Li2O가 포함된 B2O3-SiO2-La2O3계 광학 유리 특성
(주)코리아스칼라
- 최초 등록일
- 2023.04.03
- 최종 저작일
- 2022.12
- 5페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국재료학회
ㆍ수록지정보 : 한국재료학회지 / 32권 / 12호
ㆍ저자명 : 이지선, 김세훈, 김진호
목차
Abstract
1. 서 론
2. 실험 방법
3. 결과 및 고찰
3.1. 모유리의 광학적 특성
3.2. 광학유리의 굴절률 특성
3.3. 광학유리의 물리적 특성
3.4. 광학유리의 열적 특성
3.5. 광학유리의 기계적 특성 분석
4. 결 론
Acknowledgement
References
영어 초록
In this study, lanthanum boron silicate glasses were prepared with a composition of x Li2O-(60-x)B2O3-5CaO- 5BaO-7ZnO-10SiO2-10La2O3-3Y2O3 where x = 1,3,5,7, and 9 mol%. Each composition was melted in a platinum crucible under atmospheric conditions at 1,400 °C for 2 h. Clear glasses with a transmittance exceeding 85 % were fabricated. Their optical, thermal, and physical properties, such as refractive index, Abbe number, density, glass transition (Tg) and Knoop hardness were studied. The results demonstrated that refractive index was between 1.6859 and 1.6953 at 589.3 nm. The Abbe number was calculated using an equation for 589.3 nm (nd), 656.3 nm (nf) and 486.1 nm (nc) and was observed to be in the range from 57.5 to 62.6. As the Li2O content increased, the glass transition temperature of the optical glass decreased from 608 °C to 564 °C. If glass mold pressing is performed using a material with a low transition temperature and high mechanical strength, then the optical glasses developed in this study can be completely commercialized.
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