Synthesis of MgO-CaO-Al2O3-SiO2 nanocomposite powder by polymeric complex method as a novel sintering additive of AlN ceramics

Lee, Hwa-Jun; Cho, Woo-Seok; Kim, Hyeong Jun; Wei, Pan; Shahid, M.U.; Ryu, Sung‐Soo

doi:10.1007/s13391-016-6087-0

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…We also performed the PCM using a procedure described in a previous study. 25) The starting materials were citric acid…”

Section: Methodsmentioning

confidence: 99%

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Effect of Additive Size on the Densification and Thermal Conductivity of AlN Ceramics with MgO–CaO–Al2O3–SiO2 Additives

Lee¹,

Cho²,

Kim³

et al. 2017

J. Korean Ceram. Soc

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In this study, we investigate the effect of additive size on the densification and thermal conductivity of AlN ceramics with MgO-CaO-Al 2 O 3-SiO 2 (MCAS) additives. Micro-sized MCAS powder prepared via melting and nano-sized MCAS powder synthesized via the polymeric complex method are used as sintering additives. We analyze the densification behavior of AlN added with 5 wt.% of MCAS by dilatometry as well as by isothermal sintering in the temperature range of 1300~1700 o C. AlN exhibits higher sinterability with nano-MCAS than with micro-MCAS, and both specimens approach their maximum densities when sintered at 1600 o C for 4 h. The thermal conductivities of AlN with 5 wt% of nano-and micro-MCAS additives sintered at 1600 o C are 82.6 and 32.0 W/mK, respectively. We find that nano-MCAS is more effective in sintering of AlN ceramics at lower temperatures, and thus for enhancing their thermal conductivities.

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“…We also performed the PCM using a procedure described in a previous study. 25) The starting materials were citric acid…”

Section: Methodsmentioning

confidence: 99%

“…They reported that a significant enhancement in thermal conductivity is possible in this system. Lee et al 25) recently confirmed that the polymeric complex method (PCM) can be used to synthesize nano-MCAS with particle sizes around 50 nm, and that the resulting nano-additive is very effective in the sintering of AlN at low temperatures.…”

Section: Introductionmentioning

confidence: 99%