摘要
以富硼渣为主要原料,碳黑作还原剂,用硅灰和Al(OH)3调整成分,采用碳热还原氮化法合成MgAlON基复合粉体。通过XRD、SEM等检测手段研究了配料中配碳量、MgO添加量对反应过程及产物的影响。结果表明,理论配碳量为比较合适的配碳量;随着配料中MgO含量的增加,产物中MgAlON的含量也逐渐上升,x值为4.5是比较合适的MgO加入量,继续增加MgO含量,MgAlON的含量变化不大,SiAl6O2N6逐渐减少,而CaAl4O7和BN逐渐增加。
The paper investigated the synthesis of MgAlON-based multiphase powder by carbothermal reduction and nitridation using boron-rich slag as main raw material,carbon black as reductant,silica fume and Al（OH）3 as adjustment components. The effects of carbon content and the MgO content of the ingredients on the synthesis process and phase assembly were studied by X-ray diffraction,scanning electron microscope and energy dispersive X-ray analysis. The results showed that：stoichiometric value of carbon content for the reaction was the most appropriate; with the increase of MgO,the amount of MgAlON（Al23O27N5·xMgO） gradually increased. x value of 4.5 was the appropriate amount of MgO added in the raw material. Continue to increase the MgO content,MgAlON content changed little,SiAl6O2N6 gradually reduced,while the CaAl4O7 and BN gradually increased.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第5期827-829,共3页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)资助项目(2006AA06Z368)
辽宁省科学技术基金资助项目(20081016)
