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研究生: 江惠茹
Chiang, Hui-Ju
論文名稱: 球磨處理含鈀銀銅分散合金對分散型 含鈀汞齊合金性質之影響
Effect of Ball Milling of Pd-Containing Ag-Cu Dispersant Alloy on Properties of Dispersed Pd-Containing Amalgam
指導教授: 陳瑾惠
Chern Lin, Jiin-Huey
朱建平
Ju, Chien-Ping
學位類別: 碩士
Master
系所名稱: 工學院 - 材料科學及工程學系
Department of Materials Science and Engineering
論文出版年: 2003
畢業學年度: 91
語文別: 中文
論文頁數: 78
中文關鍵詞: 汞齊合金
外文關鍵詞: Pd, Amalgam
相關次數: 點閱:62下載:1
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  • 牙科用汞齊合金,主要是以銀、銅與錫之合金粉末和汞混合而成的合金,其他也有添加少量金屬(如鋅、銦、鈀等)以改善其性質。在汞齊合金中添加微量的鈀,可改善汞齊合金的機械性質、抗腐蝕性與抗潛變性。
    本實驗主要是利用A處理改變汞齊合金中的Ag-Cu-Pd球型合金粉末的形狀,探討A處理及B處理對汞齊合金的初始汞蒸氣釋出量、抗壓強度、徑向抗拉強度與潛變量等機械性質的影響,並與商用汞齊合金比較。
    實驗發現AmB10H3有較低的初始汞蒸氣釋出量,接近商用合金Tytin的釋出量,且比商用汞齊合金Dispersalloy的初始汞蒸氣釋出量更低。在機械性質方面,AmB10H3具有最高之一小時抗壓強度,較商用汞齊合金Dispersalloy高。AmB10H3具有最高之一小時徑向抗拉強度,較商用汞齊合金Dispersalloy高,而24小時徑向抗拉強度是最高,較Dispersalloy高。另外,AmB10H3之潛變量則遠低於Dispersalloy低。
    綜合上述的結果,我們發現藉由對Ag-Cu-Pd分散合金以A處理可改變其形狀成不規則型,進而大幅降低汞齊合金的初始汞蒸氣釋出量,並大幅提高其一小時抗壓強度,且有其他不錯的性質表現。

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    摘要 ………………………………………………………………… I 總目錄 ……………………………………………………………… II 表目錄 ……………………………………………………………… V 圖目錄 ……………………………………………………………… VI 第一章 研究動機 ……………………………………………… 1 第二章 簡介………………………………………………………3 2-1 汞齊合金之歷史發展 ……………………………………3 2-2 汞齊合金之汞齊化反應及其結構 ………………………5 2-2-1 低銅合金 …………………………………………………5 2-2-2 高銅合金 …………………………………………………6 2-3 合金粉末的分類 …………………………………………6 2-3-1 球型合金粉末 ……………………………………………6 2-3-2 不規則型合金粉末 ………………………………………7 2-3-3 混合型合金粉末 …………………………………………7 2-3-4 球型及不規則型汞齊合金性質之比較 …………………8 2-4 Ag-Cu-Pd 合金之微結構分析 …………………………8 2-5 汞齊合金之冷熱疲勞性質 ……………………………10 2-6 有關汞之毒性的報導 ……………………………………11 2-7 汞齊合金之汞蒸氣釋出機制 ……………………………12 第三章 材料與實驗方法 …………………………………… 18 3-1 合金粉末之製造與處理 …………………………………18 3-1-1 粉末真空玻璃封管 ………………………………………18 3-1-2 Ag-Cu-Pd合金粉末之XRD相鑑定 ………………………19 3-1-3 Ag-Cu-Pd合金粉末之SEM觀察 …………………………19 3-1-4 合金粉末之粒徑分佈計算 ………………………………21 3-1-5 富銅合金與富銀合金之製作 ……………………………21 3-2 汞齊合金試片之製作 ……………………………………22 3-2-1 合金粉末之混汞量測試 …………………………………22 3-2-2 汞齊合金試片之製作 ……………………………………23 3-3 汞齊合金試片性質之測試 ………………………………23 3-3-1 汞齊合金XRD分析 …………………………………………23 3-3-2 汞齊合金試片初始汞蒸氣釋出量之測試 ………………24 3-3-3 抗壓及徑向抗拉強度之測試 ……………………………25 3-3-4 潛變測試 …………………………………………………25 第四章 結果與討論 …………………………………………… 27 4-1 球型含鈀汞齊合金粉末之A處理對含鈀汞齊合金汞釋出之影響………………………………………………………… 27 4-1-1 粒徑分布觀察………………………………………… 27 4-1-2 不同A處理對初始汞蒸氣釋出量之影響 ……………… 27 4-2 球型Ag-Cu-Pd合金粉末之B處理對含鈀汞齊合金性質之影響…………………………………………………………… 27 4-2-1 Ag-Cu-Pd 粉末不同B處理對初始汞蒸氣釋出量之影響…………………………………………………………… 32 4-3 球型Ag-Cu-Pd合金粉末之A處理對含把汞齊合金性質之影響………………………………………………………… 32 4-3-1 Ag-Cu-Pd 合金粉末A處理對汞齊合金混汞量之影響 ………………………………………………………… 32 4-3-2 Ag-Cu-Pd 合金粉末A處理對汞齊合金微觀結構之影響 ………………………………………………………… 35 4-3-2-1 XRD相分析 …………………………………………… 35 4-3-2-2 SEM顯微組織觀察 …………………………………… 36 4-3-2-3 元素分析(EDS)與線掃描(Line scan) ……… 36 4-3-3 含銀成分較高之合金與含銅成分較高之合金與汞之 反應富銅相與富銀相與汞之反應 …………………… 48 4-3-3-1 XRD相分析 ……………………………………………… 48 4-3-3-2 SEM顯微組織觀察 ……………………………………… 52 4-3-4 Ag-Cu-Pd 合金粉末A處理對汞齊合金初始汞蒸氣釋出量之影響…………………………………………………………… 52 4-3-5 Ag-Cu-Pd 合金粉末B處理對汞齊合金機械性質之影響…………………………………………………………… 63 4-3-5-1 抗壓強度測試 ………………………………………… 63 4-3-5-2 徑向抗拉強度測試 ………………………………………64 4-3-5-3 潛變測試 …………………………………………………68 第五章 結論 …………………………………………………… 72 第六章 參考文獻 ……………………………………………… 74

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