Depth Sensing Indentation
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Microstructure and hardness of cement pastes with mineral admixture
ABSTRACT Portland cement pastes are highly heterogeneous material and exhibits heterogeneous features over a wide range of length scales. Mechanical properties of microstructure can be determined using depth-sensing indentation. Coupled indentation/SEM technique can be used to location the indents and provides a way to determine the mechanical properties of
Matéria (Rio J.). Publicado em: 22/06/2017
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2. Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests
In this study, damage mechanisms in the FeB/Fe2B coatings formed on the surface of AISI 304 steel are determined by adhesion tests. First, the boriding of the AISI 304 steel was carried out through the powder-pack method at 1223 K in the range from 2-10 h of exposure time. After treatment, Berkovich depth-sensing indentation test were conducted; the result s
Mat. Res.. Publicado em: 24/11/2015
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3. Estudo de propriedades de filmes de interferência crescidos em diferentes temperaturas sobre aços inoxidáveis / Estudo de propriedades de filmes de interferência crescidos em diferentes temperaturas sobre aços inoxidáveis
In this work, the properties of colored interference thin films grown by an electrochemical pulsed current process developed at Fundação Centro Tecnológico de Minas Gerais CETEC, using sulfochromic solution with a low chromium concentration at different temperatures were investigated. The physical, morphological and mechanical characteristics as well as w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/04/2009
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4. Characterization of interference thin films grown on stainless steel surface by alternate pulse current in a sulphochromic solution
The aim of this work was to characterize thin interference films grown on the surface of AISI 304 stainless steel for decorative purposes. Films were grown in a sulphochromic solution at room temperature by an alternating pulse current method. The morphology and chemical state of the elements in the films were investigated by field emission scanning electron
Materials Research. Publicado em: 2008-12
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5. Using the ratio: maximum load over unload stiffness squared, Pm/Su², on the evaluation of machine stiffness and area function of blunt indenters on depth-sensing indentation equipment
Depth sensing indentation study was conducted in a Fischerscope H100V machine, equipped with a Vickers indenter with a tip roundness of approximately 1330 nm. Tests were carried out on soda-lime glass, fused silica, sapphire, aluminum (1100 alloy), high alloyed steel, titanium and copper. The widely used iterative method of Oliver and Pharr was unsuccessful
Materials Research. Publicado em: 2007-12
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6. The use of a vickers indenter in depth sensing indentation for measuring elastic modulus and vickers hardness
Depth sensing indentation is a powerful experimental technique for determining mechanical properties of materials. In this work a computational routine was developed based on Oliver-Pharr method for measuring a more precise values of elastic modulus using a Fischerscope H100 depth sensing indentation apparatus, with a Vickers indenter. This computational rou
Materials Research. Publicado em: 2004-09
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7. Obtenção de revestimentos dúplex por nitretação a plasma e PVD-TiN em aços ferramenta AISI D2 e AISI H13. / Duplex coatings on AISI H13 and AISI D2 tool steels by using plasma nitriding and TiN-PVD.
In this work, the influence of both the microstructure and the load-bearing capacity of nitrided layers, formed on top of AISI D2 and AISI H13 tool steels, on adhesion and wear resistance of PVD-TiN coatings was studied. The threshold nitriding potential curves for the above mentioned steels and the optimum conditions of the pre-treatments which increased th
Publicado em: 2003