摘要
本研究聚焦于采用碳热还原法制备高品质氮化铝(AlN)粉体的工艺及其产品性能分析.通过系统考察不同碳前驱体在碳化裂解过程中的行为、氮化温度的选择以及保温时长对最终粉体性能的影响,得出以下关键发现:多种碳前驱体在约800℃的温度下基本完成碳化裂解过程.进一步地,当氮化反应温度设定为1650℃,并维持3~5 h的保温时间时,所制备的AlN粉体展现出均匀的粒度分布及高纯度,无显著杂质.采用自主研发的动态高温反应器进行实验,所制备的AlN粉体在性能上表现优异,其整体性能指标不仅优于国内同类产品,还达到了甚至在某些方面超越了日本德山E级粉的标准.具体而言,利用该粉体通过干压工艺制成的基片,其热导率高达184 W/(m·K),这一性能水平与采用德山E级粉制备的基片相当.
The study focuses on the production process of high-quality aluminum nitride(AIN)powders using the carbonthermal reduction method and their product properties.A thorough analysis is conducted to examine how different carbon precursors behave during carbonization and cracking,and how the nitridation temperature and holding time impact the final properties of the powders.The key findings reveal that:Multiple carbon precursors are basically carbonized and cracked at a temperature of approximately 800 C.Additionally,when a nitridation temperature of 1650℃is applied and maintained for a holding time of 3 to 5 hours,the prepared AIN powders are characterized by a uniform particle size distribution and high purity,free from notable impurities.For the experimental preparation,a self-developed dynamic high-temperature reactor is utilized.The produced AlN powders exhibit superior performance,with overall specifications that not only surpass those of domestic counterparts but also meet or even exceed Tokuyama E-grade powders in certain aspects.Notably,substrates fabricated through dry-pressing process using these powders achieve a thermal conductivity of up to 184 W/(m·K),which is on par with the performance level of substrates prepared using Tokuyama E-grade powders.
作者
李宽宽
李玉宁
赵煜
肖汉宁
高鹏召
覃航
吴明远
李俊芳
LI Kuankuan;Li Yuning;ZHAO Yu;XIAO Hanning;GAO Pengzhao;QIN Hang;WU Mingyuan;LI Junfang(Shaanxi Coal and Chemical Technology Research Institute Co.,Ltd.,Xi'an 710199,China;Hunan University,Changsha 410082,China)
出处
《西安文理学院学报(自然科学版)》
2025年第2期90-95,共6页
Journal of Xi’an University(Natural Science Edition)
基金
2022年陕西煤业化工技术研究院基金项目(2022YJY-Y-HZ-NY002)。
关键词
AlN粉体
工艺温度
动态高温反应器
AIN powder
process temperature
dynamic high temperature reactor
