等离子体喷涂纳米结构YPSZ涂层腐蚀行为的研究.pdfVIP

等离子体喷涂纳米结构YPSZ涂层腐蚀行为研究米 林锋1，于月光1，蒋显亮2，曾克里1，任先京1，李敦钫1，李振铎1 (1．北京矿冶研究总院金属材料研究所，北京，100044；2．中南大学材料科学与工程学院，湖南长沙，410083) 摘 要：研究采用等离子体喷涂制备纳米结构YPSZ涂层。通过x射线衍射分析、扫描电子显徼镜对纳米结构YPSZ 涂层的耐腐蚀性与涂层的微观组织结构的关系进行研究。结果表明：由于涂层孔隙尺寸的降低，孔隙率的增大使纳米 结构YPSZ涂层的耐盐腐蚀性能降低，耐高温腐蚀性能提高。纳米结构涂层经过盐腐蚀或高温腐蚀后纳米晶粒明显长大， 并出现微小的晶格变化及相转变现象o， 关键词；等离子体喷涂；纳米结构；腐蚀行为；YPSZ；涂层 YPSZ CorrosionCharacteristicsof Nanostructure Plasma-sprayed Coating LIN Zhen-du01 Yue-guan91，JIANGXian—lian92。RENXian-jin91，LI Fen91．YU andMetallurgy,Beijing (1．BeijingGeneralResearchInstituteofMining South Central 410083) University,Changsha wasfabricated was Abstract：Nanos仉lc眦YPSZ technology．Thecoatingcompositionanalyzed coating byplasmaspraying of The and wereobservedSEM．Thecorrosionresistanceceramic Was IR-FTandXRDo slructure coaling by coa血g porosity by ofthe examinedsaltimmersionand resuksshowthatthecorrosionresistance by hi．ghtemperatureoxygenexperiments．The increase the of is saltand isdecreasedbecauseofthe improved．After coating ofporosity,andpropertyhightemperatureoxygen sizeand transformationareobserved． ofNanostructure corrosion，thegrowth crystallinephase hightemperature behavior；,YPSZ；coating Keywords：plasmaspraying；n孤o