介电损耗因子趋于减小，而相对磁导率和磁损耗因子趋于增大，这对应于脱碳的最大平均速度。在微波场中，脱碳材料的电磁特性主要随碳含量，C空位和晶体结构而变化，并且它们的变化反过来影响微波与脱碳材料的相互作用。

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  • 来源
    《Materials Science and Engineering》 |2014年第11期|58-63|共6页
  • 作者

    Wei Li; Jin Chen; Lina Guo; Jiujiu Hao; Peide Han; Jinying Liu;

  • 作者单位

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;

    The 12th Institute of China Electronics Technology Group Corporation, Beijing 100016, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Microwave heating; High-carbon ferrochrome powders (HCFCP); Solid-phase decarburization; Electromagnetic properties;

    机译：微波加热;高碳铬铁粉（HCFCP）;固相脱碳;电磁特性;

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