Study on absorbing properties of bamboo-like silicon carbide whiskers

doi:10.11949/0438-1157.20190962

CIESC Journal ›› 2020, Vol. 71 ›› Issue (4): 1889-1897.DOI: 10.11949/0438-1157.20190962

• Material science and engineering, nanotechnology • Previous Articles Next Articles

Study on absorbing properties of bamboo-like silicon carbide whiskers

Zhenzhen MENG¹(),Zhihong WU^1,²(),Xinwei LIU¹,Yao WANG¹,Haikang ZHENG¹,Yubin WANG³()

^1.College of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi，China
^2.State Key Laboratory of Advance Refractories, Sinosteel Luoyang Institute of Refractories Research Co. , Ltd. , Luoyang 471039, Henan, China
^3.School of Resources Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, Shaanxi, China

Received:2019-08-21 Revised:2019-11-27 Online:2020-04-05 Published:2020-04-05
Contact: Zhihong WU,Yubin WANG

竹节状碳化硅晶须吸波性能研究

蒙真真¹(),武志红^1,²(),刘新伟¹,王耀¹,郑海康¹,王宇斌³()

^1.西安建筑科技大学材料科学与工程学院，陕西西安 710055
^2.中钢集团洛阳耐火材料研究院有限公司，先进耐火材料国家重点实验室, 河南洛阳 471039
^3.西安建筑科技大学资源工程学院，陕西西安 710055

通讯作者: 武志红,王宇斌
作者简介:蒙真真（1996—），女，硕士研究生，1500697041@qq.com
基金资助:
国家自然科学基金项目(51974218);西安建筑科技大学基础研究基金项目(JC1496);先进耐火材料国家重点实验室开放基金项目(SKLAR201905)

Abstract

Abstract:

The use of electromagnetic wave absorbing materials to reduce the interference of electromagnetic waves on equipment and harm to the human body is one of the currently used electromagnetic wave protection methods. As a one-dimensional dielectric material, silicon carbide whiskers with specific structure have better absorption performance than ordinary whiskers, bulk materials and particle materials. It has become a hot topic in this area. In this study, bamboo-like silicon carbide whiskers were prepared from bamboo powder, silicon powder and silica by carbothermal reduction at different temperatures, then the structure and absorbing properties of bamboo-like whiskers were tested and analyzed. The sintered bamboo-shaped whiskers at 1400℃ have a minimum reflection loss of -14.4 dB and an effective absorption bandwidth of 1.8 GHz at a thickness of 3 mm and a frequency of 9.1 GHz. Its absorbing performance is the best and has further research value.

Key words: bamboo-like, silicon carbide whiskers, absorbing properties

摘要：

采用电磁波吸收材料来降低电磁波对设备的干扰及对人体的伤害，是目前常用的电磁波防护手段之一。特定结构碳化硅晶须作为一种一维介电材料，其优于普通的晶须、块状和颗粒状的吸波性能引起了研究人员的关注。本研究以生竹粉、硅粉和二氧化硅为原料，通过碳热还原法在不同温度下制备了竹节状碳化硅晶须，并对其结构和吸波性能进行了检测分析。结果表明：以1400℃烧结的竹节状晶须制备的试样在厚度为3 mm，频率为9.1 GHz时，最小反射损耗达到-14.4 dB，有效吸收带宽为1.8 GHz，吸波性能最好，具有进一步研究价值。

关键词: 竹节状, 碳化硅晶须, 吸波性能

CLC Number:

430.45

Zhenzhen MENG, Zhihong WU, Xinwei LIU, Yao WANG, Haikang ZHENG, Yubin WANG. Study on absorbing properties of bamboo-like silicon carbide whiskers[J]. CIESC Journal, 2020, 71(4): 1889-1897.

蒙真真, 武志红, 刘新伟, 王耀, 郑海康, 王宇斌. 竹节状碳化硅晶须吸波性能研究[J]. 化工学报, 2020, 71(4): 1889-1897.

Figures/Tables 14

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Study on absorbing properties of bamboo-like silicon carbide whiskers

竹节状碳化硅晶须吸波性能研究

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