Micro structural control of stabilized Zirconia ceramics (8YSZ) through modified conventional sintering methodologies

WEAR REESISTANCE OF NANOSTRUCTURED AND CONVENTIONAL YTTRIA-STABILIZED ZIRCONIA COATINGS

Partially stabilized zirconia (PSZ) has been proven to be an excellent candidate as a thermal barrier coating (TBe) for hot sections in, for instance, heat or internal combustion engines and gas turbine parts. The main functions of these coatings are reducing heat losses, reducing fuel consumption, increasing efficiency, and extending durability and life. One of the main problems involved is we...

Aes/stem Grain Boundary Analysis of Stabilized Zirconia Ceramics

A~~act-Semi~uantitative Auger Electron Spectroscopy (AES) on pure monophasic (Z~*)~.~(YO,.~~,,, was used to determine the chemical composition of the grain boundaries. Grain boundary enrichment with Y was observed with an enrichment factor of about 1.5. The difference in activation energy of the ionic conductivity of the grain boundary compared with the bulk can be explained by the Y segregatio...

Radiation Tolerance of Nanocrystalline Ceramics: Insights from Yttria Stabilized Zirconia

Materials for applications in hostile environments, such as nuclear reactors or radioactive waste immobilization, require extremely high resistance to radiation damage, such as resistance to amorphization or volume swelling. Nanocrystalline materials have been reported to present exceptionally high radiation-tolerance to amorphization. In principle, grain boundaries that are prevalent in nanoma...

Preparation and Characterization of YTTRIA Stabilized Zirconia (8YSZ) Nanofiber for Medical Application

A simple and inexpensive electrospinning technique was used to synthesize 8 mol% yttria-stabilized zirconia (8YSZ) ceramic nanofibers having average diameter of ~200 nm after calcination. As-spun nanofibers after subjected to pre-selected time-temperature calcination profile retained excellent fiber morphology and were phase transformed, enhancing its further applicability in medical field. The...

Sintering of zirconia pdf