Glossary of Corrosion Related Terms

POLYGUARD PRODUCTS, INC.

	GLOSSARY OF TERMS "L"
THE SOLUTION TO CORROSION UNDER INSULATION
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RG-2400 STOPS CORROSION	GLOSSARY OF CORROSION RELATED TERMS
RG-2400 will STOP existing corrosion and will prevent corrosion on new piping systems. Minimal surface preparation is required.

The Corrosion Process Science of Minetics/Surface Conversion Buffering Water Vapor Corrosion Under Insulation (CUI) Corrosion Control Corrosion Prevention Corrosion Remediation Priming and Painting Stainless Steel Stress Crack Corrosion (SCC) Corrosion on Steam Systems Corrosion on Tanks & Vessels Corrosion Anti-Seize Corrosion on Valves Corrosion Control in Natural Gas Vaults Corrosion Control on Bridges Corrosion Control on Marine & Oil Derek Pilings "Down Hole" Corrosion Control Insulation Joint Sealers Specialty Military Installations RG-2400 LT RG-2400 AK RG-2400 ET RG-2401 RG-1700 RG-2400 has many uses: Anti-Seize (Bolts) Bridge Rockers Steel Cable Steel Piers & Pilings Pig Doors Flange Bolts Unions	A \| B \| C \| D \| E \| F \| G \| H \| I \| J \| K \| L \| M \| N \| O \| P \| Q \| R \| S \| T \| U \| V \| W \| X \| Y \| Z
	L
	LACQUER	A coating whose film forming material is dissolved in a solvent - the coating dries by solvent evaporation (usually refers to a clear paint film but dyes may be added for coloring).
	LAMELLAR CORROSION	See exfoliation corrosion.
	LAMELLAR TEARING	Occurs in the base metal adjacent to weldments due to high through-thickness strains introduced by weld metal shrinkage in highly restrained joints. Tearing occurs by decohesion and linking along the working direction of the base metal; cracks usually run roughly parallel to the fusion line and are steplike in appearance. Lamellar tearing can be minimized by designing joints to minimize weld shrinkage stresses and joint restraint. See also cold cracking, hot cracking, and stress-relief cracking.
	LANGELIER SATURATION INDEX	An index calculated from total dissolved solids, calcium concentration, total alkalinity, pH and solution temperature that shows the tendency of a water solution to precipitate or dissolve calcium carbonate.
	LEAK (water distribution systems)	Hole or joint failure of lower severity than a break.
	LEDEBURITE	The eutectic of the iron-carbon system, the constituents of which are austenite and cementite. The austenite decomposes into ferrite and cementite on cooling below the temperature at which transformation of austenite to ferrite or ferrite plus cementite is completed.
	LIGAND	The molecule, ion, or group bound to the central atom in a chelate or a coordination compound.
	LIMITING CURRENT DENSITY	The maximum current density that can be used to obtain a desired electrode reaction without undue interference such as from polarization.
	LINEAR ELASTIC FRACTURE MECHANICS	A method of fracture analysis that can determine the stress (or load) required to induce fracture instability in a structure containing a crack like flaw of known size and shape. See also fracture mechanics and stress-intensity factor.
	LIPOPHILIC	Having an affinity for oil. See also hydrophilic and hydrophobic.
	LIQUID METAL EMBRITTLEMENT	Catastrophic brittle failure of a normally ductile metal when in contact with a liquid metal and subsequently stressed in tension.
	LOCAL ACTION	Corrosion due to the action of "local cells," that is, galvanic cells resulting from inhomogeneities between adjacent areas on a metal surface exposed to an electrolyte.
	LOCAL CELL	A galvanic cell resulting from inhomogeneities between areas on a metal surface in an electrolyte. The inhomogeneities may be of physical or chemical nature in either the metal or its environment.
	LOCALIZED CORROSION	Corrosion at discrete sites, for example, crevice corrosion, pitting, and stress-corrosion cracking.
	LONG-LINE CURRENT	Current that flows through the earth from an anodic to a cathodic area of a continuous metallic structure. Usually used only where the areas are separated by considerable distance and where the current results from concentration-cell action.
	LUGGIN PROBE (luggin Haber capillary)	A small tube or capillary filled with electrolyte, terminating close to the metal surface under study, and used to provide an ionically conducting path without diffusion between an electrode under study and a reference electrode.

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RG-2400 STOPS CORROSION - PERIOD.
"WHEN IT'S BLUE YOU'RE THROUGH!"