Results 11 to 20 of about 50,382 (328)

The Micro-hardness of Heat Treated Carbon Steel

open access: yesMedžiagotyra, 2014
The aim of the submitted work is to study the influence of applied loads ranging from 0.09807 N to 0.9807 N on measured values of micro-hardness of heat treated carbon steel. The influence of applied load on measured value of micro-hardness was evaluated
Jozef PETRÍK
doaj   +2 more sources

Determination of root dentin and cementum micro hardness

open access: yesBrazilian Journal of Oral Sciences, 2015
Vickers micro hardness was assessed on root dentin and cementum in 30 canines obtained from the Periodontics Discipline tooth bank. Crown and cervical portion of the root were discarded by a transverse section situated 3mm, apically, from the cemento ...
Fabiano Ribeiro Cirano   +2 more
doaj   +2 more sources

Micro-Hardness of PBT Influenced by Beta Radiation [PDF]

open access: yesMATEC Web of Conferences, 2016
Cross-linking is a process in which polymer chains are associated through chemical bonds. Radiation, which penetrated through specimens and reacted with the cross-linking agent, gradually formed cross-linking (3D net), first in the surface layer and then
Ovsik Martin   +4 more
doaj   +3 more sources

The effect of multiple enamel conditioning on enamel micro-hardness. [PDF]

open access: yesDent Res J (Isfahan), 2022
White spot formation is one of the common side effects in orthodontic treatments and multiple enamel conditioning might happen even during on session of fixed orthodontic treatments. The aim of the present study was to evaluate the impact of multiple enamel conditioning with different methods on enamel micro-hardness (MH).In this In vitro experimental ...
Salehi P, Shavakhi M, Nazari S, Ajami S.
europepmc   +4 more sources

Evaluation of Flexural Strength and Vickers Micro Hardness of Three Different Denture Base Resin Materials.

open access: goldJ Pharm Bioallied Sci
Mathar MI   +5 more
europepmc   +2 more sources

The Process Parameters of Micro Particle Bombarding (MPB) for Surface Integrity Enhancement of Cermet Material and Tool Steel

open access: yesMicromachines, 2023
In order to increase the performance of tool or mold/die, there are a lot of micro features on the surface to provide special functions, such as anti-adhesion or lubrication.
Fu-Chuan Hsu   +7 more
doaj   +1 more source

In vitro action of various carbamide peroxide gel bleaching agents on the micro hardness of human enamel

open access: yesContemporary Clinical Dentistry, 2012
Aims and Objectives: The study was undertaken to evaluate the effects of different carbamide peroxide based gels on micro hardness of enamel exposed to these agents for a period of 8 h daily for a total of 1 week.
CH R Sunil   +3 more
doaj   +1 more source

Effect of resin thickness, and curing time on the micro-hardness of bulk-fill resin composites [PDF]

open access: yes, 2015
Background: Bulk-fill resin composite has been introduced, their manufacturers claimed that they can be applied in bulks of 4mm, without necessitating a prolonged curing time, or a light curing unit with increased irradiance.
Moharam, Lamiaa M.   +2 more
core   +3 more sources

Micro-hardness behavior of fiber reinforced thermosetting composites embedded with cellulose nanocrystals

open access: yesAlexandria Engineering Journal, 2018
The influences of Nano particles incorporation, fiber type and matrix types on the mechanical properties of fiber-reinforced composites have been widely investigated by researchers.
Yasser S. Mohamed   +2 more
doaj   +1 more source

Formation mechanism and microstructure evolution of light etched region during rolling contact fatigue in M50 steel

open access: yesJournal of Materials Research and Technology, 2023
The microstructure evolution and formation mechanism of lighting etched region (LER) during rolling contact fatigue (RCF) in M50 steel are systematically investigated.
Xingyu Lu   +4 more
doaj   +1 more source

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