Results 41 to 50 of about 398,241 (340)

Hardness measurements for high-pressure prepared TaB and nano-TaC ceramics

open access: yesResults in Physics, 2017
The Vickers hardness of the bulk TaB and nano-TaC ceramics sintered at high pressure and high temperature were measured by using a diamond indentation method.
Haihua Chen   +5 more
doaj   +1 more source

Relation between mechanical and textural properties of dense materials of tetragonal and cubic zirconia [PDF]

open access: yesScience 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
doaj   +1 more source

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

Analisis Simulasi Hubungan Suhu Sintering Dengan Nilai Kekerasan Dan Kekuatan Patah Keramik Alumina

open access: yesJurnal 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
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

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

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

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

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

open access: yesAdvanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji   +5 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

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