典型文献
Critical scale grain size for optimal lifetime of TBCs
文献摘要：
Thermal barrier coatings(TBCs)suffer from spalling failure resulting from the rapid growth of thermally grown oxides(TGO)on the metallic bond coat.In this study,to achieve the optimal lifetime of TBCs,a lifetime phase diagram was constructed for the entire service of TBCs.Herein,both the thermal mismatch stress during thermal cycling and the TGO growth stress during thermal exposure were considered.First,thickening behavior of the Al2O3 scale related to grain size was investigated.Second,transverse delami-nation failure due to the thermal mismatch stress was analyzed.Third,vertical cracking failure related to early scale growth was explored.Finally,a critical scale grain size of～2.5 μm was identified for achiev-ing the optimal lifetime of TBCs.It was experimentally proved that vertical cracking of the Al2O3 scale occurred during early oxidation as the scale grain size was larger than～4 μm after pre-oxidation.The proposed lifetime phase diagram and critical scale grain size effect serve as novel criteria for the design of next-generation durable TBCs.
文献关键词：
中图分类号：
作者姓名：
Lin Chen;Guo-Hui Meng;Chang-Jiu Li;Guan-Jun Yang
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
文献出处：
引用格式：
[1]Lin Chen;Guo-Hui Meng;Chang-Jiu Li;Guan-Jun Yang-.Critical scale grain size for optimal lifetime of TBCs)[J].材料科学技术（英文版）,2022(20):241-250
A类：
delami
B类：
Critical,scale,grain,size,optimal,lifetime,TBCs,Thermal,barrier,coatings,suffer,from,spalling,failure,resulting,rapid,growth,thermally,grown,oxides,TGO,metallic,bond,In,this,study,achieve,phase,diagram,was,constructed,entire,service,Herein,both,mismatch,stress,during,cycling,exposure,were,considered,First,thickening,behavior,Al2O3,related,investigated,Second,transverse,nation,due,analyzed,Third,vertical,cracking,early,explored,Finally,critical,identified,It,experimentally,proved,that,occurred,oxidation,larger,than,after,pre,proposed,effect,serve,novel,criteria,design,next,generation,durable
AB值：
0.512158
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
