Browse > Article
http://dx.doi.org/10.4191/kcers.2013.50.3.226

Low Temperature Processing of Nano-Sized Magnesia Ceramics Using Ultra High Pressure  

Song, Jeongho (Department of Materials Science and Engineering, University of Seoul)
Eom, Junghye (Department of Materials Science and Engineering, University of Seoul)
Noh, Yunyoung (Department of Materials Science and Engineering, University of Seoul)
Kim, Young-Wook (Department of Materials Science and Engineering, University of Seoul)
Song, Ohsung (Department of Materials Science and Engineering, University of Seoul)
Publication Information
Journal of the Korean Ceramic Society / v.50, no.3, 2013 , pp. 226-230 More about this Journal
Abstract
We performed high pressure high temperature (HPHT) sintering for the 20 nm MgO powders at the temperatures from $600^{\circ}C$ to $1200^{\circ}C$ for only 5 min under 7 GPa pressure condition. To investigate the microstructure evolution and physical property change of the HPHT sintered MgO samples, we employed a scanning electron microscopy (SEM), density and Vickers hardness measurements. The SEM results showed that the grain size of the sintered MgO increased from 200 nm to $1.9{\mu}m$ as the sintering temperature increased. The density results showed that the sintered MgO achieved a more than 95% of the theoretical density in overall sintering temperature range. Based on Vickers hardness test, we confirmed that hardness increased as temperature increased. Our results implied that we might obtain the dense sintered MgO samples with an extremely short time and low temperature HPHT process compared to conventional electrical furnace sintering process.
Keywords
Magnesium oxide; HPHT sintering; Nano powder; Low temperature sintering; Hardness;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 T. H. Choi and B. S. Jun, "Wear Mechanism of MgO-C Refractory with Thermite Reaction Products of MgO and Al," J. Kor. Ceram. Soc., 33 [7] 832-38 (1996).   과학기술학회마을
2 D. Chen, E. H. Jordan, and M. Gell, "Pressureless Sintering of Translucent MgO Ceramics," Scr. Mater., 29 757-59 (2008).
3 Y. Fang, D. Agrawal, G. Skandan, and M. Jaing, "Fabrication of Translucent MgO Ceramics Using Nanopowders," Mater. Lett., 58 551-54 (2004).   DOI   ScienceOn
4 Y. B. Lee, H. C. Park, and Ki-Dong Oh, "Influence of $TiO_2$ on Sintering and Microstructure of Magnesia," J. Kor. Ceram. Soc., 31 [5] 471-76 (1994).   과학기술학회마을
5 K. Itatani, T. Tsuijimoto, and A. Kishimoto, "Thermal and Optical Properties of Transparent Magnesium Oxide Ceramics Fabricated by Hot-Isostatic Pressing," J. Eur. Ceram. Soc., 26 639-45 (2006).   DOI   ScienceOn
6 T. B. Tran, S. Hayun, A. Navrotsky, and R. H. R. Castro, "Transparent Nanocrystalline Nure and Ca-Doped MgO by Spark Plasma Sintering of Anhydrous Nanoparticles," J. Am. Ceram. Soc., 95 [4] 1185-88 (2012).   DOI   ScienceOn
7 M. Toshihiko, M. Yusuke, Y. Yoshituki, T. Satoshi, and I. Takayasu, "Effect of Silica and Boron Oxide on Transparency of Magnesia Ceramics," J. Ceram. Soc. Jpn., 107 [1244] 343-48 (1999).   DOI
8 J. Song, Y. Noh, and O. Song, "Property of MgO with Different Sintering Temperatures under High Pressures," J. Kor. Ceram. Soc., 49 [6] 608-13 (2012).   과학기술학회마을   DOI   ScienceOn
9 S. Zhang, N. J. Marriott, and W. E. Lee, "Thermochemistry and Microstructures of MgO-C Refractories Containing Various Antioxidants," J. Eur. Ceram. Soc., 21 1037-47 (2001).   DOI   ScienceOn
10 Y. J. Park, N. M. Hwang, and D. Y. Yoon, "Abnormal Growth of Faceted (WC) Grains in a (Co) Liquid Matrix," Metall. Mater. Trans. A, 27 [9] 2809-19 (1996).   DOI
11 Y. W. Kim, J. Y. Kim, S. H. Rhee, and D. Y. Kim, "Effect of Initial Particle Size on Microstructure of Liquid-Phase Sintered $\alpha$-Silicon Carbide," J. Eur. Ceram. Soc., 20 945-49 (2000).   DOI   ScienceOn
12 W. G. Yoon, H. Y. Kim, J. A. Lee, and J. J. Kim, "Effects of Particle Size of Alumina on the Behaviors of Tape Casting and Sintering of Alumina-Talc System," J. Kor. Ceram. Soc., 34 [12] 1213-20 (1997).   과학기술학회마을
13 K. Lin, J. Chang, J. Lu, W. Wu, and Y. Zeng, "${\beta}-Ca_3(PO_4)_2$ Bioceramics Prepared Using Nano-Size Powders," Ceram. Int., 33 979-85 (2007).   DOI   ScienceOn
14 A. Kamitani, H. Wakana, S. Adachi, Y. Nakajima, K. Higuchi, H. Yamamoto, and K. Tanabe, "Examination of MgO Insulator Thin Films for High-Tc Superconducting Devices," Physica C, 426-431 [2] 1502-07 (2005).   DOI   ScienceOn
15 K. D. Kim, Y. D. Kim, and S. W. Kim, "Synthesis of Micromesoporous Magnesium Oxide Cubes with Nanograin Structures in a Supercritical Carbon Dioxide/Ethanol Solution," J. Nanosci. Nanotechnol., 11 [7] 5823-28 (2011).   DOI
16 R. W. Davidge, "Mechanical Behaviour of Ceramics," pp. 71-92, Cambridge University Press, Cambridge (1980).