A mathematical approach is presented for the calculation of the major and trace element fractionation that is caused by growth of zoned garnet in metamorphic rocks. This approach is based on textural and compositional parameters directly obtained from natural examples. It takes into account the mode and composition of all unzoned minerals, as well as the mode, crystal size distribution and zona...

Conventional and new sintering mechanisms have been porous compacts is well-known in the ceramic literature. However, several reports have been presented recently that investigated using fine powders of CeO2 and Y2O3 of excellent sinterability. We have verified the validity of Herring’s show that particle/grain size can remain essentially constant up to a density of 92%, and such a resistance t...

The fluorination of Yttria (Y2O3) coatings in the inner chamber wall a plasma-etching equipment causes process drift. In this paper, we investigate relationship between microstructure and fluoride layer Y2O3 prepared by aerosol deposition (AD) method compared with atmospheric plasma spraying (APS) ion plating (IP). corrosion AD-coating, which has highly dense without any pores, proceeded homoge...

Pr3+-doped yttria (Y2O3) nanocrystal layers embedded in between pure thin films were prepared on four different substrates. Pulsed laser deposition was used to fabricate this sandwich-like structure. An exhaustive structural and optical characterization of the initial nanocrystals performed study their preservation once incorporated deposited films. We demonstrate that Y2O3:Pr3+ can be integrat...

Al2O3-Y2O3 laminated coating can be applied in fusion reactors to prevent fuel leakage and radiological hazard. However, the residual stress induced by thermal cycles during operation of reactor cause failure coating. In order analyze problem, finite element models coatings with 600 nm total thickness different layout were analyzed. The max principal site is located at sub-top layer. Y2O3 decre...

The aim of this study was to deposit multi-functional ZrO28%Y2O3 coating layers using the plasma spray technology and then characterise such layers. In combination with other biomedical ceramics, is intended for application in implant surface modification. examination focused on mechanical properties microstructure . Using atmospheric spraying, duplex ZrO28%Y2O3/Ni22Cr10Al1Y system deposited X1...