Sintered body characteristics of LAS by addition of CaCO3 and ZrO2 using a solid-state reaction (고상반응법을 이용한 LAS계의 CaCO3와 ZrO2 첨가에 따른 소결체 특성 연구)

Sang-Hun Kim (김상훈); Eun-Tae Kang (강은태); Ung-Soo Kim (김응수); Kwangtaek Hwang (황광택); Cho, Woo-Seok (조우석)

Sintered body characteristics of LAS by addition of CaCO3 and ZrO2 using a solid-state reaction

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2011, 21(5), pp.218-224
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : September 30, 2011
Accepted : October 14, 2011

Sang-Hun Kim ¹, Eun-Tae Kang ², Ung-Soo Kim ¹, Kwangtaek Hwang ¹, Cho, Woo-Seok ¹

¹한국세라믹기술원
²경상대학교

Accredited

ABSTRACT

LAS (Li2O-Al2O3-SiO2) ceramics were sintered by a solid-state reaction. CaCO3 and ZrO2 were added to the β-spodumene (Li2O-Al2O3-4SiO2) composition of the LAS system for enhancement of sintering behavior and mechanical strength, respectively. We have investigated the sintering characteristics, microstructures, mechanical properties and thermal expansion characteristics according to the change of the amount of additive and sintering temperature of the β-spodumene. At 0.1 mol% CaCO3, the densification of β-spodumene was significantly improved. At 0.04 mol% ZrO2, the strength of β-spodumene was also improved. For all the selected all compositions, the thermal expansion coefficient was measured by a dilatometer, which revealed 1.2 to 1.7 × 10−6/oC.

KEYWORDS

Low thermal expansion, LAS (Li2O-Al2O3-SiO2), Sintering characteristics

Citation status

* References for papers published after 2023 are currently being built.

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