Download or read book Investigating the Crevice Corrosion Behavior of Coated Stainless Steel in Seawater written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Normally, stainless steel is utilized without any type of coating whatsoever. However, there are occasions where coatings may be contemplated. One of present interest to the U.S. Navy is that associated with the use of antifouling coatings on ship hulls fabricated of non-magnetic. austenitic stainless steel. Testing in natural seawater has demonstrated that coatings can protect susceptible stainless steel from barnacle related crevice corrosion and localized corrosion at weldments. However, coating defects and damage create new areas for crevice corrosion to initiate. The risk of serious crevice corrosion damage to the substrate increases with the amount of bare metal exposed. Test results demonstrated that just a few square inches of bare stainless steel is sufficient to support the corrosion reactions producing penetrations in excess of 1.5 mm in less than six months. Even 6% Mo alloys are susceptible. Localized corrosion can be prevented by the use of cathodic protection, as demonstrated by testing with sacrificial zinc anodes. However, the apparent degree of polarization associated with zinc anodes may contribute to blistering and disbonding of the coating. Test results indicate that good surface preparation, expectedly, enhances bonding of the coating to the substrate. This degree of preparation also creates more optimum conditions for crevice corrosion propagation at sites which initiate.
Download or read book Corrosion in Marine and Saltwater Environments II written by D. A. Shifler and published by The Electrochemical Society. This book was released on 2005 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Corrosion in Hot Sea Water in an Experimental Loop Apparatus written by F. W. Fink and published by . This book was released on 1966 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion and Corrosion Control in Saltwater Environments written by D. A. Shifler and published by The Electrochemical Society. This book was released on 2000 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion in Natural Waters written by Calvin H. Baloun and published by ASTM International. This book was released on 1990 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Part I The Effect of Dissolved Ozone on the Corrosion Behavior of Stainless Steels in Artificial Seawater Part II The Effect of Dissolved Ozone on the Corrosion Behavior of Ni Cr Mo Alloys in Artificial Seawater written by and published by . This book was released on 1997 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The corrosion resistance of austenitic stainless steels in artificial seawater containing 0.2 to 0.4 mg/L dissolved ozone was investigated. According to cyclic polarization data, UNS S30400 and S31600 stainless steels are resistant to pit initiation after 8 weeks exposure to ozonated artificial seawater. However, if crevices exist, crevice corrosion is more severe in ozonated vs. aerated artificial seawater. Maximum crevice corrosion penetration rates of 8 and 5 mm/y were recorded for UNS S30400 and S31600, respectively, in ozonated artificial seawater compared to only 0.4 to 0.5 mm/y under aerated conditions. Mixed potential analysis of anodic and cathodic polarization predicts crevice corrosion rates for UNS S31600 that are in excellent agreement with the immersion sample data. Highly alloyed Ni, Cr, Mo, and N-bearing austenitic stainless steels are resistant to crevice corrosion in aerated and ozonated artificial seawater. However, differential oxidation corrosion was observed between surfaces of high and low ozone concentration, leading to local transpassive dissolution manifested as surface etching and superficial intergranular corrosion. After 47 weeks exposure to ozonated artificial seawater, microscopic pitting was observed in crevices of high alloyed stainless steels. Although intergranular corrosion and microscopic pitting of highly alloyed stainless steels are not considered severe, these modes of corrosion warrant further investigation in the interest of corrosion resistance in long term (> 1 year) service under oxidizing conditions in seawater.
Download or read book Seawater Corrosion Handbook written by Mildred Schumacher and published by William Andrew. This book was released on 1979 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Corrosion of Stainless Steels written by D. Féron and published by CRC Press. This book was released on 2021-04-14 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is Number 33 of the Marine Corrosion of Stainless Steels, a publication of the European Federation of Corrosion (EFC). Part I of this volume on the "Marine Corrosion of Stainless Steels" consists of five chapters and is concerned with tests that were conducted in the 1990s on the corrosivity of European sea waters (Atlantic, Baltic, English Channel, Mediterranean, and North Sea) towards three types of stainless steels. Results from these two test programmes were presented at a European Workshop on Sea Water Corrosion of Stainless Steels in Trondheim in 1996 and at various corrosion conferences, mostly in Europe. The other four chapters in Part I describe experimental procedures, critical pitting temperature data, crevice corrosion results and results from the MAST biofilm studies. The remaining 23 chapters of the book are concerned with reviews and reports that develop the above topics.
Download or read book Survey of Literature on Crevice Corrosion 1979 1998 written by F. P. IJsseling and published by Woodhead Publishing Limited. This book was released on 2000 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crevice corrosion is a complex and technically interesting corrosion mechanism but its commercial significance should not be ignored. This survey, the most complete overview of crevice corrosion available today, covers many alloys which can suffer crevice attack but focuses mainly on stainless steels. The survey covers mechanisms, test methods and results, practical experience, protective measures and monitoring.
Download or read book Seawater Crevice Corrosion Resistance of Stainless Steels Coated with Silane and Antifouling Paint Systems written by and published by . This book was released on 2002 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Normally, stainless steel is utilized without any type of coating whatsoever. However, there are occasions where coatings may be contemplated. One of present interest to the U.S. Navy is that associated with the use of antifouling coatings on ship hulls fabricated of non-magnetic, austenitic stainless steel. Testing in natural seawater has demonstrated that coatings can protect susceptible stainless steel from barnacle related crevice corrosion and localized corrosion at weldments. However, coating defects and damage create new areas for crevice corrosion to initiate. As discussed in an earlier project report documenting contract N00014-97-C-0216, specimens of several grades of stainless steel were extremely susceptible to crevice corrosion when partially coated with epoxy alone, or when top coated with antifouling paints of the ablative-Cu and elastomeric types. The use of zinc-rich primers is known to enhance resistance to crevice corrosion, but their use raises other issues. Of chief concern is the possibility of liquid metal embrittlement if the stainless steel were ever heated above the melting temperature for zinc. This current project addresses the alternate use of organic silane type coatings. Ideally, silane would eliminate the need for a zinc-rich primer and the epoxy barrier coating. Current test results show promise when silane is applied as an ultra-thin film on 6 Mo stainless steel. Additional testing is proposed to resolve potential problems when silane + ablative-Cu coated stainless steel is subjected to cathodic protection. Because of the apparent lack of insulation provided by the thin-film silane, cathodic disbondment of the topcoat has been observed.
Download or read book A Working Party Report on Sea Water Corrosion of Stainless Steels Mechanisms and Experiences written by European Federation of Corrosion and published by Woodhead Publishing Limited. This book was released on 1996 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains papers presented at a workshop in 1995 organised by SINTEF Corrosion and Surface Technology (Trondheim) in co-operation with the EFC Working Parties on Marine Corrosion and Microbial Corrosion. Particular attention was given to biofilms, their causes, effects and prevention, as well as to the behaviour in seawater of high alloyed austenitic stainless steels including 6Mo, and super duplex stainless steels.
Download or read book The Corrosion Behavior of Stainless Steels in Sea Water written by M. H. Peterson and published by . This book was released on 1967 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The corrosion behavior of several series of stainless steels is discussed. Photographs of typical attack in both experimental panels and operational equipment are shown. Because of the susceptibility of stainless steel to pitting, its use in sea water should be avoided in new designs. The 300 series, however, may be used if provided with cathodic protection. The 400 series stainless steels are unsuitable for use in sea water even if provided with cathodic protection. (Author).
Download or read book Crevice Corrosion Behavior of 45 Molybdenum Containing Stainless Steels in Seawater written by Harvey P. Hack and published by . This book was released on 1981 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thirty-six wrought and nine cast commercial molybdenum-containing stainless steels and nickel alloys were exposed to filtered natural seawater at 30 degree C for 30 days using multiple-crevice washers to create a crevice condition. The relative crevice corrosion behavior of these alloys in seawater is analyzed, and the effect of composition discussed. (Author).
Download or read book Use of Coatings to Assess the Crevice Corrosion Resistance of Stainless Steels in Warm Seawater written by RM. Kain and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper focuses on the utility of epoxy-type coatings for testing the crevice corrosion resistance of a variety of stainless type alloys in warm, natural seawater. Details of surface preparation, coating application and exposure to 30°C seawater for periods of up to six months are provided. Testing comprised exposure of UNS S31603, UNS N08367 and UNS S20910 in one or more of the following forms: pipe, sheet, welded plate. Results are discussed in terms of alloy resistance to crevice corrosion initiation and propagation. The attributes of coatings as a crevice former are reviewed. While alloy N08367 was clearly the most resistant to crevice corrosion initiation at coating sites, it suffered intense attack in some cases.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion of Titanium written by J. D. Jackson and published by . This book was released on 1966 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methodology of Crevice Corrosion Testing for Stainless Steels in Natural and Treated Seawaters written by Ulf Kivisäkk and published by CRC Press. This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crevice corrosion in chloride-containing environments, particularly sea water, poses a serious threat to the integrity of stainless steels and has been responsible for many failures. The need for a reliable test method to measure the susceptibility of passive metals to crevice corrosion in sea water has been addressed recently in a major European Programme, CREVCORR. This work was coordinated by Bard Espelid of DNV (Norway) and involved collaboration between ten different companies in six European countries. Many members of EFC Working Party 9 (Marine Corrosion) participated in the work. The first nine chapters of the book describe the development of the new crevice corrosion test method for plate and tubular materials and its application to a number of austenitic, ferritic and duplex stainless steels. A key aim was to develop a crevice corrosion test procedure where the biological activity and oxidation capacity of natural and treated sea waters are simulated electrochemically. Another important aspect of the work was to formulate a new synthetic sea water capable of simulating the corrosiveness of natural and treated sea waters, including the effects of the bio-films that can form in natural waters. The final chapter presents the results of two large collaborative test programmes involving a total of 19 laboratories in eight countries worldwide. These involved tests in natural and synthetic sea waters to evaluate the new crevice test and synthetic sea water. The book will be of value to scientists and engineers engaged in the selection of stainless steels for applications in sea water and other chlorinated natural environments.
