在固態氧化物燃料電池系統中，鎳-釔安定化氧化鋯陶金為目前較為普遍的陽極材料的選擇；而雙極板部分主要以不鏽鋼材料較為熱門。本研究旨在探討真實操作環境下所產生陽極與雙極板間的界面反應以及封裝材料的長期穩定性。
為暸解界面反應的生成物，首先對Cr-Fe-Ni三元合金相平衡圖進行研究。以目前固態氧化物燃料電池操作的溫度範圍750至850℃為選擇，配置不同組成的三元合金進行相與結構的分析。並基於此初步研究，探討Fe-Cr / Ni反應偶的界面反應，當Fe-Cr合金組成為Fe-16wt% Cr時，界面主要為γ與γ+α’的兩相混合區。隨著Cr含量與反應時間的增加，α’析出相數量增加並整齊排列於界面處。與文獻上採取在真空下反應的實驗結果比較，無論是反應層的出現順序與界面組織形態等皆無太大改變。α’相在Fe - 94wt% Cr / Ni的750℃大氣下反應360小時並未出現均勻連續的反應層。
本研究亦探討以商用活性填料接合雙極板430SS與陽極Ni-YSZ之行為，採真空硬銲的方式進行。在430SS/活性填料/8YSZ的液/固反應中，主要生成相為TiO與Cu-Ti-O的化合物，隨著溫度與持溫時間的增加，Cu-Ti-O化合物會逐漸溶回填料基地內。在靠近不鏽鋼端的生成物以EPMA進行 mapping，顯示其主要組成為Cu-Ti化合物。隨著反應溫度與時間的增加，Ti原子會不斷往界面擴散，填料基地組織最後只剩富Cu區、富Ag區與Cu-Ag共晶。將真空硬銲的接合結果進行700、750℃時效反應，反應時間為24小時。實驗結果顯示在長時間的高溫時效後，在靠近8YSZ端的界面，TiO相會轉為穩定的TiO2相，而Cu與Ag原子亦會擴散穿越氧化鈦層。Cu原子隨即與存在於界面的O原子反應生成CuO與Cu2O。Ag原子仍與富Ag區存在於界面。同樣的，O原子亦會擴散進入填料基地與原先的富Cu區反應生成CuO。隨著反應溫度與時間的增加，TiO2反應層會逐漸溶回基地形成鬆散結構，亦提供Cu、O、Ag原子的擴散路徑。

Nickel- Yttria stabilizied Zirconia (Ni-8YSZ) cermet is the universal material in the Solid Oxide Fuel Cell (SOFCs) system presently. The popular material of interconnector is stainless steel. This study confers to the interfacial reaction between the anode and the interconnector and the stability of the sealing material for long-range used mainly.
In order to realize the products of the interfacial reaction, this study work to Cr-Fe-Ni ternary phase diagram first. Choose the 750-850℃working range of the SOFCs being reaction temperature, and prepares different ternary alloys for the analysis of the phase and the structure. This study confers the interfacial reaction of the Fe-Cr/Ni reaction couple based on it. When the component of the Fe-Cr alloy is Fe-16wt%Cr, there are γ phase and γ+α’ mixing zone exist the interface. With the increasing of the amount of the chromium and reaction time, the increasing the amount of the α’ phase and spread regularly in the interface. Compare the experimental result of papers that carried out in sealed to keep vacuum. It have a few different regardless of the sequence of the reaction layers and the interface morphology. There is no continuous α’ reaction layer for Fe-94wt%Cr/Ni reacts for 360 hours at 750℃ in atmosphere.
This study also confers to the brazing behavior of the 430stainless steel (430SS) interconnector and the Ni-8YSZ by using the commercial active filler that adopt in vacuum brazing. The mainly reaction layers are TiO and Cu-Ti-O compounds in the liquid/solid interfacial reaction of the 430SS/active filler/8YSZ. The Cu-Ti-O compounds will dissolve into the filler base structure with the increasing of the reaction temperature and time. The mapping result shows that there is Cu-Ti compound in the interface near the 430SS by EPMA. The titanium atoms will diffuse into the interface continuously with the increasing of the reaction temperature and time, that there are Cu-rich, Ag-rich and Ag-Cu eutectic in the filler base structure finally. To carried the brazing results out the 700, 750℃aging reaction, and the aging time is 24 hours. The experimental results show that the TiO will trans to TiO2 after aging reaction in the interface near the 8YSZ. Cu and Ag atoms diffuse through the TiO2 reaction layer into the interface, and react to CuO and Cu2O with the oxygen atoms that exist in the interface. The Ag atoms exist the interface in Ag-rich form. Similarly, the oxygen atoms diffuse into the filler base structure, and react with the Cu-rich formerly in the filler become to CuO, and TiO2 reaction layer will dissolve into the filler back and trans to the loose structure gradually with the increasing of the reaction temperature and time, that also provides the diffusion path for Cu, O and Ag atoms.

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