Ag-Cu-Ti合金与ZrO_2陶瓷的润湿性及界面特征

Wettability and interface characteristics of Ag-Cu-Ti / ZrO_2 system

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。

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） and scanning electron microscopy （ SEM） with spectrometer （ EDS） . The results show that：the wetting of molten Ag-Cu-Ti metallic 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 dependence of wettability of Ag54 Cu4 3 Ti4/ZrO2 system on the temperatures. Ag53 Cu41 Ti6 alloy has good wettability. With the increase of temperature, Ag54 Cu43 Ti4/ZrO2 and Ag53 Cu41 Ti6/ZrO2 interfaces reaction product TiO phase gradually thickening, Cu3 Ti3 O reaction layer is thinning;Ag50 Cu40 Ti10/ZrO2 interface, a big lump of intermetallic compound Cu3 Ti3 O, is easy to result in stripping of alloy and ceramic interface.