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Showing 1 to 9 of 9 for “"partially stabilized zirconia"”.
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Near surface wear structure of ceramic components
… applied to ceramic materials of silicon nitride, zirconia toughened alumina, fully and partially stabilized zirconia. A theoretical derivation of the x-ray intensity from a rough sample based on a statistical roughness model was carried out. The statistical model was then combined with the …
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Transformation induced plasticity in ceramics
… the martensitic transformation associated with partially stabilized zirconia, there is no volume change during the cubic-to-tetragonal phase change in BaTi03. In addition, no evidence of microcracking was observed. The enhanced toughness in the vicinity of the transition temperature was …
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Microstructural development, phase stability, and toughening in mullite matrix composites
Mullite matrix composites with partially stabilized zirconia and/or SiC whiskers were fabricated by hot pressing of powders which had been prepared from Al, Si, Zr, and Mg (or Y) alkoxide precursors by a sol-gel process. A series of studies were conducted on microstructural evolution, oxidation …
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The effect of sintering and CMAS on the stability of plasma-sprayed zirconia thermal barrier coatings
… turbine applications comprise (7 wt.%) yttria partially stabilized zirconia (7YSZ). 7YSZ offers a range of attractive functional properties – low thermal conductivity, high thermal expansion coefficient and high in-plane strain tolerance. However, as turbine entry temperatures are raised, the …
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Einfluss von Aluminiumoxid- und Titanoxid-Additiven auf die Thermoschockbeständigkeit von MgO-teilstabilisiertem Zirkonoxid
… i.e. alumina and titania are supplied to MgO partially stabilized zirconia (Mg-PSZ). The Mg-PSZ is partially destabilized during sintering and spinel is formed in situ. Both processes lead to local elongation, which generates internal stresses and finally a crack structure is formed that is …
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Effect of thermal and mechanical loadings on the degradation and failure modes of APS TBCs
… investigated consisted of air plasma-sprayed partially stabilized zirconia (ZrO2-7-8wt.%Y2O3) with a NiCoCrAlY bond coat onto a CMSX-4 substrate and was subjected to six types of tests: (i) isothermal furnace tests, (ii) thermal cycling, (iii) cyclic oxidation, (iv) cyclic oxidation with …
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Bonding mechanisms in the application of thermal barrier coatings to turbine blades.
… of a ceramic thermal barrier coating such as partially stabilized zirconia adhering to an oxidation resistant bond coat, which in turn is bonded to the turbine blade. This is required since partially stabilised zirconia will not readily bond to superalloys. However, the TBC can fail in service …
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Finite element simulation of stress evolution in thermal barrier coating systems
… of CMSX-4, MCrAlY (Bond Coat) and APS-TBC (partially stabilized zirconia), were implemented into an FE-model in order to simulate the stress development at the metal/ceramic interface. The FE model reproduced the specimen geometry used in corresponding experiments. It comprises a periodic …