跳至主要内容

Effect of Chloride Concentration on the Corrosion Rate of Maraging Steel

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=51073#.VFMJe2fHRK0'

The corrosion behavior of Maraging steel has been studied by using different techniques, including open circuit potential and polarization measurements in addition to microstructure examination such as optical microscopy and XRD (X-Ray Diffraction) investigation. The corrosion behavior of Maraging steel has been examined in sodium chloride solutions with different concentrations from 0.1 M to 2 M. It was found that the corrosion resistance of Maraging steel is inversely proportional with the concentration of sodium chloride solution. The corrosion resistance is directly proportional to the Mo and Ti content in the Maraging steel. Heat treatment of the Maraging steel improved its mechanical properties with no effect on the corrosion behavior as the precipitation of inter-metallic compounds leading to some galvanic action. However, sample IV having lower Mo content than sample V showed after heat treatment an improvement in the corrosion resistance.
Cite this paper
Desouky, H. and Aboeldahab, H. (2014) Effect of Chloride Concentration on the Corrosion Rate of Maraging Steel. Open Journal of Physical Chemistry, 4, 147-165. doi: 10.4236/ojpc.2014.44018. 

[1] Fathy, A., El-Faramawy, H.S., Mattar, T., Eissa, M. and Bleck, W. (2004) Metals, 1.
[2] Shams El-Din, A.M. and Paul, N.J. (1990) Oxide Film Thickening on the Surface of Metals in Aqueous Solutions: A Critique of the Theory of Open-Circuit Potential Transients. Thin Solid Films, 189, 205-216. http://dx.doi.org/10.1016/0040-6090(90)90449-N
[3] Hegazy, M.M. and Eissa, M.M. (1992) J. of the Faculty of Education, 17, 377.
[4] Shams El-Din, A.M., Wang, L. and Saber, T.M.H. (1994) Behaviour of High Strength Molybdenum Containing Stainless Steels in Arabian Gulf Water. Part 1: Oxide Film Thickening. British Corrosion Journal, 29, 58-64. http://dx.doi.org/10.1179/000705994798267935
[5] Greene, N.D. and Leonard, R.B. (1964) Comparison of Potentiostatic Anodic Polarization Methods. Electrochimica Acta, 9, 45-54. http://dx.doi.org/10.1016/0013-4686(64)80004-9
[6] Fathy, A., Mattar, T., El-Faramawy, H.S. and Bleck, W. (2002) Materials Technology, 12, 549.                                      eww141031lx
标签：

评论

发表评论

此博客中的热门博文

A Comparison of Methods Used to Determine the Oleic/Linoleic Acid Ratio in Cultivated Peanut (Arachis hypogaea L.)

Cultivated peanut ( Arachis hypogaea L.) is an important oil and food crop. It is also a cheap source of protein, a good source of essential vitamins and minerals, and a component of many food products. The fatty acid composition of peanuts has become increasingly important with the realization that oleic acid content significantly affects the development of rancidity. And oil content of peanuts significantly affects flavor and shelf-life. Early generation screening of breeding lines for high oleic acid content greatly increases the efficiency of developing new peanut varieties. The objective of this study was to compare the accuracy of methods used to classify individual peanut seed as high oleic or not high oleic. Three hundred and seventy-four (374) seeds, spanning twenty-three (23) genotypes varying in oil composition (i.e. high oleic (H) or normal/not high oleic (NH) inclusive of all four peanut market-types (runner, Spanish, Valencia and Virginia), were individually tested ...
发表评论
阅读全文

Location Optimization of a Coal Power Plant to Balance Costs against Plant’s Emission Exposure

Fuel and its delivery cost comprise the biggest expense in coal power plant operations. Delivery of electricity from generation to consumers requires investment in power lines and transmission grids. Placing a coal power plant or multiple power plants near dense population centers can lower transmission costs. If a coalmine is nearby, transportation costs can also be reduced. However, emissions from coal plants play a key role in worsening health crises in many countries. And coal upon combustion produces CO 2 , SO 2 , NO x , CO, Metallic and Particle Matter (PM10 & PM2.5). The presence of these chemical compounds in the atmosphere in close vicinity to humans, livestock, and agriculture carries detrimental health consequences. The goal of the research was to develop a methodology to minimize the public’s exposure to harmful emissions from coal power plants while maintaining minimal operational costs related to electric distribution losses and coal logistics. The objective was...
发表评论
阅读全文

Evaluation of the Safety and Efficacy of Continuous Use of a Home-Use High-Frequency Facial Treatment Appliance

At present, many home-use beauty devices are available in the market. In particular, many products developed for facial treatment use light, e.g., a flash lamp or a light-emitting diode (LED). In this study, the safety of 4 weeks’ continuous use of NEWA TM , a high-frequency facial treatment appliance, every alternate day at home was verified, and its efficacy was evaluated in Japanese individuals with healthy skin aged 30 years or older who complained of sagging of the facial skin.  Transepidermal water loss (TEWL), melanin levels, erythema levels, sebum secretion levels, skin color changes and wrinkle improvement in the facial skin were measured before the appliance began to be used (study baseline), at 2 and 4 weeks after it had begun to be used, and at 2 weeks after completion of the 4-week treatment period (6 weeks from the study baseline). In addition, data obtained by subjective evaluation by the subjects themselves on a visual analog scale (VAS) were also analyzed. Fur...
发表评论
阅读全文