Results 21 to 30 of about 55,060 (259)

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

Realization of High Efficiency and Low Damage Machining of Anisotropic KDP Crystal by Grinding [PDF]

open access: yes, 2019
Potassium dihydrogen phosphate (KDP) is a non-linear material used in various opto-electronic applications including Q-switches, high-speed photography shutters, frequency harmonic generation lens and Pockels cells in the Inertial Confinement Fusion (ICF)
Cai, Rui   +4 more
core   +1 more source

Investigating the correlation between Nanoindentation and Vickers hardness of Ti6Al4V, pure copper and AISI316 stainless steel

open access: yesWasit Journal of Engineering Sciences
Nano-indentation test is the most popular hardness testing method because it can correlate to other materials' mechanical properties and is used in a narrow area or for materials with plastic deformation resistance that Vickers hardness cannot represent.
Ammar Dawood Ghali Al-Rubaye   +2 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

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

Chemical analysis and Vickers hardness of orthodontic mini-implants

open access: yesBrazilian Journal of Oral Sciences, 2015
Orthodontic mini-implants are used in clinical practice to provide efficient and aesthetically-pleasing anchorage. Aim: To evaluate the hardness (Vickers hardness) and chemical composition of miniimplant titanium alloys from five commercial brands ...
Christiane Cavalcante Feitoza   +5 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

Home - About - Disclaimer - Privacy