臺灣博碩士論文加值系統

本論文是以超聲波脈衝回波法來量測在不同成分以及不同溫度下鈣鋁矽氧化物玻璃的橫向聲速以及縱向聲速。在室溫下， 鈣鋁矽氧化物玻璃的聲速均隨著二氧化矽含量的增加而減少，也隨著溫度的上昇而減少，由聲速以及密度所得各種彈性係數再和Makishima & Mackenzie Model 以及Rocherulle Model 所模擬的彈性係數做比較，可以知道Rocherulle Model在模擬鈣鋁矽氧化物玻璃的彈性係數上有較佳的結果。

The velocities of longitudinal and transverse ultrasonic waves in ten different compositions of calcium aluminosilicate glasses system were measured at room temperature using pulse echo technique at 10 MHz frequency and were measured at temperature between 25℃ and 350℃. At room temperature, the velocities of longitudinal and transverse ultrasonic waves depend upon the composition of calcium aluminosilicate glasses. For each composition of calcium aluminosilicate glasses, the velocities of longitudinal and transverse ultrasonic waves depend upon temperature. The sound velocities also allow the determination of Young‘s modulus, bulk modulus, shear modulus, and Poisson’s ratio. Compare the calculated values of elastic modulus from Makishima and Mackenzie model and Rocherulle model with measured values of elastic modulus, the Rocherulle model shows a better agreement.

摘要
表索引
圖索引
第一章 簡介 1
1-1、玻璃的定義 1
1-2、鈣鋁矽玻璃的介紹 3
第二章 理論模型推導 5
2-1、原子間的相互作用力 5
2-2、離子晶體的晶格能 11
2-3、應用到具離子鍵的玻璃材料 14
第三章 實驗步驟及儀器 21
3-1、玻璃的製作 21
3-2、玻璃的退火 24
3-3、玻璃的性質量測 30
第四章 實驗數據與結果 43
4-1、鈣鋁矽氧化物玻璃系統的密度、折射率、
聲速與玻璃轉換溫度 43
4-2、變溫條件下鈣鋁矽氧化物玻璃之聲速測
量及彈性係數計算 50
第五章 結果與討論 65
5-1、實驗結果與Makishima & Mackenzie模
型的比較65 5-2、實驗結果與Rocherulle修正模型的比較83
5-3、變溫條件下的鈣鋁矽玻璃的彈性性質 82 第六章 結論 95

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