Results 21 to 30 of about 11,021 (288)
Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2020 In this study, Al-B4C composites were produced with various particle sizes (B4C: 3.5 and 20 µm) and reinforcement rates (B4C%: 1, 3, 6, 9, 12, 15, 30%) by the powder metallurgy method.
Mahmut Can Şenel, Mevlüt Gürbüz
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On the Application of Vickers Micro Hardness Testing to Isotactic Polypropylene
Polymers, 2022 Hardness is a useful measure of a material’s resistance to permanent indentation; but for viscoelastic polymers, hardness data are highly dependent on the test type and the parameter set chosen. Vickers microhardness testing is used to leave small indents (<150 µm) and is shown to be applicable to polymers.
Hao Wu +7 more
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Statistical analysis of the Vickers hardness
Materials Science and Engineering: A, 1999 The statistical dispersion in Vickers hardness measurements is discussed in order to check the reliability of hardness measurements. Several indentations were made under the same nominal conditions on a hardness standard. This was repeated for different loads.
Schneider, Jean-Marc +2 more
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Scientific Data, 2022 Measurement(s) elastic modulus • mechanical strength (yield) • deformation at rupture • Vickers hardness • oxygen content • grain size • mechanical strength (ultimate) Technology Type(s) longitudinal and transversal pulse-echo ultrasound, nanoidentation,
Camilo A. F. Salvador +4 more
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Effects of Sodium Hypochlorite Irrigation on Dentine Hardness
Journal of the Dow University of Health Sciences, 2010 Introduction: An endodontic treatment consists of removing all contents of the root canal system during the shaping phase.Irrigation is presently the best method for the removal of tissue remnants and dentine debris during instrumentation ...
Shahbaz Ahmed +2 more
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Carbon-Deficient Titanium Carbide With Highly Enhanced Hardness
Frontiers in Physics, 2020 We report the synthesis of a polycrystalline specimen of TiC1−x under high-pressure and high-temperature (HPHT) conditions. The carbon vacancy, crystal structure, Vicker hardness, elastic constants, and bond features of the synthesized specimen were ...
Hui Li +3 more
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Analysis of Vickers Hardness by the Finite Element Method
Journal of Applied Mechanics, 1991 A particular formulation of the three-dimensional finite element method specifically for analyzing the Vickers hardness test is established. The Vickers hardness of 0.46 percent carbon steel and 70/30 brass is calculated using the proposed method using the stress-strain curve obtained from a tensile test.
Yukitaka Murakami, Kenji Matsuda
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Analisis Simulasi Hubungan Suhu Sintering Dengan Nilai Kekerasan Dan Kekuatan Patah Keramik Alumina
Jurnal Eduscience, 2020 This research uses variable sintering temperature of 1300 0C, 1400 0C, 1500 0C and 1600 0C mixed with mullite additives 0%, 10%, 15%, 20% and 25%. As parameters of the study are the vickers hardness and bending strength.
Marnanda Seragih +2 more
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Relation between mechanical and textural properties of dense materials of tetragonal and cubic zirconia [PDF]
Science of Sintering, 2016 In the current paper we present a study of the sinterability of two zirconia (ZrO2) nanopowders with different content of yttrium oxide (Y2O3) 3 and 8 % tetragonal and cubic zirconia, respectively. After sintering between 900-1500ºC, the samples
Gómez Sofía +3 more
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Evaluation of Vickers Hardness by Nanoindentation Measurement.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1998 Size effect in microhardness measurement has been reported and discussed by many researchers. In spite of the efforts, decisive explanation for the size effect is not yet available. In this paper we discuss a new empirical hardness determination method for force-penetration depth curves. In order to avoid effects of grain boundaries, precipitations and
Kensuke Miyahara +3 more
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