Results 21 to 30 of about 143,288 (296)

Comparison of microhardness of three interim restorative materials: PEEK, PMMA and indirect composite

open access: yesJournal of Dental School, 2021
Objectives Interim restorations play a critical role in success of restorative treatments. However, they need to preserve their integrity in the oral environment.
Parinaz Ansari   +2 more
doaj   +1 more source

Influence of SAW Welding Parameters on Microhardness of Steel A516-Gr60 [PDF]

open access: yesEngineering and Technology Journal, 2018
Submerged Arc Welding (SAW) process is generally used for industries, such as petroleum storage tanks, pressure vessels, and structural components.Good mechanical properties of welded joint lead to crack-free strong joints.
Sadeq Bakhy, Samir Amin, Fouad Abdullah
doaj   +1 more source

Discrete characteristic and edge effect during subsurface microhardness measurement of Ti-6Al-4V alloy

open access: yesMaterials Research Express, 2022
This paper investigates the discrete characteristic and edge effect of subsurface microhardness of Ti-6Al-4V alloy. The results show that the discrete degree of Ti-6Al-4V alloy microhardness decreases with increasing loading force. When the loading force
Ning Hou   +4 more
doaj   +1 more source

Color stability, Roughness, and Microhardness of Enamel and Composites Submitted to Staining/Bleaching Cycles

open access: yesSaudi Dental Journal, 2020
Objective To compare the effect of two bleaching systems (bleaching gel and whitening strips) on the color change, roughness, and microhardness of enamel and two resin composites. Material and methods Two cavities were prepared on bovine enamel specimens
Sarah S. Al-Angari, G. Eckert, A. Sabrah
semanticscholar   +1 more source

Dimensional effects on magnetic properties of Fe-Si steels due to laser and mechanical cutting [PDF]

open access: yes, 2010
Microstructural deterioration near the cut line and presence of residual stresses both affect the magnetic properties of cut parts. In this paper, the differences between microstructural deterioration resulting from mechanical and laser cutting as well ...
Gomes de Araujo, Edgar   +4 more
core   +2 more sources

Microhardness of bulk-fill composite materials

open access: yesActa Clinica Croatica, 2016
The aim of the study was to determine microhardness of high- and low-viscosity bulk-fill composite resins and compare it with conventional composite materials. Four materials of high-viscosity were tested, including three bulk-fills: QuiXfi l (QF), x-tra
Katarina Kelić   +4 more
doaj   +1 more source

Characterization of bulk MgB2 synthesized by infiltration and growth [PDF]

open access: yes, 2015
Superconducting MgB2 has been synthesized successfully by a modified infiltration and growth (IG) technique. The ambient pressure technique is relatively simple and scalable to complex shaped bulks.
Bhagurkar, AG   +4 more
core   +1 more source

On the Machinability of an Al-63%SiC Metal Matrix Composite [PDF]

open access: yes, 2020
This paper presents a preliminary study of aluminium matrix composite materials during machining, with a special focus on their behavior under conventional processes.
Batista Ponce, Moisés   +4 more
core   +1 more source

Evaluation of compressive strength, shear bond strength, and microhardness values of glass-ionomer cement Type IX and Cention N

open access: yesJournal of Conservative Dentistry, 2020
Aim: This study aimed to compare the compressive strength, shear bond strength, and microhardness of glass-ionomer cement (GIC) Type IX and Cention N.
Vishakha Verma   +3 more
semanticscholar   +1 more source

Polymerization shrinkage, microhardness and depth of cure of bulk fill resin composites.

open access: yesDental materials journal, 2019
The present in vitro study assessed the polymerization shrinkage/PS, Knoop microhardness/KHN and depth of cure/DC of 9 different resin composites : Filtek Bulk Fill Flowable (FBF), Surefill SDR flow (SDR), Xtra Base (XB), Filtek Z350XT Flowable (Z3F ...
F. Rizzante   +5 more
semanticscholar   +1 more source

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