Open AccessEffect of Salt on Crystal Growth of Plate-like Alumina Particles by Molten-salt Method
Author(s) -
김보연,
이윤주,
김수룡,
권우택,
신동근,
김영희,
최덕균,
Bo Yeon Kim,
Yoon Joo Lee,
Soo Ryong Kim,
Woo Teck Kwon,
Dayeon Shin,
YoungHee Kim,
Duck–Kyun Choi
Publication year - 2015
Publication title -
hwahag gonghag/hwahak gonghak
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.168
H-Index - 9
eISSN - 2233-9558
pISSN - 0304-128X
DOI - 10.9713/kcer.2015.53.5.603
Subject(s) - molten salt , salt (chemistry) , particle size , materials science , crystal growth , particle (ecology) , crystal (programming language) , ionic bonding , ceramic , morphology (biology) , mineralogy , chemical engineering , ion , chemistry , metallurgy , crystallography , organic chemistry , geology , oceanography , engineering , computer science , programming language , paleontology
??? ??? ?? ? ??? ??? ??? ??? ??? ??? ?? ?? ????. ?? ??? ??, ??? ?? ?? ???? ?? ??? ??? ??? ??. ???(molten-salt)? ???? ??? ??? ???? ??, 800~900 oC ???? ???? salt? ??? ??? ??? ?? ?? ??? ??? ? ???, ?? ?? ??? ???? ??, ?? salt? ionic strength? ?? ???? ??? ?? ??? ???? ?? ????. ? NaCl, Na2SO4, Na3SO4? ???? ionic strength? ?? ??? salt ???? ???? ??? , ??? ???? ?? ??? ??? ??? ??, ?? ??? ?? ???? ?? ? ??? ??? ??? .
Alumina powder have been expanded its application in industry and required to control its morphology such as powder size and aspect ratio of single particle. It can be synthesized by molten - salt method which is possible to obtain various shapes of ceramic particles by controlling the growth direction because each crystal face has different growth rate. In this study, various combinations of salts such as NaCl, Na2SO4, Na3PO4 and their mixture were used for control the growth of plate like alumina particle from the initial stage of synthesis because salt having different ionic strength can control the growth direction of ceramic particle under its melting condition around 800~900 °C, and growth behavior of plate-like alumina particle with different reaction conditions such as temperature and concentration on the crystal size and shape was studied.? ??? ??(No. NRF 2010-0019468)? ??? ?? , ??? ???