Ag-Cu-Ti合金与ZrO₂陶瓷的润湿性及界面特征

刘玉华¹，庄  宇²，胡建东¹，韩先贺¹

（1. 吉林大学材料科学与工程学院，吉林 长春130025；

2.大陆汽车电子（长春）有限公司 发动机动力系统部，吉林 长春 130033）

摘 要：通过改良座滴法研究了Ag–Cu–Ti/ZrO₂陶瓷体系的润湿行为和界面特征^[1]。采用ADSA (axisymmetric drop shape analysis)–SESDROPD分析软件，X射线衍射仪（XRD），场发射扫描电镜(FESEM)以及配有能谱仪(EDS)的扫描电镜(SEM)测量表征了温度变化下，不同Ti含量的Ag–Cu–Ti合金在ZrO₂陶瓷基板上的润湿性及其界面微观结构的影响规律。结果表明：Ag–Cu–Ti/ZrO₂陶瓷体系的润湿机制为反应性润湿。Ag–Cu–Ti合金在ZrO₂陶瓷基板上的润湿性随Ti含量的增加逐渐改善。Ag₅₄Cu₄₃Ti₄合金熔体在ZrO₂陶瓷基板上的润湿性对温度具有明显的反常依赖性，Ag₅₃Cu₄₁Ti₆合金的润湿性较好。随温度的升高，Ag₅₄Cu₄₃Ti₄/ZrO₂和Ag₅₃Cu₄₁Ti₆/ZrO₂界面反应产物TiO反应层逐渐增厚，Cu₃Ti₃O反应层有逐渐变薄的趋势。Ag₅₀Cu₄₀Ti₁₀/ZrO₂的界面，出现大块状的金属间化合物Cu₃Ti₃O，容易使合金和陶瓷界面发生剥离。

关键词：座滴法；Ag–Cu–Ti/ZrO₂；润湿性；界面特征

       中图分类号：TG13；TG148；TG454；TG 115.21⁺5.3    文献标识码：A      doi:10.3969/j.1000-6281.2014.01.006

Wettability and interface characteristics of Ag–Cu–Ti/ZrO₂ system

LIU Yu-hua¹, ZHUANG Yu², HU Jian-dong¹, HAN Xian-he¹

(1.Colleges of Materials Science and Engineering, Jilin University, Changchun Jilin 130025；2. PESH, Continental Automotive Changchun Co Ltd, Changchun Jilin 130033，China)

Abstract:Wettability and interface characteristics of Ag–Cu–Ti/ZrO₂ system were studied by an improved sessile drop method. Wettability and interface morphology of Ag–Cu–Ti/ZrO₂ system were investigated in detail by ADSA (Axisymmetric drop shape analysis)–SESDROPD, X-ray diffractometer (XRD), Field emission scanning electron microscopy (FESEM) andscanning electron microscopy (SEM)with spectrometer (EDS). The results show that: the wetting of molten Ag–Cu–Timetallic glass alloy on the ZrO₂ substrate belongs to the reactive wetting.With the increase in the content of Ti, the wettability of Ag–Cu–Ti/ZrO₂ systems are improved significantly. There is the anomalous dependenceof wettability of Ag₅₄Cu₄₃Ti₄/ZrO₂ system on the temperatures. Ag₅₃Cu₄₁Ti₆ alloy has good wettability.With the increase of temperature,Ag₅₄Cu₄₃Ti₄/ZrO₂ and Ag₅₃Cu₄₁Ti₆/ZrO₂ interfaces reaction product TiO phase gradually thickening, Cu₃Ti₃O reaction layer is thinning; Ag₅₀Cu₄₀Ti₁₀/ZrO₂ interface, a big lump of intermetallic compound Cu₃Ti₃O, is easy to result in stripping of alloy and ceramic interface.

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Keywords: sessile drop;Ag–Cu–Ti/ZrO₂; wettability; interface characteristics

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