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Vol.54, No.1, 15 ~ 22, 2016
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| Title |
| Effect of Microstructural Features on Optical Transmittance Mechanism in Vacuum Kinetic Sprayed Al_{2}O_{3} Film |
| 김진영 Jinyoung Kim , 박형권 Hyungkwon Park , 남진수 Jin Su Nam , 손경수 Kyung Soo Son , 임영태 Young Tae Im , 이재욱 Jae Wook Lee , 정봉근 Bong Geun Chung , 이창희 Changhee Lee |
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| Abstract |
| Glass materials have been applied in various industrial fields. Research on improvement of mechanical properties has consistently been performed due to this material’s intrinsically vulnerable characteristics. Surface modification is considered as the promising method to supplement the weakness; especially, ceramics are thought of as appropriate materials for film materials because of their outstanding mechanical properties and their chemical stability. However, unfortunately, the optical transmittance of ceramic materials is poor, and can rather restrict this material’s utilization in glass. In this regard, the optical transmittance mechanism of vacuum kinetic sprayed Al_{2}O_{3} film was investigated. To control and analyze the film’s optical property, the gas flow rate, as a main process variable, was controlled; then, post heat-treatment was performed. Consequently, the film’s optical property was determined by three microstructural factors. That is, crystallite size, defects (including lattice distortion), and amorphous phase, generated during particle deposition, were found to strongly affect the transmittance. |
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| Key Words |
| glass, coating, optical property, UV-vis spectrometer, vacuum kinetic spray |
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