| 研究生: |
鄭皓尹 Cheng, Hao-Yin |
|---|---|
| 論文名稱: |
晶片電感之端面銀漿研究 A study on the termination silver pastes for chip inductors |
| 指導教授: |
向性一
Hsiang, Hsing-I |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 資源工程學系 Department of Resources Engineering |
| 論文出版年: | 2013 |
| 畢業學年度: | 101 |
| 語文別: | 中文 |
| 論文頁數: | 79 |
| 中文關鍵詞: | 銀漿 、燒結 、界面反應 、有機載體 、黏度 |
| 外文關鍵詞: | Silver pastes, Sintering, Interfacial reaction, Binder, Viscosity |
| 相關次數: | 點閱:86 下載:0 |
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本研究之目的在開發出具有良好移印能力及附著力之表面黏著型電感用端面電極銀漿。電感用端面電極銀漿主要的組成為銀粉、玻璃、有機載體三大成分,本文詳細探討不同玻璃組成(不同比例的硼含量與鉍含量)、不同的球狀與片狀銀粉比例及不同玻璃添加量對銀漿燒結緻密行為及顯微結構之影響,及對端面附著力及推力之影響。結果發現適當的調整玻璃組成中之硼(40wt%)、鉍(6.5wt%)含量、可降低銀漿的燒結緻密化溫度。添加適量之片狀銀粉具有導電架橋的功能,但是過量的添加將會導致玻璃於燒結時溢流到表面,使得孔隙增多,最佳的片球比約為4:6。此外,增加銀漿中玻璃含量的比例(15wt%),也可有效的增進緻密效果。有機載體部分,分子量越高之乙基纖維素可提高漿料流變性,但相對會提高漿料黏度,使移印不易進行。固含量是決定銀漿低轉速下的黏度指標,高轉速下主要是藉由乙基纖維素與溶劑改變黏度。
The purpose of this study is to develop termination silver pastes which exhibit good printability and good adhesion.Termination silver pastes are composed of silver powder, glass powder, and organic vehicle. The effects of the amounts and chmical compositions of the glasses (different ratios of the boron content and bismuth content) , ratio of spherical and flake silver on the densification and microstructure of silver terminantion pastes.The results showed that the densification temperature could be reduced by adjusting the contents of boron and bismuth in the glass. Adding an appropriate amount of flaky silver powder can increase the bridging function, but adding excess will cause the glass to overflow to the surface during sintering, and hence result in the increase of pores. The optimal ratio of flaky and spherical silver powder is 4:6. Moreover, the densification increased with increasing the glass content in the silver paste. For the organic vehicle, the higher molecular weight of the ethyl cellulose can improve the thixotropy, but it will increase relative viscosity, which deteriorate the printability. The relative viscosity of the silver paste at low rotating speed was controlled by the solid content and the relative viscosity at high rotating speed was controlled by the viscosity of the vehicle.
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校內:2023-12-31公開