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Now showing items 21-30 of 444
Caracterização microestrutural e propriedades de desgaste de revestimento de aço inoxidável supermartensítico modificado com boro processado por HVOF
(Universidade Federal de São Carlos, 2019-05-28)
Stainless steels are recognized as good materials to be used in corrosive environments, but their wear resistance does not exhibit good results. Therefore, researches have been developed to increase the wear resistance of ...
Produção e caracterização de recobrimentos de aço, empregando a liga amorfizável Fe-Cr-Nb-B
(Universidade Federal de São Carlos, 2012-02-13)
The equipments used to oil flow are submitted in an aggressive environment with the presence of hydrogen sulphide, carbon dioxide and sand, which contribute to corrosion and wear of the surface. To resist of these requests ...
Estudo da influência da adição de compostos de boro na resistência à oxidação de refratários a base de carbeto de silício-liga de nitreto.
(Universidade Federal de São Carlos, 2004-08-06)
In this work, boron was added in a commercial silicon carbide bonded silicon nitride refractory and its influence has been evaluated. These materials have been used as high temperature structural ceramic due to their ...
Produção e caracterização de ligas do sistema Al-Co-Fe- Cr e aplicações como recobrimentos para barreiras térmicas
(Universidade Federal de São Carlos, 2015-07-23)
Since the discovery of the quasicrystalline alloys by D. Schechtamn in 1984,
many research has been done in terms of coating application of these materials
and their intermetallic approximants due to their physical and ...
Desenvolvimento de metodologia para identificação de oportunidades de inovação tecnológica em tratamento de superfícies de jóias folheadas
(Universidade Federal de São Carlos, 2006-08-07)
Technological innovation has been greatly discussed worldwide for its central
role in economy. One important factor to innovation is the identification of
technological opportunities. Information on customer requirements ...
Processamento sol-gel de pós bioativos vítreos e cristalinos
(Universidade Federal de São Carlos, 2010-03-19)
In recent years, the sol-gel process has been increasingly used in the preparation of glasses and glass-ceramics with biomedical applications. Although the precursors used in this synthesis methodology are a very important ...
Estudo das propriedades de transporte de água e íons em tintas de acabamento à base de poliuretana alifática e poliuretana acrílica, novas e após envelhecimento sob radiação UV.
(Universidade Federal de São Carlos, 2005-08-26)
The present work has as objective the comparative study between anticorrosive painting systems with two types of vehicle - aliphatic polyurethane and acrylic polyurethane - loaded with different concentrations of iron oxide ...
Resistência de linha de solda em moldados por injeção de compósitos de polipropileno com talcos e fibra de vidro.
(Universidade Federal de São Carlos, 2003-07-03)
The presence of weld lines in injection moulded reinforced thermoplastics
contributes towards substantial reduction in mechanical properties, due to
unfavourable orientation of the reinforcement in the weak plane of the ...
Análise da superfície de porcelanatos polidos por meio de microscopia de força atômica
(Universidade Federal de São Carlos, 2010-05-24)
The porcelain stoneware tile is a ceramic product that has presented a great increase on production, since it had excellent technical properties and raised aesthetic performance. To improve its aesthetic characteristics, ...
Desenvolvimento de nanoblendas poliméricas PMMA/SAN
(Universidade Federal de São Carlos, 2012-08-03)
The motivation for this work was the idea that nanoblends are fundamentally dependent on the high interaction between the phases in the mixture. The strategy adopted in this study was based on the use of two polymers that ...