2002-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/692342摘要：由於使用傳統加熱方式所製作的動態潤溼行為測試裝置，並無法滿足合金在極短時間內快速加熱及冷卻的要求。為了克服此項缺點，本計畫將利用高能量密度紅外線加熱的方式，快速加熱填料(約可高達3000oC/min)到達融點以上並保持一段時間，記錄熔融合金在固體基材上之潤溼行為。藉由上述紅外線快速加熱之原理，所設計的動態潤溼行為測試裝置，將可以應用於各種溫度下，量測活性硬銲填料與氧化鋁基材之動態潤溼行為。本計畫將使用數種銀基活性硬銲填料，分別對純度為95%及99.5%氧化鋁基材之反應潤濕行為進行量測。銀基活性硬銲填料之化學組成包含：Ag-Cu共晶成分中添加1.5或4.5wt% Ti、Ag-Cu共晶組成添加1.5-9wt% Zr或Hf。研究中紅外線硬銲接合試片將進行剪力測試，再以SEM觀察剪力測試後接合試片之破壞面，並使用X光繞射儀進行上述破壞面的結構分析，進而推論其可能的破裂機構。此外，配合對接合界面進行深入的EPMA及STEM分析，可推論其反應潤濕的機構。綜合上述的實驗結果，可歸納出紅外線活性硬銲氧化鋁基材之最佳製程參數。<br> Abstract: The heating rate of a traditional dynamic wetting behavior facility cannot meet the requirement of rapid heating as well as cooling the alloy in a short time period. The way of high energy density infrared heating was used in this research in order to overcome the aforementioned drawback. It can rapidly heat the filler alloy (up to 3000oC/min) to above its melting point, keep for a time period, and record the wetting behavior of the molten alloy on solid substrate. With the aid of rapid infrared heating, the dynamic wetting behavior facility designed and equipped in this study can be extensively applied in measuring the dynamic wetting behavior between active brazing filler and alumina substrate. Many silver-based active braze fillers were used to measure their wetting behavior on alumina substrate with 95% and 99.5% purity. The chemical compositions of silver-base braze fillers include Ag-Cu eutectic plus 1.5 or 4.5 wt%Ti as well as Ag-Cu eutectic plus 1.5 - 9 wt% Zr or Hf. The infrared brazed specimen is evaluated by shear tests. The fractured surface is examined by SEM and XRD, and its fracture mechanism can be inferred. Additionally, the mechanism of reactive wetting can be elucidated with the aid of both the intensive EPMA and STEM analyses. Based upon the above experimental results, optimized process variables of infrared active brazing alumina substrate can be summarized.潤溼行為紅外線硬銲銀基活性硬銲填99.5% 及95%純度氧化鋁wetting behaviorinfrared brazingsilver-base ac