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The interaction of surface cracking and interfacial delamination in thermal barrier coatings under tension is investigated by using a cohesive zone finite element model. It is found that the surface crack density has a significant effect on the initiation and propagation of interfacial delamination. The interfacial delamination length decreases with increase of the surface crack density. The influence...
The influence of sputtering pressure on the electron emission properties of Si tips coated with N-doped SrTiO 3 ultrathin films was investigated. X-ray diffraction studies revealed that the N-doped SrTiO 3 films deposited at different pressures remain the perovskite structure. However, the threshold electric field of electron emission decreased markedly when the sputtering pressure...
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