PPT-1 Intergranular Corrosion

2 INTERGRANULAR CORROSION INTERGRANULAR ATTACK IGA Metals are usually polycrystalline an assemblage of singlecrystal grains separated by grain boundaries Grain boundary in a polycrystalline metal twodimensional representation . 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-. Corrosion. Corrosion-An . 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. . → . (. 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. Interim Report. March 3, 2017. Kurtis Gurley, PhD, . Professor . of Civil Engineering. Engineering School of Sustainable Infrastructure & Environment. University of Florida. 2015 – 2016 Work. Goals:. 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. . (“Flow-Assisted”. . or “Flow-Accelerated”. . Corrosion). An increase in corrosion brought about by a high relative velocity between the corrosive environment and the surface.. Removal of the metal may be:. Department of Chemical Engineering. University of Engineering and Technology Lahore. Wear Types. Corrosion. Corrosion is the disintegration of a material into its constituent atoms due to chemical reactions with its surroundings. Harry D. Gong, Jr., P.E.. Engineering Coordinator. Drinking Water Revolving Loan Fund. Bureau of Public Water Supply. Mississippi State Department of Health. Agenda. History of Mississippi’s Corrosion Control Law. . CORROSION. Narrow openings, gaps, spaces, pores etc. between metal-metal components or metal-non-metal components may provoke localized corrosion.. NOTE: unintentional crevices (seams, cracks etc.) can also act in the same way. 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.. T the U.S. Congress in 1999 as part of the Transportation Equity Act for the 21st es was conducted from 1999 to 2001 by CC Technologies Laboratories, Inc., with support c industry sectors, extrapola Corrosion monitoring is a continuous process of monitoring equipment or components for the signs of corrosion. The primary aim is to identify and resolve corrosion-causing conditions to prevent failures and extend the life of the equipment. Early identification of corrosion signs and measuring the effectiveness of corrosion management are the main two objectives of corrosion monitoring. There are many techniques available to measure such data. In this article let us look at some of the best online corrosion monitoring system available.