摘要
本研究采用固相烧结工艺在1500℃下烧结镁铝质陶瓷,研究了不同比例Al_(2)O_(3)和MgO对镁铝尖晶石质陶瓷材料性能的影响。研究发现随MgO含量的增多,样品的主物相由MgAl_(2)O_(4)和Al_(2)O_(3)相转变为MgAl_(2)O_(4)和MgO,抗折强度先增后减。在m(Al_(2)O_(3))/m(MgO)为2.53时抗折强度达到最大值,这主要是由于此时样品中仅存在均匀分布的MgAl_(2)O_(4)颗粒。
In this paper,magnesium aluminum ceramics with different proportions were sintered at 1500℃by solid-state sintering process,and the changes of the phase composition,microstructure and flexural strength of the samples were studied.It was found that with the increase of MgO content,the main phases of the samples changed from MgAl_(2)O_(4) and Al_(2)O_(3) phases to MgAl_(2)O_(4) and MgO,and the flexural strength first increased and then decreased.The flexural strength reached the maximum value when m(Al_(2)O_(3))/m(MgO)was 2.53,which was mainly due to the fact that there was no other phase in the sample except MgAl_(2)O_(4),and the particles were evenly distributed.
作者
玄松桐
田玉明
王晓军
XUAN Songtong;TIAN Yuming;WANG Xiaojun(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Shanxi Vocational and Technical College of Engineering,Taiyuan 030009,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2022年第4期652-656,724,共6页
Journal of Materials Science and Engineering
基金
山西省重点研发资助项目(201803D121027)
山西省科技重大专项资助项目(20181101001)
山西省研究生联合培养基地人才培养资助项目(2016JD33)
山西省研究生创新资助项目(2019BY121)。
关键词
镁铝尖晶石
固相烧结
致密性
抗折强度
相组成
显微结构
Magnesium aluminum spinel
Solid phase sintering
Compactness
Flexural strength
Phase composition
Microstructure
