| 复合连接材料LCC/SDC的制备及低温烧结研究 |
| Synthesis and Low-Temperature Sintering Behavior of LCC/SDC for Interconnect Material |
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| 摘要: 采用微波辅助配合物燃烧法分别制备了La0.8Ca0.2CrO3-δ(LCC)与Sm0.2Ce0.8O2-δ(SDC)两种原料，并按设定比例将两种粉体混合以制备复合连接材料。用X射线衍射(XRD)分别对粉体和烧结体的物相进行分析，用Archimedes排水法测量体积密度并计算烧结品的相对密度，采用扫描电镜(SEM)对烧结体的微观结构进行表征，采用四端探针法测量电导率，用热膨胀仪 |
| 关键词: IT-SOFC LCC/SDC 复合连接材料 |
| 基金项目: |
| Abstract: The interconnect material, LCC and SDC were prepared by a microwave assisted sol-gel auto-ignition processes, then the composite interconnect material were prepared by mixing LCC and SDC powders. The phase of the powders and sintering sample were analyzed by X-ray powder diffraction, the relative density of the ceramics was measured by Archimedes method, the microstructure of LCC/SDC was observed by SEM, and the electrical conductivity of the samples was measured by four-probe technique. XRD showed that the sample presents the two phases, one is the perovskite-type phase of LCC, another is the cubic fluorite structure of SDC. The sample sintered at 1 200 ℃ in air for 5 h showed a relative density of 94.6%, the electrical conductivity reached 39.3 S·cm-1. The thermal expansion coefficient of LCC/SDC was 11.4×10-6 K-1. All results revealed that the LCC/SDC may be a well composite interconnect material of IT-SOFC. |
| Keywords: IT-SOFC LCC/SDC composite interconnect material |
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| 卢肖永,丁岩芝,徐 俊,陈永红.复合连接材料LCC/SDC的制备及低温烧结研究[J].无机化学学报,2009,25(8):1366-1370. |
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