Navegar por los elementos (27 total)

Semicrystalline microspheres are generally easily obtained from petrurgical processes, ie crystallization from a melted composition when cooling velocity and oxide compositions are unable to yield total vitrification. However,
when glass ceramics…

Laser was used as a rapid heating and vitrifying way to yield high Fe bearing glasses for biomedical applications. The high amount of Fe2O3 (40-80%), which is an intermediary (instead of a glass forming) oxide, implies a
difficult formation of…

La industria manufacturera de materiales refractarios en Venezuela tiene más de 50 años. Entre las décadas del 60 y del 90, se generaron varias industrias fabricantes de especialidades refractarias y de materias primas electrofundidas para el…

Los investigadores venezolanos enfrentan condiciones extremadamente desafiantes debido a la carencia cada vez más grave de apoyo financiero y técnico, a la creciente presión política sobre sus universidades y a una decadencia institucional a…

ABSTRACT :
A simple thickness measurement method is proposed for non consolidated, friable thick coatings
(1-100 μm), marking a furrow in the coating and observing with an optical microscope. Its low field depth
is used in association with the…

Zirconia is evermore in demand as a thermal barrier coatings (TBC) for energy economy and metal protection. Several methods are in use to produce the coatings, including sol-gel, CVD and PVD, however plasma ablation, has not been notoriously…