Nanometric Porosity
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Electrophoretic deposition of Ba(Ti0.85Zr0.15)O3 nanoparticles to fabrication of laser sintered ferroelectrics thick films / Deposição de nanopartículas de Ba(Ti0.85Zr0.15)O3 pela técnica de eletroforese para fabricação de filmes espessos ferroelétricos sinterizados a laser
The goals of this work were the implantation and optimization of the technique of sintering by laser scan of thick films, the kinetic study of the process and the evaluation of the physical properties of the laser sintered compound BaTi0.85Zr0.15O3 (BTZ), compared to thick films sintered in conventional furnace. Nanocrystalline powders of BTZ were for the fi
Publicado em: 2008
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2. Síntese, sinterização e caracterização de ferritas à base de Ni-Zn
Were synthesized different ferrites NixZn1-xFe2O4 (0,4 ≤ x ≤ 0,6) compositions by using citrate precursor method. Initially, the precursors citrates of iron, nickel and zinc were mixed and homogenized. The stoichiometric compositions were calcined at 350C without atmosphere control and the calcined powders were pressed in pellets and toroids. The
Publicado em: 2008
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3. Anodização para obtenção de membranas cerâmicas / Hard anodizing to attachment of ceramic membranes
This a study on the achievement of alumina membranes by the method of anodizing. From this method got up a layer of aluminum oxide on the anodic metal, who presented the basic properties necessary for the application as a support for the production and acquisition of nanomaterials, such as porosity nano and resistance to high temperature, and other propertie
Publicado em: 2007
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4. Caracterização de filmes finos de coloração por interferência em aços inoxidáveis
In this work, various experimental techniques were employed to study colored interference films deposited on the surface of AISI 304 stainless steel by an electrochemical pulsed current process developed at Fundação Centro Tecnológico de Minas Gerais Cetec. The influence of the film thickness on the mechanical properties of the coating-substrate system, o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2004
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5. Morphology and stress study of nanostructured porous silicon as a substrate for PbTe thin films growth by electrochemical process
Porous silicon layers (PSL) were produced by stain etching from a HF:HNO3 500:1 mixture with etching time varying in the range of 1 up to 10 min. The samples have presented nanometric porosity as a function of etching time, characteristic of heavily doped p type silicon. The residual stress and the correlation length of the layers were obtained through the a
Materials Research. Publicado em: 2004-12