نتایج جستجو برای: metallic surfaces corrosion

تعداد نتایج: 196766  

Journal: :ce/papers 2023

Abstract A hybrid‐based coating is proposed for its performance against accelerated corrosion of steel bars used concrete reinforcement. The innovative, hybrid nano‐modified character the applied during steel's welding process (at around 400°C) ensuring durability and adhesion to while energy saving a necessary feature. With intention comparing product sustainability, both water‐based organic s...

Atapour, M., Chiani, M.,

In this study, corrosion behavior of Ti-6Al-4V titanium alloy joint by friction stir welding with a rotational speed of 375 rpm and a travel speed of 100 mm/min was investigated. The welding procedure was carried out under β-transus temperature that was consisted of equiaxed grains in the stir zone. The corrosion behavior of the welded joint was investigated in 3.5% NaCl solution at temperature...

2012
Rita Reale Susanne H Plattner Giuseppe Guida Maria Pia Sammartino Giovanni Visco

Although it is well known that any material degrades faster when exposed to an aggressive environment as well as that "aggressive" cannot be univocally defined as depending also on the chemical-physical characteristics of material, few researches on the identification of the most significant parameters influencing the corrosion of metallic object are available.A series of ancient coins, coming ...

Journal: :Materials science & engineering. C, Materials for biological applications 2017
R I M Asri W S W Harun M Samykano N A C Lah S A C Ghani F Tarlochan M R Raza

Corrosion prevention in biomaterials has become crucial particularly to overcome inflammation and allergic reactions caused by the biomaterials' implants towards the human body. When these metal implants contacted with fluidic environments such as bloodstream and tissue of the body, most of them became mutually highly antagonistic and subsequently promotes corrosion. Biocompatible implants are ...

Journal: :Environmental Health Perspectives 1990
W E Sharpe D R DeWalle

The aluminum concentration and Ryznar Index increased and the pH decreased in a small Appalachian water supply reservoir following acid precipitation runoff episodes. Concomitant increases in tapwater aluminum and decreases in tapwater pH were also observed at two homes in the water distribution system. Lead concentrations in the tapwater of one home frequently exceeded recommended levels, alth...

2011
Mohammed A. Amin

The electrochemical and corrosion behaviour of Al-6061, Al-4.5%Cu and Al-7.5%Cu alloys were studied in 0.50 M KSCN solution at 25 C. Open-circuit potential, Tafel polarization and ICP-AES measurements were used to study the uniform corrosion process on the surfaces of the tested alloys. Cyclic polarization measurements were employed for pitting corrosion studies. Obtained results were compared ...

2015
Yu Yan Hongjuan Yang Yanjing Su Lijie Qiao

Proteins can adsorb on the surface of artificial joints immediately after being implanted. Although research studying protein adsorption on medical material surfaces has been carried out, the mechanism of the proteins' adsorption which affects the corrosion behaviour of such materials still lacks in situ observation at the micro level. The adsorption of bovine serum albumin (BSA) on CoCrMo allo...

2006
P. Kapsalas M. Zervakis P. Maravelaki-Kalaitzaki

This paper approaches the non-destructive analysis of corrosion damage by testing and evaluating several image segmentation schemes for the detection of decay areas. The application test bed for algorithmic evaluation considers stonework surfaces for corrosion damage. Each of the detection approaches handles in a different way the background inhomogeneities. A semi-automated framework for valid...

2003
Usha B. Nair

he benefits of phosphate pretreatT ments for improving the resistance of ferrous and nonferrous metals to the onset and spread of corrosion is well known.'.2 Increased stress on quality of finishes, the need for process versatility, and stringency of specifications have led to modifications of conventional phosphating formulations and have prompted the need-based development of new baths. The i...

2014
Brian Scharf Cristina C. Clement Valerio Zolla Giorgio Perino Bo Yan S. Gokhan Elci E. Purdue S. Goldring Frank Macaluso Neil Cobelli Richard W. Vachet Laura Santambrogio

Occupational and environmental exposure to Co and Cr has been previously linked to a wide array of inflammatory and degenerative conditions and cancer. Recently, significant health concerns have been raised by the high levels of Cr and Co ions and corrosion products released by biomedical implants. Herein, we set to analyze the biological responses associated with Co and Cr toxicity. Histologic...

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