Comparative analyses of the IV group oxides additives influence on the sintering kinetics of zirconia nanopowders.

Ceramics materials based on yttria stabilised tetragonal zirconia nanopowders (3Y-TZP) are widely used in the production fuel cells, oxygen sensors, refractories, etc. and intensively studied due to their outstanding mechanical and electrical properties. To obtain ceramics with specific properties different additives can be used.

Morphological and crystal chemical characteristic of panсreatic lithiasis.

Objective: Introduction: Information on chemical and phase composition of pancreoliths is limited and discrepant. There are reports, that pancreoliths are composed by calcium, phosphate, calcium carbonate or combination of calcium with fatty acids The aim of the work is studying of structural characteristics of pancreatoliths in 5 clinical cases.

Patients And Methods: Materials and methods: Morphological and crystal-chemical study of five cases of pathological biomineralization in the pancreas were conducted in the work.

The Effect of a Small Amount SiO on Sintering Kinetics of Tetragonal Zirconia Nanopowders.

In the present paper the sintering behavior of 3 mol% yttria-stabilized zirconia (3Y-TZP) with and without small amount (0.2 wt %) of SiO additive was investigated. It has been studied the silica impact which was added in two ways (co-precipitation and mechanical mixing) on sintering kinetics of 3Y-TZP nanopowders at the initial sintering stage.

The Peculiarities of Structure Formation and Properties of Zirconia-Based Nanocomposites with Addition of AlO and NiO.

The present study is devoted to the problem of enhancing fracture toughness of ZrO ceramic materials through the formation of composite structure by addition of AlO and NiO particles. In this paper, we analyzed the general and distinguished features of microstructure of both composite materials and its effect on fracture toughness of materials. In this paper, we used the XRD, SEM, and EDS methods for determination of granulometric, phase, and chemical composition of sintered materials.

Ag(AgO)-ZrO-YO photosensitive composites: influence of synthesized routes on structure and properties.

It was shown that Ag(or AgO)-ZrO-YO formation occurs due to the complex process of decomposition and structure transformation of oxide materials and Ag-complexes. Differences in the decomposition temperatures of Ag-complexes, in particular, and their melting temperatures, and the transformation of ZrO-YO NPs morphology leads to the creation of composite structure of two types: an Ag-NPs/zirconia matrix and zirconia core/Ag-shell. It was shown that for these composites the temperature is an effective approach for controlling the NPs sizes for both components (Ag clusters and zirconia NPs), the defectiveness of the complex oxide and their optical properties, in particular the photosensitive to visible irradiation range.