Results 21 to 30 of about 140,919 (361)

The Influence of Particle Size and Reinforcement Rate of B4C on Mechanical and Microstructure Properties of Al-B4C Composites

open access: yesDüzce 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
doaj   +1 more source

Indentation Modulus, Indentation Work and Creep of Metals and Alloys at the Macro-Scale Level: Experimental Insights into the Use of a Primary Vickers Hardness Standard Machine

open access: yesMaterials, 2021
In this work, the experimental method and the calculation model for the determination of indentation moduli, indentation work, and indentation creep of metallic materials, by means of macroscale-level forces provided by a primary hardness standard ...
A. Schiavi   +4 more
semanticscholar   +1 more source

Study on the mechanical properties gradient in surface oxygen diffusion hardened layer of Ti6Al4V alloy

open access: yesJournal of Materials Research and Technology, 2022
This paper studies the mechanical properties gradient in surface oxygen diffusion hardened (SODH) layer of Ti6Al4V alloy by four-point bending test, nano-indentation test and Vickers hardness measurement test. The relationships of hardness-oxygen content
Hao Fei   +6 more
doaj   +1 more source

Obtaining molybdenum-copper plates by spark pmasma sintering [PDF]

open access: yes, 2008
In the article, there has been molybdenum-copper bulk samples sintering, obtained the spark plasma sintering technology. XRD-diffraction, scanning electron microscopy and Vickers hardness test were carried out in this work.
Половинкина, Ю. Н.   +1 more
core   +2 more sources

The effect of different insertion techniques on the depth of cure and vickers surface micro-hardness of two bulk-fill resin composite materials [PDF]

open access: yes, 2017
The aim of this study was to evaluate the Vickers surface micro-hardness and the depth of cure of two bulk-fill resin composites and one incremental-fill resin composite.
Abou Elenein, Karim   +2 more
core   +2 more sources

Vickers Hardness and Shrinkage Stress Evaluation of Low and High Viscosity Bulk-Fill Resin Composite

open access: yesPolymers, 2020
The aim of this in vitro study was to evaluate the hardness and shrinkage stress (SS) of six bulk-fill resin composites. To evaluate microhardness (MH), ten 6 mm specimens were prepared using a metal mold for each selected bulk-fill resin composite and ...
A. Comba   +6 more
semanticscholar   +1 more source

Fabrication method, microstructural characteristics, and hardness behavior of an interpenetrating phases hybrid aluminum/alumina-nanodiamond composite [PDF]

open access: yesJournal of Particle Science and Technology, 2023
In the present work, the addition effects of nanodiamond (ND) on the microstructure and hardness behavior of interpenetrating phases hybrid Al/Al2O3 metal matrix composites were investigated.
Hassan Zeinali Moghaddam   +2 more
doaj   +1 more source

Influence of different polishing materials in the material removal of steel samples [PDF]

open access: yes, 2018
The quality of injection moulded polymer optic parts depends on the surface finish of the respective mould. In order to improve and control the surface finish of the mould it is important to be able to keep the material removal constant during the ...
Almeida, Rui   +3 more
core   +2 more sources

Comparative evaluation of the surface hardness of different esthetic restorative materials: An in vitro study

open access: yesJournal of Pharmacy and Bioallied Sciences, 2020
Aim: The aim of this study was to evaluate the surface hardness of a newly developed fiber-reinforced composite and bulkfill composites. Materials and Methods: Fiber-reinforced composite and other commercially available bulkfill composites were used ...
Anoop Samuel   +5 more
doaj   +1 more source

Developing definitions of conventional hardness tests for use by National Metrology Institutes

open access: yesMeasurement: Sensors, 2021
This paper describes the process used by the Consultative Committee for Mass and Related Quantities - Working Group on Hardness (CCM-WGH) of the International Committee of Weights and Measures (CIPM) to develop international definitions of the ...
S. Low   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy