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研究生:高淑文
研究生(外文):Su-Wen Kao
論文名稱:銅鋯鎳基非晶質合金粉末合成及其於鈦合金硬焊製程之研究
論文名稱(外文):Synthesis of amorphous CuZrNi-based brazing filler metals by mechanical alloying and its application in titanium alloy brazements
指導教授:李丕耀
指導教授(外文):Pee-Yew Lee
學位類別:碩士
校院名稱:國立海洋大學
系所名稱:材料工程研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:中文
論文頁數:167
中文關鍵詞:非晶質硬焊機械合金
外文關鍵詞:AmorphousBrazingCopperZirconiumNicklemechanical alloying (MA)
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本研究目的在於以機械合金法,尋求不同原子比例之CuZrNiΧ(Χ=B、C、Si、Al2O3、CeO2、SiC)合金系統形成非晶質化及應用於鈦合金硬焊填料之可行性。
1. 就Cu10Zr70Ni20合金系而言,添加B元素對形成非晶質相具有某些程度上的助益,就X-Ray繞射圖形而言,於Cu10Zr70Ni20內添B元素,使用機械合金方法欲形成非晶質相僅只是球磨時間的問題也就是對粉末施加能量多寡。
2. 摻雜Si元素對Cu10Zr70Ni20合金系而言,Si添加量需小於15at%,綜合X-Ray繞射、熱分析、同步幅射均可證明當Si摻雜量大於15at%時,對形成非晶質相會造成阻礙。
3. (Cu10Zr70Ni20)100-xCx系列當C含量為5at%、10at%隨著機械合金處理時間的增加,其結晶化溫度Tx有升高之趨勢;且在此系列中欲形成非晶質相,其含C量需低於10at%。
4. 就Cu50Zr35Ni15合金系而言,B元素添加量少於10at%時較容易形成非晶質相,此外當摻雜量大於10at%則容易形成化合物。
5. 將Si元素添加至Cu50Zr35Ni15合金系對形成非晶質相具有某些程度上的助益,在添加量5at%、10at%、15at%及20at%均發現Tg點,證實該成分的確形成非晶質相。
6. Cu50Zr35Ni15合金系添加C元素對形成非晶質相具有某些程度上的幫助,在添加量5at%、10at%及15at%均發現Tg點,由X-Ray繞射亦可以證實在20at%形成部分非晶質相。
7.以(Cu10Zr70Ni20)100-xBx作為硬焊填料,可以抑制魏德曼組織生成,避免形成針狀組織;而摻雜Si元素的(Cu10Zr70Ni20)100-x Si x則可以提高潤濕性促進焊件相互間之連結,但是其固液相線溫度過高,易生成針狀組織並不適宜做為硬焊填料。

The objectives of the present research is to study the feasibility of preparing amorphous Cu-Zr-Ni-X (X=B、C、Si、Al2O3、CeO2、SiC) brazing filler metals by mechanical alloying (MA) and its application in the brazing of titanium alloy.
The important experimental results are summarized as follows:
1. In Cu10Zr70Ni20 system, adding small amount of boron was useful in the formation of amorphous powders. From the X-ray diffraction patterns, the Cu10Zr70Ni20 system with B additions can be amorphized after different periods of MA treatments.
2. In Cu10Zr70Ni20 system with Si additions, the amount of Si should be less than 15 at.%.
3. In (Cu10Zr70Ni20)100-xCx system, the amorphous phases can be achieved when C additions are less than 10at.%. It is also found out that the crystallization temperatures of these as-milled powders increased with increasing milling times.
4. In Cu50Zr35Ni15, when the addition of boron was less than 10 at.%, amorphous powders were prepared; while the formation of compounds was observed when the additions was more than 10 at.%.
5. In Cu50Zr35Ni15 system, the amorphization process was speeded up when silicon (up to 20 at.%) was added. Meanwhile, these amorphous powders exhibited glass transition temperatures.
6. In Cu50Zr35Ni15 system, adding C elements (5, 10 and 15 at.%) can help the amorphization reaction. These amorphous powders also exhibited glass transition temperatures. However, a mixture of amorphous and crystalline phases was noticed when 20 at.% of carbon was added.
7. When (Cu10Zr70Ni20)100-xBx were used as the brazing fillers, the formation of a Widmanstatten structure was restrained. For the (Cu10Zr70Ni20)100-xSix system, however, wetting and interlocking of welded parts can be improved, but the welding temperature was too high and the formation of a brittle needle-like structure was hazardous when in use.

目錄
一、前言..............................................1
二、文獻回顧..........................................6
2.1、非晶質合金製程:................................6
2.2、結構分析之判定:................................6
2.2-1、X-Ray 繞射分析:.............................8
2.2-2、延伸X-光吸收精細結構:.......................9
2.3、熱分析:.......................................13
2.4、硬焊製程:.....................................15
2.4-1、氧化物的去除機構:..........................20
2.4-2、表面能與接觸角:............................20
2.4-3、毛細管作用:................................23
2.4-4、接合強度的探討:............................26
三、實驗方法.........................................29
3.1、機械合金處理:.................................29
3.2、粉末結構檢測:.................................30
3.2-1、X-Ray 繞射分析:............................30
3.2-2、延伸X-光吸收精細結構:......................30
3.3、熱分析:.......................................31
3.4、硬焊焊件製備:.................................31
3.5、橫截面觀察:..................................32
四、結果與討論.......................................33
4.1、Cu10Zr70Ni20合金系:...........................33
4.1-1、(Cu10Zr70Ni20)100-xBx:....................33
4.1-2、(Cu10Zr70Ni20)100-xSix:....................35
4.1-3、(Cu10Zr70Ni20)100-xCx:....................35
4.1-4、(Cu10Zr70Ni20)100-x(Al2O3)x:...............36
4.1-5、(Cu10Zr70Ni20)100-x(CeO2)x:................37
4.1-6、(Cu10Zr70Ni20)100-x(SiC)x:.................37
4.2、Cu50Zr35Ni15合金系:...........................38
4.2-1、(Cu50Zr35Ni15)100-xBx:.....................38
4.2-2、(Cu50Zr35Ni15)100-xSix:....................39
4.2-3、(Cu50Zr35Ni15)100-xCx:.....................40
4.3 、添加B:.......................................41
4.4、添加SI:.......................................41
4.5 、添加C:.......................................42
4.6 、硬焊製程:....................................42
五、結論 ............................................45
六、參考文獻.........................................48

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