Results 41 to 50 of about 71,214 (262)

Salivary Chromium and Cobalt Concentrations in Patients with Dental Metallic Restorations—A Pilot Study

open access: yesDentistry Journal
Introduction: Metal ions, released from dental alloys due to corrosion, come in contact with the cells of the surrounding tissues and may spread throughout the body via the gastrointestinal system, thus inducing dose-dependent cytopathological effects ...
Zlatina Tomova   +3 more
doaj   +1 more source

Anticorrosion Nanocrystalline Beta Zeolite Thin Film for Advanced Applications

open access: yesJournal of Chemistry, 2015
Steel alloys corrosion is ubiquitous and is conventionally protected by anticorrosion chromate coatings. However, the process suffers from the release of carcinogenic hexavalent chromium ions that needs to be replaced by an ecofriendly alternative.
Maha Saud M. Al-subaie   +3 more
doaj   +1 more source

Noble metal catalyst detection in rocks using machine-learning: The future to low-cost, green energy materials?

open access: yesScientific Reports, 2023
Carbon capture and catalytic conversion to methane is promising for carbon–neutral energy production. Precious metals catalysts are highly efficient; yet they have several significant drawbacks including high cost, scarcity, environmental impact from the
Elena Ifandi   +6 more
doaj   +1 more source

High temperature nickel-base alloy Patent [PDF]

open access: yes, 1961
Preparation of nickel alloys for jet turbine blades operating at high ...
Freche, J. C.
core   +1 more source

Evaluation and comparison of shear bond strength of porcelain to a beryllium-free alloy of nickel-chromium, nickel and beryllium free alloy of cobalt-chromium, and titanium: An in vitro study

open access: yesThe Journal of Indian Prosthodontic Society, 2017
Aims: The aim of this study was to evaluate and compare the shear bond strength of porcelain to the alloys of nickel-chromium (Ni-Cr), cobalt-chromium (Co-Cr), and titanium.
Ananya Singh   +2 more
doaj   +1 more source

Duplex and superduplex stainless steels: microstructure and properties evolution by surface modification processes [PDF]

open access: yes, 2019
The paper presents an overview of diffusion surface treatments, especially nitriding processes, applied to duplex and superduplex stainless steels in the last five years. Research has been done mainly to investigate different nitriding processes in order
Biserova Tahchieva, Alisiya   +2 more
core  

Analyzing the Precipitation Effects in Low-Alloyed Copper Alloys Containing Hafnium and Chromium

open access: yesMetals
Copper alloys containing chromium and hafnium combine elevated mechanical strength and high electrical and thermal conductivity. For the simultaneous enhancement of both material properties, precipitation hardening is the utilized mechanism.
Julia Dölling   +8 more
doaj   +1 more source

Influence of Vanadium and Chromium Addition on Morphology and Composition of Iron Based Phases in AlSi10MgMn Alloy

open access: yesCommunications, 2015
Application of secondary Al-Si alloys is mostly influenced by amount of impurities. Detrimental effect of iron, as the most harmful impurity, refers mainly to morphology of iron intermetallic phases. Morphology of iron phases can be influenced by several
Maria Zihalova   +2 more
doaj   +1 more source

Application of yttrium coatings on chromium- base alloys by metalliding Final report [PDF]

open access: yes
Electroplating and vacuum evaporation of yttrium oxide-chromium oxide coating of chromium alloys for nitrogen embrittlement ...
Berkowitz-Mattuck, J.   +3 more
core   +1 more source

Effect of Heat-Treatment Time on Bending Properties of Cobolt-Chromium Orthodontic Wires [PDF]

open access: yes, 2019
Different protocols appear in the literature with respect to heat-treating cobalt-chromium orthodontic wires. The objective was to determine the effect of variable heat-treatment time and method on the bending properties of CoCr wires.
Hammerbeck, Melanie
core   +1 more source

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