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研究生:莊文豪
論文名稱:玻璃之高溫濕潤特性研究
指導教授:馬廣仁簡錫新簡錫新引用關係
學位類別:碩士
校院名稱:中華大學
系所名稱:機械與航太工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:中文
論文頁數:79
中文關鍵詞:玻璃模造非球面玻璃透鏡抗沾黏膜濕潤角
外文關鍵詞:glass moldingasphersical glass lensanti-stick filmwetting angle
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玻璃模造技術被視為最有能力量產高解析度、穩定性佳且成本較低廉的非球面玻璃透鏡。本研究藉由高溫玻璃濕潤實驗評估高溫玻璃模造時玻璃與模具之間反應,以做為設計模仁上鍍抗沾黏膜之參考。實驗使用住田光學的K-PSK200 低軟化點玻璃球為研究對象,探討操作溫度、環境氣氛、基材成份及薄膜組成對高溫玻璃濕潤沾粘特性之影響。結果顯示在高溫下,玻璃球與基材之間的濕潤角越小,代表玻璃球與基材發生激烈介面化學反應,產生很嚴重的沾黏現象,玻璃球呈現霧化外觀。實驗中通氮氣可避免基材氧化及抑制玻璃球內易揮發元素擴散沉積至基材表面,可改散沾黏情況。要達到滿意的抗玻璃沾黏基材設計,必需底材與鍍膜高溫時化學性質都十分穩定,目前研究結果得知Glass(底材)/Al2O3-SiO2(膜)基材,及Sapphire(底材)/ GaN(膜)基材可得到最滿意的抗玻璃沾黏效果。底材上鍍上 貴金屬薄膜如Pt、Ir,亦可有效降低基材在高溫時與玻璃球之介面反應,改善玻璃沾黏情形。
Glass molding technology is considered having a great potential for the mass production of aspherical glass lens with high resolution, high stability, and lower costs. The interfacial reaction between glass and mold was investigated by wettability experiment of glass at high temperatures to provide the reference for the design of anti-stick coatings. The SUMITA K-PSK200 optical glass gobs with low soft temperature were used in this study. The influence of operation temperature, environment condition, substrate, and thin film composition on wettability of glass at high temperatures was studied. The results show that the higher the temperature, the smaller the wetting angle between glass gob and substrate can be observed. This indicates that severe interfacial chemical reaction occurs and results in the loss of transparency in glass appearance. The experiment was carried out in nitrogen ambient in order to prevent the oxidation of substrates and suppress the volatile elements to diffuse out from glass gob and deposit to the surface of substrate, which improves the sticking problems. To achieve the best anti-stick effect, both of the substrate and coating have to be chemically stable at high temperatures, such as Sapphire (substrate) / GaN (film) and Glass (substrate) / Al2O3 (film). The substrate coated with the precious metal films, such as Pt, Ir, can effectively reduce the interfacial reaction between the substrate and glass gobs.
中文摘要.....................................................................................................I英文摘要....................................................................................................II誌謝...........................................................................................................IV目錄............................................................................................................V表錄...........................................................................................................IX圖錄............................................................................................................X第一章、前言…………………………………………………….............1第二章、文獻回顧……………………………………………….............32.1 玻璃材料......................................................................................3 2.1.1 玻璃材料應用…………………………………………….5 2.1.2 玻璃材料表面處理………………………………………8 2.2 光學材料種類與特性...................................................................8 2.2.1 光學玻璃.............................................................................11 2.2.2 光學玻璃之光學性質.........................................................13 2.2.2.1 折射率....................................................................13 2.2.2.2 色散率(Abbe Number)......................................16 2.2.2.3 透光率....................................................................17 2.2.3 光學玻璃之化學性質........................................................17 2.2.4 光學玻璃之機械性質........................................................19 2.2.5 光學玻璃之熱性質............................................................19 2.3 玻璃與材料之介面反應..............................................................22 2.3.1 鍍模材料............................................................................22 2.3.2 抗沾黏效應........................................................................29 第三章、實驗方法....................................................................................31 3.1 實驗流程圖.................................................................................31 3.2 實驗材料.....................................................................................32 3.2.1 光學玻璃球.......................................................................32 3.2.2 基材及鍍膜材料...............................................................34 3.3 實驗設備.....................................................................................35 3.3.1 IR 加熱爐...........................................................................36 3.3.2 PID 控制面板.....................................................................37 3.3.3 氣體流量計........................................................................37 3.3.4 冰水機................................................................................38 3.3.5 CCD 攝影裝置...................................................................39 3.3.6 砂輪研磨機........................................................................39 3.4 實驗分析設備.............................................................................40 3.4.1 鑽石切割機........................................................................40 3.4.2 鍍金機................................................................................40 3.4.3 高解析場發射式電子顯微鏡.............................................41 3.4.4 能量散布分析儀EDS........................................................41 3.5 實驗步驟....................................................................................42 3.5.1 高溫濕潤實驗....................................................................42 3.5.2 實驗方法............................................................................43 3.5.2.1 玻璃球在900 C 高溫濕潤實驗............................43 3.5.2.2 玻璃球在600 C100 次的熱循環實驗..................44 第四章、結果與討論...............................................................................46 4.1 溫度對玻璃與基材濕潤角之影響............................................46 4.2 N2保護氣體對高溫濕潤角之影響............................................49 4.3 玻璃與基材高溫介面反應.........................................................51 4.3.1 Glass(底材)/Al2O3-SiO2(膜)基材與玻璃球之反 應........................................................................................51 4.3.2 SiC 基材與玻璃球反應......................................................52 4.3.3 Si(底材)/Pt(膜)基材與玻璃球反應.........................56 4.3.4 M42鋼(底材)/CrBN(膜)基材與玻璃球反應...........58 4.3.5 Sapphire(底材)/ GaN(膜)基材與玻璃球反應..........61 4.4 玻璃球在600 C100次的熱循環實驗後之介面反應................68 第五章、結論...........................................................................................73 第六章、參考文獻...................................................................................75
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