نتایج جستجو برای: corrosion protection

تعداد نتایج: 209250  

Journal: :CORROSION ENGINEERING 1987

Journal: :Bell Labs Technical Journal 2006
John P. Franey Dawn-Marie Sutton

Telecommunications providers expect products to perform reliably during operation in the field. Achieving the expected hardware reliability is due to an amalgamation of multiple factors. A significant contribution to reliable performance results from the incorporation of specific materials, which are very corrosion resistant and electrostatic discharge (ESD) safe during the design and manufactu...

2002
A. Zeng J. Gao

An electrochemical impedance spectroscopy (EIS) capacitance diagnostic method was developed to measure the nanoporosity in DC magnetron-sputtered diamond-like carbon (DLC) films deposited on highly conductive silicon (111) substrates. The measurement was based on a calibration of artificial defects enclosed in a well-defined area. Films of known nanoporosity, as determined by EIS, were used to ...

2017
Carolina Parra Francisco Montero-Silva Dana Gentil Valeria Del Campo Thiago Henrique Rodrigues da Cunha Ricardo Henríquez Patricio Häberle Carolina Garín Cristian Ramírez Raúl Fuentes Marcos Flores Michael Seeger

In this work we present a study on the performance of CVD (chemical vapor deposition) graphene coatings grown and transferred on Ni as protection barriers under two scenarios that lead to unwanted metal ion release, microbial corrosion and allergy test conditions. These phenomena have a strong impact in different fields considering nickel (or its alloys) is one of the most widely used metals in...

In this study, nanocomposite coatings based on polyurethane cerium nitrate montmorillonite (MMT) were prepared, applied on carbon steel substrates, and investigated. The nanocomposite coatings were successfully prepared by the effective dispersing of nanoparticles in polyurethane resin by mechanical and sonication processes. The state of dispersion, dissolution, and incorporation were character...

2013
İsmail Hakki Karahan

Environmentally friendly and cyanide-free sulfate bath under continuous current and the corrosion behavior of electrodeposits of zinc-iron alloys were studied by means of electrochemical tests in a solution of 3.5% NaCl in presence and absence of glycine. The effects of pH on the quality of Zn-Fe coatings were investigated in order to improve uniformity and corrosion protection performance of t...

2015
N. N. Andreev Yu. I. Kuznetsov A. N. Frumkin

This paper continues the analytical literature review on the theory and practice of metal protection by volatile corrosion inhibitors (VCI) supplemented by our own data. The principles and methods for fast estimation of VCI efficiency are reviewed.

Journal: :Biotechnology and bioengineering 2007
Kazuhiko Miyanaga Ryosuke Terashi Hirofumi Kawai Hajime Unno Yasunori Tanji

Biofilm formed on carbon steel by various species of bacterial cells causes serious problems such as corrosion of steel, choking of flow in the pipe, deterioration of the heat-transfer efficiency, and so on. Cathodic protection is known to be a reliable method for protecting carbon steel from corrosion. However, the initial attachment of bacteria to the surface and the effects of cathodic prote...

Journal: :journal of physical and theoretical chemistry 0
m. rezaei nasab department of chemistry, shahid bahonar university of kerman, kerman 76175, iran m. shahidi department of chemistry, kerman branch, islamic azad university, kerman, iran s.m.a. hosseini department of chemistry, shahid bahonar university of kerman, kerman 76175, iran

in this work, polypyrrole/ceo2 nanocomposite (nc) was synthesized in the presence of methylorange as a reactive self-degraded soft template. the field emission scanning electron microscopy(fesem) images indicate that the ceo2 nps have a nucleus effect and cause a homogenous ppycore–shell type morphology with an encapsulation of the ceo2 core by the ppy shell. the effect ofnc on acrylic waterbor...

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