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研究生： 邱政男
Chen-nan Chiu
論文名稱： 錫-銀-銅-鎳四元系統等溫相平衡與液相線投影圖
Isothermal phase equilibria and liquidus projection of the quaternary Sn-Ag-Cu-Ni system
指導教授： 陳信文 博士
Sinn-wen Chen
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程學系
Department of Chemical Engineering
論文出版年： 2005
畢業學年度： 93
語文別： 中文
論文頁數： 111
中文關鍵詞： 無鉛銲料 、相平衡 、液相線投影圖 、錫-銀-銅-鎳
外文關鍵詞： Pb-free solder, phase equilibrium, liquidus projection, Sn-Ag-Cu-Ni
相關次數： 點閱：3  下載：0 
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    • 錫-鉛合金是現今電子工業上最常用的銲料，然而因為鉛會對人體和環境造成危害，因此工業界一直積極的在尋找可替代的無鉛銲料。Sn-Ag-Cu合金是無鉛銲料中最被看好的無鉛銲料，而Ni是最常作為擴散阻障層的材料，因此Sn-Ag-Cu-Ni四元系統為電子產品中重要的材料系統。四元Sn-Ag-Cu-Ni系統的相平衡與液相線投影圖基本資料，對Sn-Ag-Cu無鉛銲料之工業應用相當重要，然而文獻中之資料非常缺乏。本研究將以實驗量測，來探討210℃及250℃Sn-Ag-Cu-Ni的相平衡圖與液相線投影圖。以電弧融合的方法來製備Sn-Ag-Cu-Ni合金，並將合金置於210℃與250℃的高溫爐中進行熱處理，或將合金從1000℃高溫進行爐冷。以EPMA進行合金生成相之組成分析，並利用XRD做合金生成相的結構分析，配合四個組成的三元相平衡圖及液相線投影圖，以推知四元Sn-Ag-Cu-Ni之相平衡圖及液相線投影圖。
    本研究共測定了Sn-Ag-Cu-Ni四元系統，210℃相平衡之80 at％Sn及90 at％Sn定組成截面圖，250℃相平衡之95 at％Sn及97 at％Sn定組成截面圖，以及四元液相線投影圖在97 at％Sn之定組成截面圖。此Sn-Ag-Cu-Ni四元系統於210℃平衡情形下，在90 at％Sn之定組成截面圖中，存在著Cu6Sn5+Ni3Sn4+Ag3Sn+Sn之四相共存區域，但並未發現有新的三元及四元介金屬相。其二元介金屬相Cu6Sn5與Ni3Sn4相，Cu與Ni間具有很好之彼此互溶性質，但此二相皆幾乎不溶有Ag。實驗結果也顯示210℃相平衡之80at％Sn定組成截面圖，其各相間之關係與90 at％Sn之定組成截面圖相同。在250℃相平衡條件下，於95at%Sn與97at%Sn定組成截面圖，亦未發現有新的三元及四元介金屬相。此二定組成截面圖之相平衡關係相同，皆存在著液相之單相區，Cu6Sn5+L及Ni3Sn4+L兩相區，以及Cu6Sn5+Ni3Sn4+L之三相區。在97at%Sn之液相線投影圖之定組成截面圖中，可以成為第一固化析出相者有Cu6Sn5、Ni3Sn4、Ni3Sn2及Sn。與相平衡實驗所觀察所得之結果相仿，Cu6Sn5與Ni3Sn4幾乎不含Ag。

    摘要 Ⅰ 目錄 Ⅲ 圖目錄 Ⅴ 表目錄 Ⅸ 一、前言 1 二、文獻回顧 6 2-1 相平衡 6 2-1-1 Sn-Ag二元系統相平衡圖 10 2-1-2 Sn-Cu二元系統相平衡圖 11 2-1-3 Sn-Ni 二元系統相平衡圖 12 2-1-4 Ag-Cu二元系統相平衡圖 14 2-1-5 Ag-Ni二元系統相平衡圖 14 2-1-6 Cu-Ni二元系統相平衡圖 15 2-1-7 Sn-Ag-Cu三元系統相平衡圖 16 2-1-8 Sn-Ag-Ni三元系統相平衡圖 21 2-1-9 Sn-Cu-Ni三元系統相平衡圖 22 2-1-10 Ag-Cu-Ni三元系統相平衡圖 23 2-1-11 Sn-Ag-Cu-Ni四元系統相平衡圖 24 2-2 液相線投影圖 27 2-2-1 Sn-Ag-Cu三元系統液相線投影圖 27 2-2-2 Sn-Ag-Ni三元系統液相線投影圖 28 2-2-3 Sn-Cu-Ni三元系統液相線投影圖 29 2-2-4 Ag-Cu-Ni三元系統液相線投影圖 30 2-2-5 Sn-Ag-Cu-Ni四元系統液相線投影圖 31 2-3 相圖計算 34 三、研究方法 38 3-1 Sn-Ag-Cu-Ni 四元平衡相圖 38 3-1-1 合金之製備及熱處理 38 3-1-2 金相分析 39 3-2 Sn-Ag-Cu-Ni 四元液相線投影圖 41 3-2-1 合金之製備及金相分析 41 3-3 相圖計算 41 四、結果與討論 43 4-1 Sn-Ag-Cu三元系統於210℃之相平衡 43 4-2 Sn-Ag-Ni三元系統於210℃之相平衡 45 4-3 Sn-Cu-Ni三元系統於210℃之相平衡 47 4-4 Ag-Cu-Ni三元系統於210℃之相平衡 48 4-5 Sn-Ag-Cu-Ni四元系統相平衡 48 4-5-1 定90at%Sn之相平衡圖(210℃) 58 4-5-2 定80at%Sn之相平衡圖(210℃) 68 4-5-3 定95at%Sn之相平衡圖(250℃) 76 4-5-4 定97at%Sn之相平衡圖(250℃) 84 4-6 Sn-Ag-Cu-Ni四元系統液相線投影圖 93 五、結論 104 六、參考文獻 107

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