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수열합성법을 이용한 티탄산칼륨 휘스커의 합성과 특성

Synthesis and characterization of potassium titanate whisker by hydrothermal process

손정훈|이제균|배동식|최연빈
한국결정성장학회 (The Korea Association Of Crystal Growth, Inc.)|2017.02|한국결정성장학회지 (Journal of the Korean Crystal Growth and Crystal Technology)|제27권 제1호|pp. 9-17|DOI https://doi.org/10.6111/JKCGCT.2017.27.1.009

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참고문헌

키워드

MicrostructureHydrothermal processPotassium titanate whisker
주제분류재료공학

초록

K2Ti6O13 휘스커는 낮은 온도 및 압력조건에서 수열합성법을 통해 합성하였다. 합성된 K2Ti6O13의 평균길이는300 nm~1.5 μm이고, 평균 반경은 15 nm~60 nm이다. 합성된 K2Ti6O13의 Aspect ratio는 12 이하로 측정되었다. 합성된K2Ti6O13의 평균 길이와 직경은 반응온도와 시간, KOH 몰 농도를 조절하여 제어하였다. 결정구조 상 반응온도 210 o C, 반응시간 4시간 이상에서 potassium hexatitanate가 합성되었고, 휘스커의 길이는 반응온도가 증가할수록 증가하였다. 합성된K2Ti6O13은 X-선 회절분석기(XRD)와 전계 방사 주사전자현미경(FE-SEM)을 이용하여 특성평가를 실시하였다.

Abstract

K2Ti6O13 whisker have been synthesized by hydrothermal process at low temperature and pressure condition. The average length of the synthesized K2Ti6O13 whisker was about in the range of 300 nm to 1.5 μm. The average diameter of the synthesized K2Ti6O13 whisker was 15 nm to 60 nm. The aspect ratio of the synthesized K2Ti6O13 whisker was below 12. The average length and diameter of the synthesized K2Ti6O13 whisker can be controlled by reaction temperature and time, KOH molar ratio. K2Ti6O13 whisker was synthesized from more than 210 o C and 4 h at reaction temperature and time. The length of the whisker is increased with increasing reaction temperature. Characterization of the synthesized K2Ti6O13 whisker was carried out using the XRD and FE-SEM.

참고문헌 (28)

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