燃烧合成氮化硅粉体的性能一致性评价方法和应用

李宏华, 东婉茹, 王良, 杨增朝, 李江涛

Consistency of Silicon Nitride Powders Produced by Combustion Synthesis: Evaluation and Application

LI Honghua, DONG Wanru, WANG Liang, YANG Zengchao, LI Jiangtao

表1 氮化硅粉体产品理化指标体系及测量方法

Table 1 Physical and chemical index system and measurement methods for silicon nitride powder products

General indicator Secondary indicator Symbol Unit Method Test equipment Physical property Particle size D10 μm Laser diffraction method Particle diameter sizer (Dandong Bettersize Instruments, Bettersiza 2600) D50 μm D90 μm Bulk density ρB kg/m3 Weight-volume method Intelligent integrated powder characterizer (Dandong Bettersize Instruments, BT-1001) Specific surface area S m2/g Gas adsorption method Gas absorption powder specific surface tester (MicrotracBEL, Belsorp maxⅡ) Component property α phase content A % (in mass) Mean-normalised- intensity method X-ray diffractometers (Rigaku Corporation, MiniFlex600) O content O % (in mass) Infrared detection method (CO/CO2) Nitrogen/oxygen analyz (HORIBA, EMGA- 820) Moisture content H2O % (in mass) Gravimetric method Rapid moisture tester (Shenzhen Guanya, SZ-GY820FT)