第20届全国高技术陶瓷学术年会
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液相浸渗法制备CaAl12 O19 /(MgAl2 O4 -Al2 O3 )复相陶瓷
易帅1, 2 , 曾鲁举1 , 邓丽娜1 , 薛飞1 , 谢金莉1 , 刘艳改2 , 房明浩2 , 吴小文2 , 黄朝晖2,
1 中国建筑材料科学研究总院有限公司,中国建材检验认证集团股份有限公司,北京 100024 2 中国地质大学(北京)材料科学与工程学院,北京 100083
Preparation of CaAl12 O19 /(MgAl2 O4 -Al2 O3 ) Ceramics by Liquid Infiltration
YI Shuai1,2 , ZENG Luju1 , DENG Lina1 , XUE Fei1 , XIE Jinli1 , LIU Yangai2 , FANG Minghao2 , WU Xiaowen2 , HUANG Zhaohui2
1 China Building Material Test & Certification Group Co., Ltd, China Building Materials Academy Co., Ltd, Beijing 100024 2 School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083
摘要 采用液相浸渗法制备了CaAl12 O19 /(MgAl2 O4 -Al2 O3 )复相陶瓷。研究了不同原料物质的量比(n (α-Al2 O3 ):n (MgO)=1:1、2:1、3:1、4:1)对复相陶瓷的物相组成、显微结构和性能的影响。结果表明:试样中的MgAl2 O4 均不是理论配比,Al2 O3 含量不足时,生成了Ca12 Al14 O33 和CaAl4 O7 。与未浸渗试样对比,生成的低熔点Ca12 Al14 O33 可能促进了MgAl2 O4 晶粒的生长和发育;板片状CaAl12 O19 的生成虽然降低了试样的体积密度,但其强度反而增大,起到了增强、增韧的作用。随着复相材料中Al2 O3 含量的增加,试样的体积密度和抗折强度均逐渐增大。
关键词:
液相浸渗法
CaAl12 O19 /(MgAl2 O4 -Al2 O3 )复相陶瓷
物相组成
显微结构
力学性能
Abstract: CaAl12 O19 /(MgAl2 O4 -Al2 O3 ) composite ceramics were prepared by liquid infiltration. The effects of different molar ratios (n (α-Al2 O3 ):n (MgO)=1:1, 2:1, 3:1, 4:1) of raw materials on the phase composition, microstructure and properties of composite ceramics were studied. The results showed that MgAl2 O4 phases were confirmed as magnesia-rich or alumina-rich nonstoichiometric spinel. When the content of Al2 O3 was insufficient, the Ca12 Al14 O33 and CaAl4 O7 phase were generated. Compared with the uninfiltrated samples, the low melting point Ca12 -Al14 O33 might promote the growth of MgAl2 O4 grains. Although the formation of CaAl12 O19 with plate-like morphology reduced the bulk density of samples, the strength increased instead, playing a role of strengthening and toughening. As the content of Al2 O3 increased, the bulk density and flexural strength of the samples increased gradually.
Key words:
liquid infiltration
CaAl12 O19 /(MgAl2 O4 -Al2 O3 ) ceramics
phase composition
microstructure
mechanical properties
出版日期: 2019-09-25
发布日期: 2019-07-31
基金资助: 国家自然科学基金(51072186 ;51032007);中国建筑材料科学研究总院有限公司青年科学基金(YD-668)
通讯作者:
huang118@cugb.edu.cn
作者简介: 易帅,中国建筑材料科学研究总院有限公司,高级工程师。2015年7月毕业于中国地质大学(北京),工学博士。中国材料与试验团体标准建筑材料领域委员会耐火材料技术委员会(CSTM/FC03/TC13)秘书长,中国硅酸盐学会特种陶瓷分会青工委委员。主要从事先进耐火材料、高性能陶瓷材料等相关领域的研究。在国内外重要期刊发表学术论文20余篇;参与了多项耐火材料行业标准的制修订工作,担任第一起草人的标准项目有9项;申请中国发明专利6项(授权3项),国外专利2项。 黄朝晖,博士,教授,2002年4月在北京科技大学获得博士学位后到清华大学材料系从事博士后研究,2004年5月从清华大学材料系博士后出站到中国地质大学(北京)材料科学与工程学院工作。现任中国地质大学(北京)学校工会兼职副主席,材料科学与工程学院副院长,中国硅酸盐学会特种陶瓷分会理事,中国硅酸盐学会耐火材料分会副理事长,全国材料科学技术名词审定委员会特聘专家。主要研究领域为先进陶瓷与耐火材料、纳米材料、岩石矿物材料及其复合材料等。作为项目负责人承担国家自然科学基金重点项目1项和面上项目4项,是“十二五”科技支撑项目《优势非金属矿产资源高效综合利用技术研究与示范》的召集人并负责课题。曾获得省部科技进步二等奖3项,已发表学术论文300余篇,其中SCI检索论文收录150余篇,申请国家发明专利60余项,其中获得授权的国家发明专利16项。
引用本文:
易帅, 曾鲁举, 邓丽娜, 薛飞, 谢金莉, 刘艳改, 房明浩, 吴小文, 黄朝晖. 液相浸渗法制备CaAl12 O19 /(MgAl2 O4 -Al2 O3 )复相陶瓷[J]. 材料导报, 2019, 33(18): 3166-3169.
YI Shuai, ZENG Luju, DENG Lina, XUE Fei, XIE Jinli, LIU Yangai, FANG Minghao, WU Xiaowen, HUANG Zhaohui. Preparation of CaAl12 O19 /(MgAl2 O4 -Al2 O3 ) Ceramics by Liquid Infiltration. Materials Reports, 2019, 33(18): 3166-3169.
链接本文:
http://www.mater-rep.com/CN/10.11896/cldb.19040061
或
http://www.mater-rep.com/CN/Y2019/V33/I18/3166
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