Results 71 to 80 of about 40,878 (218)

Matching TGF‐β1 Activation With Stress‐Responsive Charge‐Reversal Hydrogel Microspheres for the Treatment of Osteoarthritis

open access: yesExploration, EarlyView.
Based on the interaction between the weakly cross‐linked disulfide bonds that break under stress and charge‐reversal messenger molecules, we herein achieved nanoparticle charge reversal under stress and constructed a stress‐responsive charge‐reversal hydrogel microsphere system using microfluidic technology.
Feng Lin   +11 more
wiley   +1 more source

Tribological Properties of AlSi17Cu5Mg Alloy Modified with CuP Master Alloy with Various Speeds of Friction

open access: yesArchives of Foundry Engineering, 2016
The paper presents the influence of modification with phosphorus (CuP10) on the tribological properties of the alloy AlSi17Cu5Mg coupled abrasively with cast-iron EN GJL-350.
Piątkowski J., Wieszała R.
doaj   +1 more source

Visualizing CO2 Electroreduction Dynamics: Advances in Electrochemical AFM for Catalyst Interfacial Analysis

open access: yesInterdisciplinary Materials, EarlyView.
This review highlights how in situ electrochemical atomic force microscopy (EC‐AFM) bridges materials science and electrochemistry by providing real‐time, nanoscale visualization of catalyst dynamics during CO2 reduction. By uncovering interfacial reconstruction, active‐site evolution, and structure–activity relationships across diverse catalysts, EC ...
Kaixuan Li   +6 more
wiley   +1 more source

A multiscale tribological study of nacre : Evidence of wear nanomechanisms controlled by the frictional dissipated power [PDF]

open access: yes, 2012
Sheet nacre is a hybrid biocomposite with a multiscale structure, including nanograins of CaCO3 (97% wt.% – 40 nm in size) and two organic matrices: (i) the “interlamellar” mainly composed of β-chitin and proteins, and (ii) the “intracrystalline” mainly ...
Stempflé, Philippe   +5 more
core  

New Technique Measuring Film Thickness for Tribological Machines [PDF]

open access: yes, 2009
In the present work, a prototype machine was developed for film thickness measurement for tribological tests. The configuration of the machine was based Block on Ring (BOR) technique.
Yusaf, T. F.   +9 more
core   +1 more source

Current carrying tribological properties of multi arc ion plated titanium nitride doped silver coating

open access: yesMaterials Research Express
Sliding electrical contact materials play a crucial role in the transmission and conversion of electrical energy, but due to various factors such as force, electricity, and heat, the interface exhibits complex wear behavior.
Wu Hao, Yanqiu Xia, Zhang Yi
doaj   +1 more source

Gait alterations increase friction of degenerated articular cartilage: A tribological study

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose To investigate the effect of gait alterations associated with osteoarthritis (OA) on the frictional properties of porcine articular cartilage (AC) in intact and degenerative conditions. Methods Forty‐eight cylindrical AC samples were harvested from 12 porcine femur condyles and equally divided between four groups with n = 12 samples ...
Luisa de Roy   +6 more
wiley   +1 more source

ECO-TRIBOLOGICAL CORRECT DESIGN: NEW DEMANDS OF CONTEMPORARY DESIGN [PDF]

open access: yes, 2010
Tribologically correct design is an important indicator of design quality and technical level of a product. The basic characteristics of such a design are minimisation of friction and wear to possible limits with simultaneous increase of degree of ...
Tanasijević, Slobodan   +2 more
core  

Examining the Evolution of Microstructure and its Effect on the Mechanical and Tribological Properties

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2017
This paper investigates the superior frictional performance of Ti-DLC films, by examining the evolution of microstructure and its effect on the mechanical and tribological properties.
Stela CONSTANTINESCU
doaj  

Tribological performance and wear mechanism of AlCrSiN-DLC composite coatings on PCB carbide microdrills

open access: yesMaterials Research Express
The tribological properties of PCB microdrills have become a critical factor affecting the rapid development of the printed circuit board microvia machining industry.
Tianlei Dong   +8 more
doaj   +1 more source

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