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Damage mechanisms and lifetime behavior of plasma sprayed thermal barrier coating systems for gas turbines-Part I: Experiments.

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Damage mechanisms and lifetime behavior of plasma-sprayed thermal barrier coating systems for gas turbines - Part II: Modeling.

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Damage mechanisms, life prediction, and development of EB-PVD thermal barrier coatings for turbine airfoils.

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Damage modes and mechanisms of Si-Ge films under prompt soft X-ray radiation

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Thermal and residual stresses in films exposed to sudden temp. changes are analyzed based on elastoplastic-brittle idealization of film response. Results explain qualitatively damage mechanisms of various failure modes observed in Si-Ge film deposited onto single-crystal Si substrates exposed to soft X-ray radiation for short periods.

Damage modes and mechanisms of Si-Ge films under prompt soft X-ray radiation

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Thermal and residual stresses in films exposed to sudden temp. changes are analyzed based on elastoplastic-brittle idealization of film response. Results explain qualitatively damage mechanisms of various failure modes observed in Si-Ge film deposited onto single-crystal Si substrates exposed to soft X-ray radiation for short periods.

Damage modes and mechanisms of Si-Ge films under prompt soft X-ray radiation

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Thermal and residual stresses in films exposed to sudden temp. changes are analyzed based on elastoplastic-brittle idealization of film response. Results explain qualitatively damage mechanisms of various failure modes observed in Si-Ge film deposited onto single-crystal Si substrates exposed to soft X-ray radiation for short periods.

Damage of repeatedly nitrocarburised steel dies for aluminium extrusion.

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Damage Processes and Substrate Surface Design for CVD Diamond Films

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Damage Processes of CVD Diamond Films by Cyclic Impact

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Application of CVD diamond (CVDD) to cutting tools is well known, however, sufficient utility in practice has not been achieved yet. The biggest technical problem is delamination caused by strong impact in cutting work piece materials. On the other hand, diamond has many specific properties compared to other hard materials. When used under conditions where strong mechanical impact is induced, CVDD films are expected to show unique behavior as compared to other conventional hardness films. In order to improve the adhesion of CVDD films, it is very important to reveal the damage processes of CVDD films caused by impact. A study is presented, of damage processes of CVDD films by cyclic impact via observations by a mechanically scanned acoustic microscope. Based on these investigations, a model for the damage of CVDD films is proposed. Damage of CVDD films is triggered by the occurrence of cracks. Extension of cracks to the top surface and delamination around the cracks are gradually extended, and finally CVDD films are peeled off along the cracks from the substrate.

Damage quantification in TBCs by photo-stimulated luminescence spectroscopy

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Damage ranges in metals after ion implantation

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Damage tolerant functionally graded WC-Co/Stainless Steel HVOF coatings.

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Damage-free polishing of polycrystalline silicon

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JES Nalcoag polishing technique for polycrystalline Si resulted in grain-to-grain surface height variation of ca.< 0.05 µm. Slope of surface profile at grain boundaries is gentle, and no 'grooving' at grain boundaries is observed. Properties are important for probing grain boundaries, electrically and/or optically, along sample surface. SPV monitoring showed extent of surface damage to be minimal. Technique has facilitated measurement of absorption coeff. for wavelengths near bandedge, spectroscopic measurements of impurities like O2 and defect delineation by chemical etching.

Damage-resistant coatings for the automotive industry

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Exterior (and hence visible) coating should be as damage resistant as possible, either as such or in not showing the effects of scratches etc. As yet, no single coating offers these attributes, but BASF Coatings are developing a range of solutions from clearcoat and dispersion coatings to sol-gel coatings.

Damascene Chemical-Mechanical Polishing Characterization and Modelling for Polysilicon Microelectromechanical Systems Structures.

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JES