近年來固態氧化物燃料電池(SOFC)的開發及應用被賦予高度的關注，尤其在於平板型之電池堆設計。SOFC 操作溫度約800℃，金屬連接板在此高溫長時間之運轉過程中易生成氧化膜，其氧化膜由不同的形狀或不同成分之氧化物所組成，且氧化膜厚度可能不是均勻的，隨長時間操作，其氧化膜會過厚且會有剝落現象，將會影響SOFC 之整體效率。為了抑制連接板氧化層的生長速率，藉由氧化層本身的特性來增加金屬材料本身的抗氧化能力，亦即使金屬或合金表面氧化後生成一穩定且緻密的氧化層，以達到抗氧化的目的，所以本研究將著手那些氧化物反應的機制。本計劃執行分為兩部分，研究方法及進行步驟概述如下：第一部分：建立金屬連接板氧化行為相關理論主要為建立金屬連接板氧化行為理論，並以實驗驗證理論之吻合性。並藉由氧化行為分析以了解連接板在電池堆內不同溫度及時間下之變化歷程，可為電池堆設計與完整性分析之參考。第二部分：探討以網印法塗佈鑭鍶鈷鐵或鑭鍶錳之效用以網印法塗佈鑭鍶鈷鐵或鑭鍶錳，討論鑭鍶鈷鐵及鑭鍶錳在高溫下之導電機制與離子傳導性，並更深入討論基材與表面塗層之間元素擴散情形，用以選出較適合金屬連接板的塗層材料，再藉由鍍層理論觀點，進行氧化膜理論分析。表 C011 ; concentrations of harmful gases and led to many problems such as ozone depletion and global warming. A fuel cell is an electrochemical device that combines hydrogen and oxygen to produce electricity. Solid oxide fuel cell (SOFC) is considered to be one of the most promising fuel cell due to its highest efficiency, no nose, and allows the use of natural gas as a fuel. However, high temperature SOFC suffer material constraints, high stress from differential thermal expansion of the cell system, high cost of manufacturing, and problems of long-term stability. Intermediate and high temperature SOFC are expected to overcome the problems related to this high operating temperature. Metallic alloys were selected as the Interconnects materials for operating in the environment of SOFC. The relationship of the oxide formation and the electric conductivity as well as the performance of the materials and the application of metal interconnect in SOFC were studied. For the purpose of this project, the following subjects: (1) Oxidation behavior of raw materials at high temperature oxidation. Effects of the aluminizing treatments on high-temperature oxidation and electric properties. (2) Effects of La-Sr-Mn or La-Sr-Co –Fe coating on the high-temperature oxidation of metallic alloys. The phase formation of La-Sr-Mn or La-Sr-Co –Fe on metallic alloys. 表 C011 ; 研究期間 9801 ~ 9812
