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題名 | 氟化鎂光學陶瓷之晶粒排列與結晶構造之研究=The Study of Grain Preferred Orientation and Crystal Structure of Magnesium Fluoride Optical Ceramic |
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作者 | 張晴生; 陳錫桓; Chang, Chen-shen; Chen, Shyi-hwan; |
期刊 | 逢甲學報 |
出版日期 | 19980600 |
卷期 | 33 1998.06[民87.06] |
頁次 | 頁31-37 |
分類號 | 440.33 |
語文 | chi |
關鍵詞 | 熱壓; 氟化鎂光學陶瓷; 光學均勻度; 光學異向性; 雙折射; 順向排列; 直線穿透強度; Hot-press; Magnesium fluoride optical ceramic; Optical homogeneity; Optical anisotropy; Preferred orientation; In-line transmission; |
中文摘要 | 本文主旨在根據光學異向性探討由熱壓技術製成氟化鎂光學陶瓷體的均勻度,其 光學異向性之來源是由於材料原始粉體之結晶構造與在熱壓製程中晶粒順向排列的結果所造 成。 這些組織構造將利用 X-ray 繞射方法與偏光干涉圖加以討論,比較熱壓而成的試片測 量在兩個主要方向上之直線穿透強度明顯地表示出由於光學異向性產生之雙折射量減少的結 果可以用來部份解釋為什麼在一個方向上有較高之直線穿透強度。 |
英文摘要 | This paper presents the results of a study of the homogeneity of magnesium fluoride optical ceramic produced by hot-pressed technique in terms of optical anisotropy. The optical anisotropy is caused by the crystal structure of raw material and the grain preferred orientation during hot-pressing. These textual structures are discussed both by using X-ray diffraction pattern method and the interference polarization pattern. A comparison of in-line transmittance in the two principal directions of a hot-pressed plate strongly suggested that a reduction of birefringence resulting from the optical anisotropy was partially responsible for the high in-line transmittance. |
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