Finite element modeling of superplastic co-doped yttria-stabilized tetragonal-zirconia polycrystals

Cyclic fatigue resistance of yttria-stabilized tetragonal zirconia polycrystals with hot isostatic press processing.

This study investigated the influence of surface roughness and cyclic loading on fatigue resistance in Y-TZP subjected to hot isostatic pressing (HIP). Fifty Y-TZP cylinders 3.0 mm in diameter were divided into Group A (polished by centerless method; TZP-CP) or Group B (blasted and acid-etched: TZP-SB150E). Twenty five cp-titanium cylinders (Ti-SB150E) were used as a control. Static and cyclic ...

Yttria-Ceria Stabilized Polycrystals: Sintering, Boundary Segregation Tetragonal Zirconia Grain Growth and Grain

,]u amlll'slS tS prt 'seulud o / gralu ,t~lO111/i tllld th'll,~l~COtl/m o/ r t t r la-cr l lo ,~_taluh:t'd tetlagOlla/ .llT'Ollltl Imlrcrrstal,~ ' ( ] ' , ( ' e ' I 'ZPs) u,~'lllg both i,~'/~thrrllla[ alld IlOll-I,~'otllerllla/ Icl']llllqllr,~ T/lu ch/Ir tl¢'lt'rlSlll'S O/ )', Ct' 'I~ZP.~ ' or'(' i'olup, lred 11/ thosr o/ )'. F Z f ' uud C~'. T'Z[' aud the 1'/-/('('t o/lul'r/'a,~lu,t~ i'~'l'lU ...

Abrasivity of Yttria Tetragonal Zirconia Polycrystals Abrasivity of Yttria Tetragonal Zirconia Polycrystal (Y-TZP) to dental enamel in comparison to Noble White High Palladium alloy

Objectives: To test the wear of enamel against Yttria Tetragonal Zirconia Polycrystals (Y-TZP) in comparison to the wear of enamel against a noble white high Palladium alloy. Methods: A total of 20 specimens were used, 10 of Y-TZP and 10 of High Palladium alloy, both were subjected to 202,800 contacts against an enamel rod 2x2 mm in cross section under a mean load of 475.04g leading to a mean f...

Effects of the addition of minute amounts of alumina on the microstructure and sintering behavior of yttria stabilized tetragonal zirconia polycrystals ceramic via a co - precipitation process

Improved bounds on the conductivity

Diierent bounds on the conductivity of a composite material may improve on each other in diierent conductivity regimes. If so, the question arises of how to eeciently interpolate between the bounds. In this paper we show how to do an interpolation with a two-point Pad e approximation method. For bounds on two-component composites the interpolation method is shown to be, in a sense, the best pos...