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中文摘要：
设计与开发了液料送粉系统，开展液料等离子熔射工艺制备SOFC电解质层的研究，并与大气等离子熔射制备结果进行比较。结果表明，致密电解质层的孔隙率1．61％，基本满足SOFC对电解质致密性的要求；较之于常规的大气等离子熔射制备工艺，液料等离子熔射制备的电解质层的厚度均匀性和致密性均得到了很大改善，有助于提高其导电性能；晶粒尺寸较小，有利于制备致密电解质涂层。
英文摘要：
A liquid feedstock system was designed and developed,and the new process of suspension plasma spraying （SPS） was studied and applied to prepare the electrolyte of solid oxide fuel cell （SOFC）, a new power source. Experimental results show that the porosity of the resultant electrolyte is 1.61%, which can meet the basic operating requirements of SOFC cells. Comparing with the electrolyte layer fabricated by atmospheric plasma spraying （APS）, higher densification and more uniform thickness of the layer by SPS are observed,which are helpful to effectively improve its electrical conductivity. Moreover, the grain size of the electrolyte layer fabricated by SPS is smaller than that by APS, which is more favorable to obtain the dense electrical layers of SOFCs.
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