화력발전소 바닥재로 제조된 결정화 유리의 미세구조
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2009.02
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서지정보
ㆍ발행기관 : 한국재료학회
ㆍ수록지정보 : 한국재료학회지 / 19권 / 2호
ㆍ저자명 : 강승구
영어 초록
Glass ceramics were made from coal bottom ash by adding CaO and Li2O as glass modifiers and TiO2 as a nucleating agent in a process of melting and quenching followed by a thermal treatment. The surface of the glass ceramics has 1.6 times more Li2O compared to the inner matrix. When TiO2 was not added or when only 2 wt% was added, the surface parts of the glass ceramics were crystalline with a thickness close to 130μm. In addition, the matrixes showed only the glass phase and not the crystalline phase. However, doping of TiO2 from 4 wt% to 10 wt% began to create small crystalline phases in the matrix with an increase in the quantity of the crystalline. The matrix microstructure of glass ceramics containing TiO2 in excess of 8 wt% was a mixture of dark-gray crystalline and white crystalline parts. These two parts had no considerable difference in terms of composition. It was thought that the crystallization mechanism affects the crystal growth, direction and shape and rather than the existence of two types of crystals.
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