碳纳米纤维/铝酸钙复合粉对陶瓷复合电阻性能的影响

doi:10.3969/j.issn.1001-1935.2026.05.008

耐火材料 ›› 2026, Vol. 60 ›› Issue (5): 415-421.DOI: 10.3969/j.issn.1001-1935.2026.05.008

碳纳米纤维/铝酸钙复合粉对陶瓷复合电阻性能的影响

钟振鑫¹⁾, 姚聪伟²⁾, 王云龙¹⁾, 朱锐锋¹⁾, 王佳一³⁾, 种小川³⁾, 肖国庆³⁾, 丁冬海³⁾

1)广东电网公司惠州供电局广东惠州 516003
2)广东电网公司电力科学研究院广东广州 510062
3)西安建筑科技大学材料科学与工程学院陕西西安 710055

收稿日期:2025-10-13 出版日期:2026-10-15 发布日期:2026-10-29
通讯作者: 丁冬海,男,1983年生,博士,教授。E-mail:dingdongxauat@163.com
作者简介:钟振鑫:男,1983年生,高级工程师。E-mail:13928378123@139.com
基金资助:
高压断路器用国产化合闸电阻研制与应用(031300KC23110008)。

Effect of carbon nanofiber/calcium aluminate composite powder on properties of ceramic composite resistors

Zhong Zhenxin, Yao Congwei, Wang Yunlong, Zhu Ruifeng, Wang Jiayi, Chong Xiaochuan, Xiao Guoqing, Ding Donghai

First author’s address:Huizhou Power Supply Bureau of Guangdong Power Grid Corporation,Huizhou 516003,Guangdong,China

Received:2025-10-13 Online:2026-10-15 Published:2026-10-29

摘要/Abstract

摘要： 针对传统碳系导电填料易团聚、分布不均匀,导致碳陶瓷复合导电材料力学性能与电性能劣化的问题,以预合成的碳纳米纤维/铝酸钙复合粉(CNFs/CAC)为导电填料,与铝矾土、高岭土、钾长石等陶瓷基体原料进行干法球磨混合,经造粒、等静压成型后,采用埋碳还原气氛烧结制备了碳纳米纤维增强的碳陶瓷复合电阻材料。系统研究了复合粉添加量(外加质量分数分别为0.5%、1.0%、1.5%和2.0%)对陶瓷电阻物相组成、显微结构、物理性能及电阻率的影响。结果显示:随着复合粉外加量的增加,材料的致密度和常温耐压强度降低,电阻率呈先增大后减小的趋势。复合粉外加量为1.5%(w)的试样碳元素分布最均匀,导电网络最完整,兼具良好的电阻稳定性和应用要求的力学性能,综合性能最优。

关键词: 碳复合导电陶瓷, 碳纳米纤维, 铝酸钙, 力学性能, 电阻率

Abstract: To address the problems that traditional carbon-based conductive fillers tend to agglomerate and distribute unevenly,resulting in the deterioration of mechanical and electrical properties of carbon-ceramic composite conductive materials,pre-synthesized carbon nanofiber/calcium aluminate composite powder (CNFs/CAC) was used as the conductive filler.It was dry ball milled and mixed with ceramic matrix materials including bauxite,kaolin,and potassium feldspar.After granulation and isostatic pressing,carbon nanofiber-reinforced carbon-ceramic composite resistor materials were fabricated by sintering in a carbon embedded reducing atmosphere.The effects of the composite powder addition (0.5%,1.0%,1.5%,and 2.0%,extra adding) on the phase composition,microstructure,physical properties and resistivity of the ceramic resistors were systematically investigated.The results show that with the increase of the composite powder addition,the density and cold compressive strength decrease,and the resistivity first increases and then decreases.The specimen with 1.5% composite powder exhibits the most uniform carbon distribution and the most complete conductive network,and possesses good resistance stability and mechanical properties meeting application requirements,which presents the optimal comprehensive performance.

Key words: carbon-composite conductive ceramics, carbon nanofiber, calcium aluminate, mechanical properties, resistivity

中图分类号:

TB332

钟振鑫, 姚聪伟, 王云龙, 朱锐锋, 王佳一, 种小川, 肖国庆, 丁冬海. 碳纳米纤维/铝酸钙复合粉对陶瓷复合电阻性能的影响[J]. 耐火材料, 2026, 60(5): 415-421.

Zhong Zhenxin, Yao Congwei, Wang Yunlong, Zhu Ruifeng, Wang Jiayi, Chong Xiaochuan, Xiao Guoqing, Ding Donghai. Effect of carbon nanofiber/calcium aluminate composite powder on properties of ceramic composite resistors[J]. Refractories, 2026, 60(5): 415-421.

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碳纳米纤维/铝酸钙复合粉对陶瓷复合电阻性能的影响

Effect of carbon nanofiber/calcium aluminate composite powder on properties of ceramic composite resistors

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