Results
repositories = "National Research Council Faenza - ISTEC Repository"
Colour development of red perovskite pigment Y(Al,Cr)O-3 in various ceramic applications
Description :
Ceramic pigments based on the perovskite structure develop a promising red hue and furthermore present no environmental or health problems. Pigment colouring efficiency was tested in different ceramic applications, both in the body and in glazes. Final products, with variations in both maximum firin...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Effect of waste glass (TV/PC cathodic tube and screen) on technological properties and sintering behaviour of porcelain stoneware tiles
Description :
In the present work, the effects of TV and PC cathodic tube and screen glasses additions (5 and 10 wt.%) to a porcelain stoneware body, in replacement of feldspar, were evaluated simulating the tilemaking process. The presence of glass allows to preserve good technological and mechanical properties,...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Zeolite-feldspar epiclastic rocks as flux in ceramic tile manufacturing
Author(s) :
De Gennaro R.
,
Dondi M.
,
Cappelletti P.
,
Cerri G.
,
De' Gennaro M.
,
Guarini G.
,
Langella A.
,
Parlato L.
,
Zanelli C.
Description :
Low-cost, naturally-occurring mixtures of feldspar and zeolite occurring in epiclastic rocks are promising substitutes for conventional quartz-feldspathic fluxes in ceramic bodies, since their fusibility and low hardness are expected to improve both grinding and sintering. Three epiclastic outcrops,...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Crystal structural and optical properties of Cr-doped Y2Ti2O7 and Y2Sn2O7 pyrochlores
Description :
Pyrochlore-type [A(2)(VIII)B(2)(VI)O(6)O] rare earth stannates (PS) and titanates (PT), doped with increasing amounts of Cr, develop colours 2 2 ranging from magenta to brown. Combined X-ray and neutron diffraction data revealed that Cr solubility in both pyrochlores is very limited, i.e. 0.07 atoms...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Pseudobrookite ceramic pigments: crystal structural, optical and technological properties
Description :
Pseudobrookite pigments were synthesised by the conventional ceramic route, calcining at 1300 °C four mixtures, with a Fe2O3:TiO2 ratio ranging from 47:53 to 40:60, and were characterised by XRPD, DRS and colouring performance in several ceramic matrices. Titania in moderate excess of the Fe2TiO5 st...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Crystal structure, optical properties and colouring performance of karrooite MgTi2O5 ceramic pigments
Description :
Karrooite, MgTi2O5, is a promising ceramic pigment due to its high refractoriness and refractive indices, as well as its ability to host transition metal ions in two crystallographically distinct octahedral sites. The colouring performance was investigated combining X-ray powder diffraction with UV-...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
High-performance yellow ceramic pigments Zr(Ti1-x-ySnx-yVyMy)O4 (M = Al, In, Y): crystal structure, colouring mechanism and technological properties
Description :
Zirconium titanate-stannate doped with V with co-dopants Al, In or Y was synthesised by solid state reaction and its structural (XRD, SEM), optical (DRS) and technological properties were determined to assess its potential use as ceramic pigment. These compounds have a srilankite-type, disordered or...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Equilibrium moisture content of clay bricks: The influence of the porous structure
Description :
The comprehension of the influence exerted by the material microstructure on the hygrometric properties of clay bricks plays a fundamental role in order to control the condensation phenomena and to avoid the deterioration of the masonry structure. The equilibrium moisture content (MEq) of ordinary a...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Ceramic application of mica titania pearlescent pigments
Description :
Mica based pearlescent pigments are widely applied in plastics, cosmetics, automobiles coatings among others, but they seem not explored by the ceramic industry. In this work, the potential of two commercial special effect pigments (with gold and silver lustre respectively) in the decoration of cera...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English
Effect of MoSi2 addition on densification and properties of ultra high temperature ceramics produced by pressureless sintering
Author(s) :
Silvestroni L.
Description :
Ultra high temperature ceramics are a class of material of great interest thanks to their combination of engineering properties such as high melting point, good thermochemical and thermomechanical properties in aggressive environment. Potential applications of these materials are forecast in aerospa...
Repository :
National Research Council Faenza - ISTEC Repository
Language(s) :
English