反应烧结法合成ALON粉体的研究  

Study on Synthesis of ALON by the Method of Reaction-Bonding

作　　者：周纪承[1] 廖志君[1] 齐建起[1] 庞微[1] 程子萌[1] 伍登学[1] 卢铁城[1] 

机构地区：[1]四川大学物理系和辐射物理及技术教育部重点实验室,四川成都610064

出　　处：《稀有金属材料与工程》2007年第A01期72-75,共4页Rare Metal Materials and Engineering

基　　金：国防基础科研基金(A1420060200-06);霍英东青年教师基金(91046);四川省青年科技基金(03ZQ026-039)

摘　　要：采用微米级Al粉和纳米级Al2O3粉为原料,在N2气氛保护下球磨,并在流动N2中煅烧,尝试了纯相ALON粉体的合成。通过改变合成温度和保温时间等工艺参数,使原料反应充分,并通过适当改变原料中Al的含量,以控制合成试样中过量AlN的产生。同时对合成的粉体用XRD进行物相的定性分析,研究了温度、保温时间和原料配比等参数对合成纯相粉体物相的影响,并用TEM对粉体微观形貌进行观察。结果表明,将原料中Al粉的质量比调整为10%后,在1800℃煅烧3h的条件下,可以得到纯相的ALON粉体。Pure phase ALON powder was synthesized using micro-sized Al powder and nano-sized Al2O3 powder as raw materials, which were milled in the nitrogen atmosphere and then calcined in flowing nitrogen. The pure phase ALON powder was supposed to be synthesized completely under appropriate conditions, such as temperature and holding-time. For the excessive AlN produced, the ratio of Al in the starting materials should be controlled strictly. Meanwhile, the effects of the temperature, holding-time and the ratio of AI on the purity of the powder were studied by the XRD analysis. Microstructure of the product was observed with the TEM. The results showed that adjusting the ratio of Al powder to 10wt%, and calcining the starting materials at 1800 ℃ for 3 h, ALON powder with pure phase could be obtained.

关 键 词：尖晶石 氮氧化铝 反应烧结 

分 类 号：TB383.3[一般工业技术—材料科学与工程]