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电熔氧化锆在微波场中的吸波特性和升温行为
  • 期刊名称：中南大学学报(自然科学版)
  • 时间：0
  • 页码：915-920
  • 语言：中文
  • 分类：TG146.4[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构：[1]昆明理工大学材料与冶金工程学院,云南昆明650093
  • 相关基金：国家自然科学基金重点资助项目（50734007）;云南省自然科学基金资助项目（2007E029M）
  • 相关项目：新型微波冶金高温反应器关键共性问题及应用基础研究
作者： 彭金辉|
关键词： 微波, 电熔氧化锆, 吸波特性, 升温行为, microwave, fused zirconia, microwave-absorbing characteristics, temperature rise behavior
中文摘要：

研究以电熔法制备的电熔氧化锆在微波场中的吸波特性及其复介电常数与微波频率的关系,测定电熔氧化锆在微波场中的升温曲线,采用微波谐振腔法测定电熔氧化锆的吸波特性,利用X射线衍射仪和扫描电镜研究微波加热的电熔氧化锆相组成和微观结构。研究结果表明：电熔氧化锆具有良好的吸波特性,在微波输出功率为3kW的条件下能以368.75℃/min的平均升温速率快速升温,在2.45GHz频率下其介质损耗因数为1.112,电熔氧化锆晶体中存在的晶体缺陷、晶格畸变和氧空位对加强微波的吸收有较大的作用。

英文摘要：

The raw material of fused zirconia was prepared by melting method in electric arc furnace （EAF）, the microwave-absorbing characteristics of fused zirconia in microwave field and the relationships between the microwave frequency and microwave absorbing of fused zirconia were studied, and the temperature curve of fused zirconia heated by microwave was measured. The phase composition and the microstructure of fused zirconia in microwave field were characterized by scanning electron microscope and X-ray diffractrometry. The results indicate that the fused zirconia has good microwave absorption ability. The permittivity of fused zirconia at frequency of 2.45 GHz is 1.112. The average temperature rising velocity is 368.75 ℃/min when microwave output power is 3 kW. The tape of solid-solution of fused zirconia is confirmed through calculating. The crystal defects, lattice distortion and the oxygen vacancy of fused zirconia can enhance its microwave-absorbing characteristics.

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