用激光粒度仪测量燃烧合成的氮化硅粉体粒度的条件

doi:10.12034/j.issn.1009-606X.217111

过程工程学报 ›› 2017, Vol. 17 ›› Issue (5): 971-975.DOI: 10.12034/j.issn.1009-606X.217111

用激光粒度仪测量燃烧合成的氮化硅粉体粒度的条件

刘鹏飞¹，程路伟¹，许宝松¹，李梦醒¹，韩召^1,2*

1. 安徽工业大学冶金工程学院，安徽马鞍山 243002；2. 安徽工业大学冶金减排与资源综合利用教育部重点实验室，安徽马鞍山 243002

收稿日期:2017-01-12 修回日期:2017-03-28 出版日期:2017-10-20 发布日期:2017-10-10
通讯作者: 韩召 authan@163.com
基金资助:
国家自然科学基金

Measurement Conditions of Particle Size of Combustion Synthesis Silicon Nitride Using Laser Particle Size Analyzer

Pengfei LIU¹, Luwei CHENG¹, Baosong XU¹, Mengxing LI¹, Zhao HAN^1,2*

1. School of Metallurgy Engineering, Anhui University of Technology, Ma?anshan, Anhui 243002, China;
2. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Anhui University of Technology, Ma?anshan, Anhui 243002, China

Received:2017-01-12 Revised:2017-03-28 Online:2017-10-20 Published:2017-10-10

摘要/Abstract

摘要： 以硅粉为主要原料，采用燃烧合成法制备微米级Si3N4粉体，以中粒径d50和粒径分布宽度d90?d10作为粒度评价指标，采用激光粒度仪研究了悬浊液固含量、超声分散时间、分散剂含量及沉降时间对粒度测量的影响. 结果表明，激光粒度仪可用于检测燃烧合成的Si3N4粉的粒度分布，悬浊液固含量、超声分散时间、分散剂含量及沉降时间对粒度测量结果影响显著. 水为分散介质时，最佳固含量1.25 g/kg、最佳超声时间60 min、最佳分散剂用量3 g/kg的条件下，超声分散后0.5 h内进行粒度测量最可靠.

关键词: 激光粒度分析, 氮化硅, 粒度分布, 检测条件

Abstract: Silicon nitride powder was prepared by combustion synthesis with silica fume. The effects of solid content, ultrasonic time, dispersant concentration and settling time on the particle size measurements were investigated by using median particle diameter d50 and particle diameter distribution width d90?d10 as evaluation indications. The results indicated that the laser particle size analyzer was applicable to measurement particle size of silicon nitride powder by combustion synthesis showing high reproducibility. The above four factors influenced significantly on the measurement results. When solid content was 1.25 g/kg, the needed ultrasonic time was 60 min, and dispersant content was 3 g/g, optimum dispersion results of Si3N4 by combustion synthesis can be achieved using water as the dispersing medium. In addition, the particle size measurement was the most reliable within 0.5 h after ultrasonic treatment.

Key words: Laser particle size analysis, Silicon nitride, Particle size distribution, median particle diameters dispersing condition

刘鹏飞程路伟许宝松李梦醒韩召. 用激光粒度仪测量燃烧合成的氮化硅粉体粒度的条件[J]. 过程工程学报, 2017, 17(5): 971-975.

Pengfei LIU Luwei CHENG Baosong XU Mengxing LI Zhao HAN. Measurement Conditions of Particle Size of Combustion Synthesis Silicon Nitride Using Laser Particle Size Analyzer[J]. Chin. J. Process Eng., 2017, 17(5): 971-975.

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用激光粒度仪测量燃烧合成的氮化硅粉体粒度的条件

Measurement Conditions of Particle Size of Combustion Synthesis Silicon Nitride Using Laser Particle Size Analyzer

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