Search
Now showing items 31-40 of 149
Estudo de fibras de folhas de abacaxis (gênero Ananas) e sua utilização em compósitos biodegradáveis com matriz de poli(ácido lático) (PLA)
(Universidade Federal de São Carlos, 2014-08-19)
In this work natural fibers from new pineapple varieties were studied aiming at their application as mechanical reinforcement for green polymer composites. Eighteen varieties of pineapple leave fibers (PALFs) were then ...
Aplicação e avaliação de critérios semi-empíricos para o desenvolvimento de novas ligas vítreas do sistema Ti-Cu-Ni
(Universidade Federal de São Carlos, 2013-06-26)
The selection of good glass forming compositions is not a simple undertaking and many groups work on models and theoretical approximations in order to predict or at least guide the laborious and expensive experimental ...
Tratamentos de superfícies em Ti-CP, Ti-6Al-4V e Ti-6Al- 7Nb visando a osseointegração de implantes: propriedades das superfícies e respostas osteoblásticas
(Universidade Federal de São Carlos, 2013-07-10)
The aim of this study was to evaluate the properties of the surfaces of CP-Ti, Ti-6Al-4V, Ti-6Al-7Nb alloys modified via chemical treatments, as well as evaluating the behavior of human osteoblastic cells as function of ...
Influência da adição de Nb, Ti e Zr nas propriedades de fluência da liga HP fundida por centrifugação
(Universidade Federal de São Carlos, 2014-08-05)
This work aimed to evaluate the influence caused by Nb single addition and by Nb-Ti and Nb-Zr combined addition in the high temperature mechanical properties of a centrifugally cast HP alloy. Particular investigation was ...
Nucleação, crescimento de cristais, relaxação e escoamento viscoso em vidros de diopsídio e diborato de lítio
(Universidade Federal de São Carlos, 2014-04-23)
Heated glasses undergo a variety of kinetic processes, such as crystallization, relaxation and viscous flow, that are very important both scientifically and technologically. In this work, we measured and rigorously analyzed ...
Caracterização microestrutural e modelagem do amaciamento dinâmico a quente do aço inoxidável austenítico ASTM F 138, utilizado em implantes ortopédicos
(Universidade Federal de São Carlos, 2014-07-10)
Flow stress curves of ASTM F 138 austenitic stainless steel were obtained through isothermal hot torsion testing in the temperature range of 900- 1200oC and in the strain rate range of 0,01-10s-1, totaling 24 experiments. ...
Ligas metálicas amorfas: um novo método de predição de composição com capacidade de formação de amorfos
(Universidade Federal de São Carlos, 2014-02-21)
This thesis presents the development of a new criterion which can indicate new compositions for amorphous metallic alloys. This new criterion was based on dense packing of spheres combined with the lambda criterion through ...
Caracterização da liga amorfa Cu36Ti34Zr22Ni8 processada termomecanicamente
(Universidade Federal de São Carlos, 2015-03-31)
Glass forming ability (GFA) is one of the big issues to obtain large bulk metallic glasses, which are composed of three or more elements. Regardless of an increasing theoretical understanding of glass formation, taking a ...
Efeito químico de aditivos em suspensões aquosas de magnésia para potenciais aplicações em concretos refratários
(Universidade Federal de São Carlos, 2015-02-05)
Magnesium oxide is an important subject of investigation because of its physical and chemical properties, mainly for its application to refractory ceramics. However, magnesium oxide hydration generates its hydroxide, ...
Elaboração de indicadores de ciência e tecnologia para o monitoramento de avanços tecnológicos em nanocelulose
(Universidade Federal de São Carlos, 2015-02-27)
Nanocellulose is an economically promising nanomaterial that can be obtained from renewed sources. Due to its potential, it has been the subject of much research in Brazil and in the world. Nanocellulose is an emerging ...