金屬/陶瓷界面工程:介電陶瓷與金屬電極之接著強度研究

Metal/Ceramic Interface Engineering: Adhesion Strength Measurement between Dielectric Ceramic and Electrode Metals

李炤佑(Chao-Yu Lee)

指導教授 ： 段維新 ； Michel DUPEUX

國立臺灣大學/工學院/材料科學與工程學研究所/博士(2007年)

https://doi.org/10.6342/NTU.2007.02869

摘要

本論文是研究金屬與陶瓷界面的機械強度性質，陶瓷是使用商用鈦酸鋇粉，金屬部分為銀膏及鎳膏所製成的金屬膜，膜的成型方是為網版印刷法。使用不同表面性質的緻密鈦酸鋇做為基板，金屬膏覆蓋在陶瓷基板上並在不同溫度下燒結，試片加工製成特殊形狀以符合Blister test的試片形狀要求。
Blister test可以得到量化的介面強度，並可由此得出介面裂縫延伸的所需的能量，在實驗過程中會伴隨著塑性變形，在本實驗中我們提出一個簡單的處理方法以減去塑性變形的影響。在不同銀膠燒結溫度下，銀及鈦酸鋇的界面強度落在4 -7 J/m2 之間，鎳及鈦酸鋇的界面強度約為1 J/m2。
本實驗中嘗試發展三種 indentation 方法來量測相同的金屬與陶瓷界面的強度，經由 normal及 interface indentation 所得出的銀與碳酸鋇的界面強度約為 0.5 J/m2. 第三種測試方法Cross-sectional indentation test 為本研究中發展出的全新測試方法，並提出一種新的理論分析。依照不同的分析模型，所得出的銀與碳酸鋇的界面強度約為 1到3 J/m2.

關鍵字

blister test ； interface indentation test ； cross-sectional indentation test ； 銀 ； 鎳 ； 鈦酸鋇 ； 金屬陶瓷界面 ； 接著強度

並列摘要

The present study investigates the mechanical strength of metal/oxide interface. Ceramic was commercial available BaTiO3. Silver and nickel pastes are used as the metal materials. The metal film was prepared by screen-printing. Specimens with Ag or Ni layer, fabricated at different sintering temperatures, covering dense BaTiO3 substrates with different surface roughness have been prepared with a special geometry appropriate for blister and indentation testing.
The blister test technique allows numerical estimation of interfacial adhesion strength through determination of the interfacial crack propagation energy. A simple method is proposed to correct for generalized plastic straining of silver layer. The average value of Ag/BaTiO3 adhesion strength ranges from 4 J/m2 to 7 J/m2 according to the firing temperature of Ag. For Ni film fired at 1200°C for 2 h on dense barium titanate, the average value is about 1 J/m2
Three indentation tests are developed to measure critical energy release rate of the same metal/oxide interfaces. The average Gci of Ag/BaTiO3 interface is about 0.5 J/m2 according to normal and interface indentation tests. Cross-sectional indentation test has been also successfully performed and a new model for analysis of its results is developed. The average Gci of Ag/BaTiO3 interfaces are obtained from 1 J/m2 to 3 J/m2 according to the models.

並列關鍵字

blister test ； interface indentation test ； cross-sectional indentation test ； silver ； nickel ； barium titanate ； metal/oxide interface ； adhesion strength

參考文獻

[Dannenberg 1961] H. Dannenberg, “Measurement of adhesion by a blister method” Journal of Applied Polymer Science, 5(14), (1961) pp.125-134.

[Evans 1988] A. G. Evans and B. J. Dalgleish, “The edge cracking and spalling of brittle plates” Acta Metallurgica et Materialia, Vol.35, No 6. (1988) pp.1333-1341.

[Evans 1993] A. G. Evans and B. J. Dalgleish, “The fracture resistance of metal-ceramic interfaces” Materials Science and Engineering A, 162, (1993) pp.1-13.

[Knott 1977] J. F. Knott, “Micromechanisms of Fracture and the Fracture Toughness of Engineering Alloys” Fracture, Vol 1, ICF4, (1977) pp. 61-91.

[Lacombe 2006] R. Lacombe, Adhesion measurement methods: Theory and practice (2006), ISBN 0-8247-5361-5.