Al_2O_3基陶瓷导丝器材料的烧结工艺研究  

Alumina Matrix Ceramic Filar Guide Produced by Sintering Process

作　　者：万宇杰[1] 童幸生[1] 熊伟 

机构地区：[1]江汉大学机电与建筑工程学院 [2]武汉重型机床集团有限公司

出　　处：《特种铸造及有色合金》2013年第12期1102-1105,共4页Special Casting & Nonferrous Alloys

基　　金：湖北省教育厅科学技术研究资助项目(B2013157)

摘　　要：依据陶瓷材料烧结时相对密度变化模型和晶粒变化模型,确定了Al2O3陶瓷材料的烧结温度和保温时间,制定了烧结工艺,从而得出Al2O3陶瓷材料的最佳烧结工艺。试验证明,配方为Al2O3+0.2%的MgO+0.4%的SiO2,成型压力为200MPa,从550℃升温到1 000℃,时间设定为12min,1 000℃到最高烧结温度升温速度设定为2℃/min,1 600℃保温2h,获得材料的微观组织最佳,力学性能最好。According to the relative density change models of sintered ceramic material and grain variation model, sintering temperature and holding time of Al2O3 ceramics were identified, and sintering process was presented to determine the optimized parameters. Maximum sintering temperature and holding time are the important factors affecting the performance of sintered composites. The results show that with Al2O3 ＋0.2%MgO＋0.4%SIO2, molding pressure of 200 MPa, and heating from 550 ℃ to 1 000 ℃ for 12 min, and then from 1 000 ℃ to maximum sintering temperature with heating rate of 2℃/min as well as at holding temperature 1 600 ℃ for 2 hours, ceramic filar guide exhibits desirable microstructure with excellent mechanical properties.

关 键 词：AL2O3陶瓷 烧结模型 烧结温度 保温时间 

分 类 号：TQ174.6[化学工程—陶瓷工业]