Effects of alumina sols on the sintering of α-alumina ceramics

被引：14
|
作者：
Yang, Rui [1 ,2 ]
Qi, Zhe [1 ]
Gao, Ye [1 ]
Yang, Jinhua [1 ]
Zhou, Yiran [1 ]
Liu, Hu [1 ,2 ]
Peng, Luming [3 ,4 ]
Jiao, Jian [1 ,2 ]
机构：
[1] AECC Beijing Inst Aeronaut Mat, Natl Key Lab Adv Composites, Beijing 100095, Peoples R China
[2] AECC Beijing Inst Aeronaut Mat, Key Lab Adv Corros & Protect Aviat Mat, Beijing 100095, Peoples R China
[3] Nanjing Univ, Key Lab Mesoscop Chem MOE, Sch Chem & Chem Engn, Nanjing 210023, Jiangsu, Peoples R China
[4] Nanjing Univ, Collaborat Innovat Ctr Chem Life Sci, Sch Chem & Chem Engn, Nanjing 210023, Jiangsu, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2020年 / 46卷 / 13期
关键词：
Sintering; Alumina sol; Densification; Alumina ceramic; MECHANICAL-PROPERTIES; GRAIN-GROWTH; MICROSTRUCTURE; HIP;
D O I：
10.1016/j.ceramint.2020.05.125
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effects of two kinds of alumina sols on the densification behavior of sub-micron grain sized alpha-alumina ceramics have been investigated. Composition of the sol-derived gels was investigated by energy dispersive spectra and Fourier transform infrared spectra. Structural evolution of the gels at different temperatures was characterized by a combination of X-ray diffraction and Al-27 magic angle spinning nuclear magnetic resonance spectroscopy. Results showed that the gel containing chlorine and carbon transformed to alpha-alumina at about 950 degrees C, significantly lower than the other gel which transformed at about 1050 degrees C. Density measurements and scanning electron microscopy analyses were used to investigate the sintering of alumina ceramics with or without alumina sols. It was found that the alumina sols had profound effects on the densification of alumina ceramics. The ceramic displayed the best densification behavior when the sol containing chlorine and carbon was added.
引用
收藏
页码：20865 / 20870
页数：6
相关论文
共 50 条
  • [41] PREPARATION OF ALPHA-ALUMINA CERAMICS - THE USE OF BOEHMITE SOLS AS DISPERSING AGENTS
    KINDL, B
    CARLSSON, DJ
    DESLANDES, Y
    HODDENBAGH, JMA
    CERAMICS INTERNATIONAL, 1991, 17 (06) : 347 - 350
  • [42] Sintering kinetics of high-alumina ceramics with complex additives
    Lotov, VA
    GLASS AND CERAMICS, 1999, 56 (3-4) : 103 - 107
  • [43] Sintering kinetics of high-alumina ceramics with complex additives
    V. A. Lotov
    Glass and Ceramics, 1999, 56 : 103 - 107
  • [44] Enhanced properties of pure alumina ceramics by oscillatory pressure sintering
    Han, Yao
    Li, Shuang
    Zhu, Tianbin
    Wu, Weiwei
    An, Di
    Xie, Zhipeng
    CERAMICS INTERNATIONAL, 2018, 44 (05) : 5238 - 5241
  • [45] Kinetics and mechanism of a sintering process for macroporous alumina ceramics by extrusion
    Wang, HT
    Liu, XQ
    Chen, FL
    Meng, GY
    Sorensen, OT
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1998, 81 (03) : 781 - 784
  • [46] The Spark Plasma Sintering of Silicon Carbide Ceramics Using Alumina
    Unlu, M. D.
    Goller, G.
    Yucel, O.
    Sahin, F. C.
    ACTA PHYSICA POLONICA A, 2014, 125 (02) : 257 - 259
  • [47] Anisotropic sintering shrinkage in alumina ceramics containing oriented platelets
    Ozer, I. O.
    Suvaci, E.
    Karademir, B.
    Missiaen, J. M.
    Carry, C. P.
    Bouvard, D.
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (06) : 1972 - 1976
  • [48] FABRICATION OF DENSE BETA,BETA''-ALUMINA CERAMICS BY REACTION SINTERING
    HIRATA, Y
    IZAIKU, T
    NIPPON SERAMIKKUSU KYOKAI GAKUJUTSU RONBUNSHI-JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 1993, 101 (03): : 268 - 272
  • [49] Step Sintering of Microwave Heating and MicrowavePlasma Heating for Alumina Ceramics
    Jinsong ZHANG
    Lihua CAO
    Yongjin YANG
    YunXiang DIAO and Xuexuan SHEN(Institute of Metal Research
    Journal of Materials Science & Technology, 1999, (05) : 419 - 422
  • [50] Kinetics and mechanism of a sintering process for macroporous alumina ceramics by extrusion
    Univ of Science and Technology of, China, Hefei, China
    J Am Ceram Soc, 3 (781-784):
12345