Results 11 to 20 of about 77,448 (312)

Current Trends in Improving of Artificial Joints Design and Technologies for Their Arthroplasty [PDF]

open access: yes, 2020
There is a global tendency to rejuvenate joint diseases, and serious diseases such as arthrosis and arthritis develop in 90% of people over 55 years of age.
Pakhaliuk, Vladimir   +2 more
core   +1 more source

Advanced Boron Carbide Matrix Nanocomposites Obtained from Liquid-Charge: Focused Review

open access: yesCondensed Matter, 2023
Boron carbide is known as a hard material; it possesses a unique complex of physical-mechanical properties and has diverse applications in industries.
Levan Chkhartishvili   +12 more
doaj   +1 more source

Casting Technology Experiment and Computer Modeling of Ornaments from Bronze Age [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
The casting workshop was discovered with numerous artifacts, confirming the existence of the manufacturing process of metal ornaments using ceramic molds and investment casting technology in Lower Silesia (Poland) in 7-6 BC.
A. Garbacz-Klempka   +4 more
doaj   +1 more source

Effects of Brazing Technology on Hermeticity of Alumina Ceramic-Metal Joint Used in Nuclear Power Plants

open access: yesFrontiers in Materials, 2021
Taking the brazing mechanism of alumina ceramics and kovar alloys as the main research object, based on the molybdenum–manganese metallization method, the influence of the direct and indirect brazing processes on the morphology of the final connected ...
Nengmei Deng   +6 more
doaj   +1 more source

Comparative evaluation of effect of laser on shear bond strength of ceramic bonded with two base metal alloys: An in-vitro study

open access: yesIndian Journal of Dental Research, 2013
The most common clinical failure in metal ceramic restoration is at the ceramo-metal interface. For the clinical longevity, metal-ceramic prostheses must have satisfactory bond strength between metal and ceramic. Aim and Objective: The aim of this study
K Deepak   +3 more
doaj   +1 more source

Environmental protection of titanium alloys in centrifugal compressors at 500°C in saline atmosphere [PDF]

open access: yes, 2004
The use of the titanium alloy Ti-6246 (Ti–6Al–2Sn–4Zr–6Mo, wt-%) for gas turbine compressors allows an increase in working temperature and stress level.
BEGUIN J. D.   +10 more
core   +3 more sources

The effect of thermal and mechanical cycling on bond strength of a ceramic to nickel-chromium (Ni-Cr) and cobalt-chromium (Co-Cr) alloys

open access: yesIndian Journal of Dental Research, 2012
Purpose: This study evaluates the effect of thermo-mechanical cycling (TMC) on the bond strength of a ceramic to three cobalt-chromium (Co-Cr) and two nickel-chromium (Ni-Cr) alloys.
M Vojdani   +3 more
doaj   +1 more source

Mechanisms of High Temperature Degradation of Thermal Barrier Coatings. [PDF]

open access: yes, 2009
Thermal barrier coatings (TBCs) are crucial for increasing the turbine inlet temperature (and hence efficiency) of gas turbine engines. The thesis describes PhD research aimed at improving understanding of the thermal cycling failure mechanisms of ...
Wu, Rudder T.C., Wu, Rudder T.C.
core   +1 more source

Discrepancy in alloy composition of imported and non-imported porcelain-fused-to-metal (PFM) crowns produced by Norwegian dental laboratories

open access: yesBiomaterial Investigations in Dentistry, 2020
Purpose Even though the use of full ceramic crowns have become a well-established practice in dental clinics compare to the last decade, the use of imported casted porcelain-fused-to-metal (PFMs) crowns is still prevalent.
Håvard Jostein Haugen   +4 more
doaj   +1 more source

An In Vitro Study on the Shear Bond Strength of Feldspathic Porcelain to Nickel Chromium Alloy and Cobalt Chromium Alloy after Various Surface Treatments

open access: yesInternational Journal of Dentistry, 2022
Background. To evaluate and compare the shear bond strength of feldspathic porcelain to four distinctively surface-treated Ni-Cr and Co-Cr alloys and to assess the impact of oxidation-heat treatment on porcelain to base metal alloy bond strength. Methods.
Vignesh Kamath   +11 more
doaj   +1 more source

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