文档介绍：毕业设计论文
等离子喷涂法制备SOFC连接体材料保护涂层
摘要:作为高性能固体氧化物燃料电池的关键组件之一——连接板主要起着在相邻的电池之间传输电子和分隔燃料与相邻电池氧化剂的作用,金属连接板以其低成本的优势成为研究的重点内容。为了延长其使用寿命降低腐蚀和氧化的速度,通常采用烧结法、电化学气相沉积法、化学气相沉积法、等离子喷涂等技术在连接板上增加一层保护膜。其中,等离子喷涂法具有不受基体材料尺寸、喷涂材料等条件限制,在快速、低成本制备SOFC部件方面具有明显的优势。 (LSM)保护薄膜,优化了在SUS430基体上等离子喷涂LSM保护薄膜的工艺流程及工艺参数;采用XRD, SEM分别分析了薄膜的成分,表面与截面形貌;对比了喷涂前后LSM粉体的成分与相结构变化;用二支点法测量了有与无LSM保护膜时,金属连接板的电导率。实验得出了较好的结果:喷涂前后粉末的衍射峰的强度、宽度和位置均没有发生变化。元素分布均匀,不含其它的杂质元素,证明了等离子喷涂LSM薄膜没有引起LSM的相和化学成份的变化,该方法能够用于SUS430金属合金上喷涂LSM保护膜。采用等离子喷涂法制备的LSM保护膜与粘结层、粘结层与基体结合良好。
关键词:等离子喷涂、固体氧化物燃料电池、金属连接板
Abstract
As an energy conversion device, Solid Oxide Fuel Cell (SOFC) has arisen high attention from the world for its high efficiency and low pollution. Plasma spray, which is not limited by base's size or material, has clear advantage in fast and low-cost preparation of ponent. So, study on preparation of ponent by plasma spray, in this article, has important social and actual economic purports to our national future energy resource and sustainable development strategy. With reduction of SOFC's operating temperature, at present, metal can be used as material of interconnect, which reduced cost of cell system, and elevated petitive capacity. (LSM) was deposited on SUS430 using air plasmas spray (APS) in this paper. Effect of spraying parameters on physical and electrochemical characteristic of film during a course of preparation was invested; Membrane-electrode assembly (MEA) which included anode, electrolyte and cathode, was deposited on anode-supported using air plasmas pray.
Key words: Plasma Spray, Solid Oxide Fuel Cell,Metal Interconnect
目录
1
引言 1
燃料电池概述 2
. 燃料电池原理 2
. 燃料电池的分类 2
固体氧化物燃料电池 3
SOFC的关键部件 3
SOFC连接板材料 4
陶瓷材料 4
金属材料 5
国内外连接板的研究现状 5
本文研究内容 6
7
等离子喷涂技术 7
等离子喷涂的原理 7
等离子喷涂的特点 7
等离子喷涂装置 8
等离子喷涂工艺流程 8
等离子喷涂工艺参数与应用 8
小结 9
3. 等离子喷涂制备SOFC连