PPT-Corrosion of metals and their protection

Reference Spotlight P120121 Rusting parts What is corrosion A The reaction of a metal with oxygen in the air moisture or other substances in the environment is called corrosion B Gold is so . pettitpaintcom 800 2214466 PHYSICAL DATA VEHICLE TYPEModified Epoxy FINISHFlat COLORGray COMPONENTSOne CURING MECHANISMSolvent Release COVERAGE10 sq ft16 oz spray can VOC60 max APPLICATION DATA METHODAerosol Spray NUMBER OF COATS2 or 3 Do not apply It is intended to give an introduction to corrosion and its control in nontechnical terms More technical information is available on other areas of the NPL NCS website Bill Nimmo and Gareth Hinds NPL February 2003 brPage 2br Beginners Guide to Corro The most common example of corrosion is the formation of rust on steel Most corrosion phenomena are of electrochemical nature and consist of at least two reactions on the surface of the corroding metal One of the reactions is the oxidation eg dissol What Causes It . and . What Prevents It ?. What is Corrosion ?. Corrosion is an electrochemical reaction.. The corrosion of metals is an example of an oxidation-reduction reaction, or also referred to as a “re-. Dr. Zamanzadeh (Zee). Geoff Rhodes. Matco Services, Inc.. October 8. th. , 2009. Outline. 1: Introduction. 2: Soil Characteristics. 3: Soil Corrosivity. 4: Parameters effect soil corrosivity. 5: Soil corrosion rate. OF . CORROSION. The huge annual loss due to corrosion is a national waste and should be minimized. Materials already exist which, if properly used, can eliminate 80 % of corrosion loss. Proper understanding of the basics of corrosion and incorporation in the initial design of metallic structures is essential. _ Two methods of combating corrosion which are widely used in Ne metal surface, and this can be monitored by measuring the potential of the metal. The conditions needed to stop corrosion can then be Metals. In the Construction Industry we use metals in the many areas such as;. Structural. Claddings. Architectural Systems. Building Service. Metals. Metals that are commonly used in the Construction Industry are;. (. TKK-2289. ). 15/16 Semester . genap. Instructor: Rama Oktavian; . Vivi. . Nurhadianty. .. Email: rama.oktavian86@gmail.com. Office Hr.:. . T. 11-12. , Th. . 08. -10; 13-15, F. 08-10; 13-15. Corrosion types. (. TKK-2289. ). 15/16 Semester . genap. Instructor: Rama Oktavian; . Vivi. . Nurhadianty. .. Email: rama.oktavian86@gmail.com. Office Hr.:. . T. 11-12. , Th. . 08. -10; 13-15, F. 08-10; 13-15. Corrosion types. Swaroop K. Behera. 1. , . Shvetashwa. Suri. 1. Pradeep Rohatgi. 1. , Nathan Salowitz. 2. 1. Department of Material Science and Engineering, UW-Milwaukee . 2. Department of Mechanical Engineering , UW-Milwaukee. Presented by Tom McKigney. Brance-Krachy Co., Inc.. Houston Texas. . to The Society of Broadcast Engineers. September 10, 2002. THE CORROSION CELL. When two dissimilar metals are connected in an electrolyte such as soil, a corrosion cell is formed. One metal becomes the anode and suffers corrosion while other metal becomes the cathode and corrosion is prevented. . oxidization. of a metal, and the oxide flaking off.. Oxidized metal is commonly called rust. Most commonly oxygen will oxidize a metal.. Either by . [Metal] O. 2. . → . [Metal]O . Or . [Metal] H. 1. Galvanic Series of Metals in Sea Water. The next slide show a table of the reactivity of metals and various alloys in sea water. Base refers to the anodic properties of the metal or alloy. Anodic refers to the giving up of electrons..