Results 31 to 40 of about 11,021 (288)

Mechanical properties of materials used for temporary fixed dentures – in vitro study

open access: yesCurrent Issues in Pharmacy and Medical Sciences, 2017
Objectives. The objective of the research was to define the mechanical properties of currently marketed temporary filling materials. Methods. Eight temporary filling materials: Boston, Dentalon, Protemp II, Revotek LC, Structure 2, Structure 3, UniFast ...
Celej-Piszcz Elzbieta   +3 more
doaj   +1 more source

Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin

open access: yesMaterials Research, 2009
The aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin.
Chanya Chuenarrom   +2 more
doaj   +1 more source

Addition to the methodology of research into permanent teeth hardness [PDF]

open access: yesArchives of Biological Sciences, 2010
This paper examines permanent teeth hardness (microhardness) using the Vickers method. An original methodology was developed and adopted for preparing the experimental material, i.e.
Gnjato Sanja
doaj   +1 more source

Optimizing the Parameters of Spark Plasma Sintering to Enhance the Hardness of MgO/TiC Composites

open access: yesAdvances in Materials Science and Engineering, 2023
In this research, the first work was carried out to manufacture MgO-based metal matrix composite containing 3 wt%. Sintering parameters, such as temperature, pressure, and time were subjected to Taguchi analysis to identify the most significant effect on
Sai Ashish Kumar Karanam   +8 more
doaj   +1 more source

Influence of Cooling Rate on Primary Silicon Size in Hypereutectic Al–Si Alloy Fabricated by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Al–Si alloys are particularly in demand for automotive and electronic applications, thanks to their excellent wear and thermal properties. Nevertheless, when processed by conventional methods with low cooling rates, the coarse primary Si phases are responsible for increasing brittleness and inducing crack propagation.
Layla Shams Tisha   +3 more
wiley   +1 more source

Influence of pre-deformation on the precipitation of Cu-rich clusters in RPV model steel

open access: yesMATEC Web of Conferences, 2018
The effect of pre-deformation on the precipitation process of Cu-rich clusters in reactor pressure vessels (RPV) model steel is studied. In this research, Fe-1.16wt%Cu binary alloy is selected as RPV model steel to simulate the precipitation process of ...
Tan Zhaozhao   +4 more
doaj   +1 more source

PENGARUH PENGGUNAAN PASIR BALIKPAPAN TERHADAP KEKERASAN DAN FLUIDITAS LOGAM CORAN PADUAN Al-Si

open access: yesOtopro, 2021
The use of sand as a mold in the casting process is very common. In this study, Balikpapan sand used as casting sand then analyzed its effect on hardness and fluidity of the Al-Si alloy.
Sabdha Purna Yudha
doaj   +1 more source

On the Measurement of Vickers Hardness with Light Loads

open access: yesTransactions of the Japan Society of Mechanical Engineers, 1953
In order to investigate the range, in which the law of similarity on Vickers hardness is held, the measurement of Vickers hardness of carbon steel and duralumin was taken place under the light loads of 50∼1000g, with attention to the errors due to the work-hardning of test surfaces and the inertia effect of moving parts of the machine.
Takeo Yoshizawa, Yoshiro Nakamura
openaire   +3 more sources

Development of a Novel Processing Route for Dispersoid/Precipitation‐Strengthened High Conductive Copper Alloys by Using Metalized Nanoceramics in Additive Manufacturing

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel   +7 more
wiley   +1 more source

Structural and Mechanical Properties of Nanocrystalline Fe60Al30Cu10 (at.%) Powders Prepared by Mechanical Alloying

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2019
In the present study, the nanostructured Fe(Al,Cu) solid solution was synthesized by mechanical alloying (MA) process of the elemental powders. The powder mixtures were milled in a planetary ball mill for various periods of time, up to 50 h.
Barış AVAR   +2 more
doaj   +1 more source

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