典型文献
Pressure infiltration of molten aluminum for densification of environmental barrier coatings
文献摘要：
Environmental barrier coatings(EBCs)effectively protect the ceramic matrix composites(CMCs)from harsh engine environments,especially steam and molten salts.However,open pores inevitably formed during the deposition process provide the transport channels for oxidants and corrosives,and lead to premature failure of EBCs.This research work proposed a method of pressure infiltration densification which blocked these open pores in the coatings.These results showed that it was difficult for aluminum to infiltrate spontaneously,but with the increase of external gas pressure and internal vacuum simultaneously,the molten aluminum obviously moved forward,and finally stopped infiltrating at a depth of a specific geometry.Based on the wrinkled zigzag pore model,a mathematical relationship between the critical pressure with the infiltration depth and the pore intrinsic geometry was established.The infiltration results confirmed this relationship,indicating that for a given coating,a dense thick film can be obtained by adjusting the internal and external gas pressures to drive a melt infiltration.
文献关键词：
中图分类号：
作者姓名：
Lin DONG;Mei-Jun LIU;Xiao-Feng ZHANG;Xue-Shi ZHUO;Jia-Feng FAN;Guan-Jun YANG;Ke-Song ZHOU
作者机构：
State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China;National Engineering Laboratory for Modern Materials Surface Engineering Technology,Institute of New Materials,Guangdong Academy of Science,Guangzhou 510650,China
文献出处：
引用格式：
[1]Lin DONG;Mei-Jun LIU;Xiao-Feng ZHANG;Xue-Shi ZHUO;Jia-Feng FAN;Guan-Jun YANG;Ke-Song ZHOU-.Pressure infiltration of molten aluminum for densification of environmental barrier coatings)[J].先进陶瓷（英文版）,2022(01):145-157
A类：
corrosives
B类：
Pressure,infiltration,molten,aluminum,densification,environmental,barrier,coatings,Environmental,EBCs,effectively,protect,ceramic,matrix,composites,CMCs,from,harsh,engine,environments,especially,steam,salts,However,open,pores,inevitably,formed,during,deposition,process,provide,transport,channels,oxidants,lead,premature,failure,This,research,work,proposed,method,which,blocked,these,These,results,showed,that,was,difficult,infiltrate,spontaneously,but,increase,external,gas,internal,vacuum,simultaneously,obviously,moved,forward,finally,stopped,infiltrating,depth,specific,geometry,Based,wrinkled,zigzag,model,mathematical,relationship,between,critical,intrinsic,established,confirmed,this,indicating,given,dense,thick,film,can,obtained,by,adjusting,pressures,drive,melt
AB值：
0.649462
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