MgO-CaO-Al2O3-SiO2 glass 첨가제 함량이 AlN의물성에 미치는 영향
Effect of MgO-CaO-Al2O3-SiO2 Glass Additive Content on Properties of Aluminum Nitride Ceramics
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In this study, the effect of the content of MgO-CaO-Al2O3-SiO2 (MCAS) glass additives on the properties of AlN ceramics is investigated. Dilatometric analysis and isothermal sintering for AlN compacts with MCAS contents varying between 5 and 20 wt% are carried out at temperatures ranging up to 1600oC. The results showed that the shrinkage of the AlN specimens increases with increasing MCAS content, and that full densification can be obtained irrespective of the MCAS content. Moreover, properties of the AlN-MCAS specimens such as microhardness, thermal conductivity, dielectric constant, and dielectric loss are analyzed. Microhardness and thermal conductivity decrease with increasing MCAS content. An acceptable candidate for AlN application is obtained: an AlN-MCAS composite with a thermal conductivity over 70 W/m·K and a dielectric loss tangent (tan δ) below 0.6 × 10−3, with up to 10 wt% MCAS content.
Abstract
In this study, the effect of the content of MgO-CaO-Al2O3-SiO2 (MCAS) glass additives on the properties of AlN ceramics is investigated. Dilatometric analysis and isothermal sintering for AlN compacts with MCAS contents varying between 5 and 20 wt% are carried out at temperatures ranging up to 1600oC. The results showed that the shrinkage of the AlN specimens increases with increasing MCAS content, and that full densification can be obtained irrespective of the MCAS content. Moreover, properties of the AlN-MCAS specimens such as microhardness, thermal conductivity, dielectric constant, and dielectric loss are analyzed. Microhardness and thermal conductivity decrease with increasing MCAS content. An acceptable candidate for AlN application is obtained: an AlN-MCAS composite with a thermal conductivity over 70 W/m·K and a dielectric loss tangent (tan δ) below 0.6 × 10−3, with up to 10 wt% MCAS content.
참고문헌 (19)
- Y. Baik, , Key Eng. Mater., 122-124, pp.553~ (1996)
- R. E. Simons, , Solid State Technol, 26, pp.131~ (1983)
- C. Zweben, , JOM, 50, pp.47~ (1998)
- Y. Kurokawa, , IEEE Trans. Compon., Hybrids, Manuf. Technol., 8, pp.247~ (1985)
- T. B. Jackson, , J. Am. Ceram. Soc., 80, pp.1421~ (1997)
- T. B. Troczynski, , J. Am. Ceram. Soc., 72, pp.1488~ (1989)
- E. Streicher, , J. Eur. Ceram. Soc., 6, pp.23~ (1990)
- J. Jarrige, , J. Eur. Ceram. Soc., 12, pp.279~ (1993)
- K. Watari, , J. Mater. Res., 14, pp.1409~ (1999)
- Y. Liu, , J. Mater. Sci. Lett., 18, pp.703~ (1999)
- L. Qiao, , J. Eur. Ceram. Soc., 23, pp.61~ (2003)
- H. S. Zhao, , J. Zhejiang Univ. Sci. A, 10, pp.109~ (2009)
- K. P. Hong, , Int. J. Appl. Ceram. Technol, 10, pp.E25~ (2013)
- C. F. Yang, , Key Eng. Mater., 336-338, pp.1868~ (2007)
- 이화준, "Synthesis of MgO-CaO-Al2O3-SiO2 Nanocomposite Powder by Polymeric Complex Method as a Novel Sintering Additive of AlN Ceramics", Electronic Materials Letters, 12(6), pp.732~737 (2016), 대한금속·재료학회[DOI]
- 백수현, "나노 MgO–CaO–Al2O3–SiO2 glass 첨가제를 가진 AlN의소결거동 및 열전도도", 한국분말재료학회지, 25(5), pp.426~434 (2018), 한국분말재료학회[DOI]
- S. Jang, , Ceram. Int., 38S, pp.S543~ (2012)
- C. F. Yang, , Ceram. Int., 24, pp.243~ (1998)
- S. Kume, , J. Eur. Ceram. Soc., 25, pp.2791~ (2005)