Crystal growth of nanosized α-Fe2O3 particles in frit (Frit에서의 나노사이즈 α-Fe2O3 입자의 결정 성장)

Hiroaki-Katsuki; Choi Eun Kyoung (최은경); lee won jun (이원준); Won-Jin Moon (문원진); Ungsoo Kim (김응수); Kwangtaek Hwang (황광택); Wooseok Cho (조우석)

doi:10.6111/JKCGCT.2018.28.2.069

Crystal growth of nanosized α-Fe2O3 particles in frit

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2018, 28(2), pp.69~73
DOI : 10.6111/JKCGCT.2018.28.2.069
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Published : April 30, 2018

Hiroaki-Katsuki ¹, Choi Eun Kyoung ¹, lee won jun ¹, Won-Jin Moon ², Ungsoo Kim ¹, Kwangtaek Hwang ¹, Wooseok Cho ¹

¹한국세라믹기술원
²한국기초과학지원연구원

Accredited

ABSTRACT

Crystal growth of α-Fe 2 O 3 nanosized particles of 80~90 nm in size, which were hydrothermally prepared from 0.03 M FeCl 3 solution at 100 o C, was investigated in Pb-containing and Pb-free frit. By heating α-Fe 2 O 3 nanosized particles in two frits at 800 o C, the average diameter of particles in frits was increased to 200~210 nm and 150~160 nm, respectively, and the crystal growth due to the aggregation and sintering of several α-Fe 2 O 3 particles was observed. Formation ratios of larger particles over 100 nm in diameter were 54 % in Pb-free frit and 85 % in Pb-containing frit. After heating α-Fe 2 O 3 particles in frits at 800 o C, 7~9 nm in average diameter of pores were formed in particles. Theses pores were derived from the porous structure of original α-Fe 2 O 3 particles and confined in particles during sintering.

KEYWORDS

Nanosized α-Fe 2 O 3, Pb-containing frit, Pore formation, Crystal growth, Raw material

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