We report on thermally resilient planar waveguides fabricated nc-YSZ by direct fs-laser inscription in transparent nc-yttria stabilized zirconia (nc-YSZ) polycrystalline ceramic. The consisted of rectangular sections (4.5 × 2 mm ) the surface sample. Optical characterization at 633 and 810 nm was performed. estimate a laser-induced refractive index contrast 10 –4 . Post-waveguide-fabrication th...

Acceleration of bone healing has always been a major challenge in orthopedic surgery, the aim of this study was an evaluation of the biological effects of zirconia-stabilized yttria on bone healing, using an in vivo model. Nano-hydroxyapatite powder with zirconia-stabilized yttria were inserted in rabbit tibia and then histologically analyzed and compared with non-treated controls so thirty six...

Time-domain spectroscopy (TDS) in the terahertz (THz) frequency range is gaining importance nondestructive testing of dielectric materials. One application layer thickness measurement a coating layer. To determine from data, refractive index must be known surveyed range. For perpendicular incidence radiation, methods exist to extract data themselves without prior knowledge. This paper extends t...

This study investigated the feasibility of depositing graphene nanoplatelet (GNP)-reinforced yttria-stabilized zirconia (YSZ) composite coatings. The coatings were deposited from an ethanol-based mixed YSZ and GNP suspension using plasma spraying (SPS). Raman spectroscopy confirmed presence GNPs in matrix, scanning electron microscopy (SEM) analysis revealed a desired columnar microstructure wi...

Yttria stabilized zirconia (YSZ) has been widely used as electrolyte in solid oxide fuel cell (SOFC). The effect of fabrication process on the properties of YSZ electrolyte thick film is discussed in the paper. With YSZ nano-powders of about 20-60nm as raw material, YSZ green adobe was fabricated by tape calendering process. Three-step sintering process was performed firstly holding at 1000°C f...

Owing to its high penetrability with dielectric materials, terahertz time domain spectroscopy (THz-TDS) is a promising nondestructive measurement technology. The coating thickness deviation and defect of thermal barrier coatings (TBC) will affect insulation performance lifetime. In this work, THz-TDS was applied measure the distribution TBC. refractive index obtained by transmission mode. To av...

Novel strategies based on spray-pyrolysis deposition are proposed to increase the triple-phase boundary (TPB) of La0.8Sr0.2MnO3-δ (LSM) cathodes in contact with yttria-stabilized zirconia (YSZ) electrolyte: (i) nanocrystalline LSM films deposited on as-prepared YSZ surface; (ii) the addition of poly(methyl methacrylate) microspheres as pore formers to further increase the porosity of the film c...

This paper presents low cycle fatigue (LCF) life prediction of a coated and uncoated exhaust manifolds. First Solidworks software was used to model the exhaust manifolds. A thermal barrier coating system was applied on the tubes c of the exhaust manifolds, consists of two-layer systems: a ceramic top coat (TC), made of yttria stabilized zirconia (YSZ), ZrO2-8%Y2O3 and also a metallic bond coat ...

This paper presents the application of the Taguchi experimental design in developing nanostructured yittria stabilized zirconia (YSZ) coatings by plasma spraying process. This paper depicts dependence of adhesion strength of as-sprayed nanostructured YSZ coatings on various process parameters, and effect of those process parameters on performance output has been studied using Taguchi's L16 orth...

Abstract For more than 6 decades, thermal barrier coatings have been used to protect structural parts in both stationary and aviation gas turbines. These allow the use of significant higher operation temperatures hence increased efficiencies. In 1970s, yttria-stabilized zirconia (YSZ) was identified as outstanding material for this application. As major deposition technologies electron beam phy...