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OALib Journal期刊
ISSN: 2333-9721
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浆料组成对锰酸锶镧薄膜微结构和性能的影响
Abstract:
用丝网印刷法在氧化铝基底上制备了La0.6Sr0.4MnO3薄膜,通过扫描电镜、能谱仪和四探针测试仪分析了薄膜的显微组织、元素分布及导电性。研究了浆料组成对丝网印刷成膜效果、薄膜与基底的结合力和导电性的影响。结果表明松油醇作溶剂的浆料比去离子水的成膜效果好,当松油醇加入量为50%～70%(质量分数,下同)时,制成的薄膜均较平整,但存在微裂纹。浆料中加入添加剂乙基纤维素(ethylcellulose,EC)时,薄膜的微裂纹明显减少,但随EC量增加,薄膜中孔洞增加;实验得出EC的最优加入量为1%。浆料中加入低熔点相熔块粉时可以提高薄膜与基底的结合力,但会显著降低薄膜的导电性。
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