Solidification structure and segregation in iron-chromium-nickel alloys.

Segregation and Precipitation in iron-chromium alloys: thermal ageing and irradiation effects

We present a brief review of recent advances in the atomistic modeling of segregation and precipitation kinetics in iron-chromium alloys, during thermal ageing and under irradiation. The approach takes into account the real diffusion mechanisms: vacancy and, under irradiation, self-interstitial jumps. Migration barriers are computed with effective pair interactions fitted on ab initio calculati...

" Catalytic Reactions on Iron / Cobalt and Iron / Nickel Alloys

Experimental Study of Segregation in Plane Front Solidification and Its Relevance to Iron Meteorite Solidification

A directional solidification technique was developed and applied to the problem of fractional crystallization of an iron meteorite parent body. Samples of Fe-Ni alloys close to meteorite compositions and containing S, P, and C were made. The solidified structures contain secondary phases such as sulphides within the proeutectic single crystal austenite (taenite). As a result of these experiment...

Shear bond strength of dental porcelains to nickel-chromium alloys.

The continuous technological advance and increasing availability of new base metal alloys and ceramic systems in the market, coupled to the demands of daily clinical practice, have made the constant evaluation of the bond strength of metal/porcelain combinations necessary. This study evaluated the metal/porcelain shear bond strength of three ceramic systems (Duceram, Williams and Noritake) in c...

[Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys].

BACKGROUND/AIM Metal-ceramic bond strength and alloys' elastic modulus clearly determine the potential of alloy application, because the ceramic integrity during mastication depends on these two characteristics. The aim of this study was to evaluate metal-ceramic bond strenght and elastic modulus of cobalt-chromium alloys in making porcelain-fused-to-metal restorations, regarding the applicatio...