[1]王伟象,宋大钊,何学秋,等.煤微表面形貌和电势特征及其对电磁辐射的影响[J].西安科技大学学报,2020,(03):424-433.[doi:10.13800/j.cnki.xakjdxxb.2020.0307]
 WANG Wei-xiang,SONG Da-zhao,HE Xue-qiu,et al.Characteristics of the microsurface morphology and the surface potential of coal and their influence on electromagnetic radiation[J].Journal of Xi'an University of Science and Technology,2020,(03):424-433.[doi:10.13800/j.cnki.xakjdxxb.2020.0307]
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煤微表面形貌和电势特征及其对电磁辐射的影响(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2020年03期
页码:
424-433
栏目:
出版日期:
2020-05-15

文章信息/Info

Title:
Characteristics of the microsurface morphology and the surface potential of coal and their influence on electromagnetic radiation
文章编号:
1672-9315(2020)03-0424-10
作者:
王伟象1宋大钊1何学秋1邱黎明1娄 全2郭海峰1
(1.北京科技大学 土木与资源工程学院,北京 100083; 2.河南城建学院 市政与环境工程学院,河南 平顶山 467036)
Author(s):
WANG Wei-xiang1SONG Da-zhao1HE Xue-qiu1QIU li-ming1LOU Quan2GUO Hai-feng1
(1.School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China; 2.School of Municipal and Environmental Engineering,Henan University of Urban Construction,Pingdingshan 467036,China)
关键词:
原子力显微镜 纳米尺度 表面形貌 表面电势 电磁辐射
Keywords:
coal AFM nanoscale surface morphology surface potential electromagnetic radiation
分类号:
TD 713
DOI:
10.13800/j.cnki.xakjdxxb.2020.0307
文献标志码:
A
摘要:
为研究煤的纳米尺度表面形貌和电势特征及其对电磁辐射的影响,利用原子力显微镜测试了煤的纳米尺度表面形貌和表面电势。首先,研究了微表面形貌特征和几何形态,拟合得到其特征方程,并建立了微表面形貌的3维仿真模型; 其次,分析了微表面电势特征及其与微表面形貌的相关性; 最后,结合微表面形貌仿真模型与表面电势特征,简述了电子在类平行板电容器中运动产生多频电磁辐射的机理。结果表明:煤微表面高低起伏范围约在-15.7~15.3 nm,存在许多粒状凸起和不规则形状的凹陷; 微表面形貌几何形态的特征方程为y=-0.008 4x2; 微表面电势分布范围为-80.3~82.2 mV,分布较离散、随机,其统计规律符合正态分布的特征; 纳米尺度表面形貌与电势具有负的微弱相关关系。将煤纳米尺度微表面形貌和电势作为研究电磁辐射机理的重要因素,为进一步探究煤岩破裂电磁辐射机理提供了新的思路。
Abstract:
In order to study the characteristics of surface morphology andsurfacepotential of coal and their influence on electromagnetic radiation,we tested the surface morphology and surface potential at the nanoscale by atomic force microscope(AFM).Firstly,the characteristics and the geometric morphology of surface morphology were analyzed.The characteristic equation of geometric morphology was obtained,and a 3D idealized model of nanoscale surface morphology was established.Secondly,the characteristics of surface potential were analyzed,and the correlation between surface morphology and surface potential was studied.Finally,the mechanism of multi-frequency electromagnetic radiation generated by electron movement in parallel-plate capacitor was briefly described based on these experimental results.The results show that the height sensor of surface morphology ranges from -15.7 nm to 15.3 nm,and there are many granular bulges and irregular depressions.The characteristic equation of the geometric morphology is y=-0.008 4 x2.The surface potential in the test areas is -80.3~82.2 mV,the distribution of which is discrete and random.Its statistical rule conforms to the characteristics of Gaussian distribution,and there is a weak negative correlation between surface morphology and surface potential.In this study,the surface morphology and the surface potential induced by coal are taken as important factors to study the mechanism of electromagnetic radiation,which provides a new idea to further explore the mechanism of electromagnetic radiation of coal or rock fracture.

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备注/Memo

备注/Memo:
收稿日期:2020-01-30 责任编辑:杨泉林
基金项目:国家自然科学基金(51774023,51904019); 中国博士后科学基金(2018M641201)
通信作者:宋大钊(1985-),男,山东滨州人,博士,副教授,E-mail:song.dz@163.com
更新日期/Last Update: 2020-05-15