Glossary of Corrosion Related Terms

POLYGUARD PRODUCTS, INC.

	GLOSSARY OF TERMS "B"
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
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	BACKFILL	Material placed in a drilled hole to fill space around anodes, vent pipe, and buried components of a cathodic protection system.
	BAINITE	A metastable aggregate of ferrite and cementite resulting from the transformation of austenite at temperatures below the pearlite range but above Ms, the martensite start temperature. Bainite formed in the upper part of the bainite transformation range has a feathery appearance; bainite formed in the lower part of the range has an acicular appearance resembling that of tempered martensite.
	BANDED STRUCTURE	A segregated structure consisting of alternating nearly parallel bands of different composition, typically aligned in the direction of primary hot working.
	BASE	A chemical substance that yields hydroxyl ions (OH) when dissolved in water. Compare with acid.
	BASE METAL	(1) The metal present in the largest proportion in an alloy; brass, for example, is a copper-base alloy. (2) An active metal that readily oxidizes, or that dissolves to form ions. (3) The metal to be brazed, cut, soldered, or welded. (4) After welding, that part of the metal which was not melted.
	BENCH MARKS	Macroscopic progression marks on a fatigue fracture or stress-corrosion cracking surface that indicate successive positions of the advancing crack front. The classic appearance is of irregular elliptical or semielliptical rings, radiating outward from one or more origins. Beach marks (also known as clamshell marks or arrest marks) are typically found on service fractures where the part is loaded randomly, intermittently, or with periodic variations in mean stress or alternating stress. See also striation.
	BIAXIAL STRESS	(Principal Stress) The maximum or minimum value at the normal stress at a point in a plane considered with respect to all possible orientations of the considered plane. On such principal planes the shear stress is zero. There are three principal stresses on three mutually perpendicular planes. The state of stress at a point may be (1) uniaxial, a state of stress in which two of the three principal stresses are zero, (2) biaxial, a state of stress in which only one of the three principal stresses is zero, and (3) triaxial, a state of stress in which none of the principal stresses is zero. Multiaxial stress refers to either biaxial or triaxial stress.
	BIMETALLIC CORROSION	(Galvanic Corrosion) Corrosion resulting from dissimilar metal contact.
	BIOLOGICAL CORROSION	Deterioration of metals as a result of the metabolic activity of microorganisms.
	BIPOLAR ELECTRODE	An electrode in an electrolytic cell that is not mechanically connected to the power supply, but is so placed in the electrolyte, between the anode and cathode, that the part nearer the anode becomes cathodic and the part nearer the cathode becomes anodic. Also called intermediate electrode.
	BITUMINOUS COATING	Coal tar or asphalt-based coating.
	BLACK LIQUOR	The liquid material remaining from pulpwood cooking in the soda or sulfate paper making process.
	BLACK OXIDE	A black finish on a metal produced by immersing it in hot oxidizing salts or salt solutions.
	BLISTER	A raised area. often dome shaped, resulting from (1) loss of adhesion between a coating or deposit and the base metal or (2) delamination under the pressure of expanding gas trapped in a metal in a near-subsurface zone. Very small blisters may be called pinhead blisters or pepper blisters.
	BLOW DOWN	(1) Injection of air or water under high pressure through a tube to the anode area for the purpose of purging the annular space and possibly correcting high resistance caused by gas blocking. (2) In connection with boilers or cooling towers, the process of discharging a significant portion of the aqueous solution in order to remove accumulated salts, deposits, and other impurities.
	BLUE BRITTLENESS	Brittleness exhibited by some steels after being heated to a temperature with in the range of about 200 to 370°C (400 to 700°F), particularly if the steel is worked at the elevated temperature.
	BLUSHING	Whitening and loss of gloss of a usually an organic coating caused by moisture. Also called blooming.
	BRACKISH WATER	(1) Water having salinity values ranging from approximately 0.5 to 17 parts per thousand. (2) Water having less salt than seawater, but undrinkable.
	BREAKDOWN POTENTIAL	The least noble potential where pitting or crevice corrosion, or both, will initiate and propagate.
	BRIGHTENER	An agent or combination of agents added to an electroplating bath to produce a smooth, lustrous deposit.
	BRINE	Seawater containing a higher concentration of dissolved salt than that of the ordinary ocean.
	BRITTLE FRACTURE	Separation of a solid accompanied by little or no macroscopic plastic deformation. Typically, brittle fracture occurs by rapid crack propagation with less expenditure of energy than for ductile fracture.
	BURNING	(1) Permanently damaging a metal or alloy by heating to cause either incipient melting or intergranular oxidation. See also over-heating. (2) In grinding, getting the work hot enough to cause discoloration or to change the microstructure by tempering or hardening.

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