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على طائر نظرةوالحماية التآكل هندسة

الشربينى جمال مهندس ددكتوروالحماية التآكل خبيرهندسة

جذورها من والمشاكل اإلنهيارات وتحليل

Leaking Underground Storage Tank

Close-Up of Leaking Underground Storage Tank

This is a classic example of normal galvanic corrosion experienced on USTs.

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8سورة النحل

Above ground storage tanks (AST) where the ambient summer temperatures are ideal for

bacterial colony growth

Microbialogical Corrosion Attack

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30سورة األنبياء

http://www.intexcorp.com/images/boats/Water-Animation-kayak.gif

Microbially-influenced corrosion of metals at sea is a big safety and financial problem caused by the production of damaging substances such as hydrogen sulphide by sulphate-reducing micro-organisms within biofilms on the surfaces.

There are manifold reasons to avoid corrosion in maritime applications above-sea or sub-sea. Suitable standards to protect parts like boltings and fasteners for many years from corrosion are the cathodic corrosion protection or the use of cost intensive duplex and super duplex steels.

 Steel Life

Cycle

Why Metals Corrode

Refining-Corrosion Cycle

Why Metals Corrode

Corrosion Cycle Example

Basic Interactions that Result in Corrosion

CORROSIVE

ENVIRONMENT MATERIAL OF

CONSTRUCTION

ENGINEERING APPLICATION

CORROSION PROCESS

Aqueous fluids, Sea Water, Acids, Alkalis, Soils

Acidic gases, CO2, H2S

Carbon steel Corrosion resistant alloys

Concrete, Plastics

Stresses applied & residual Heat transfer & Fluid flow

Thermal & Mechanical Cycles

Crystalline Structure of Perfect Solids

Unit Cells for Body-Centered Cubic, Face-CenteredCubic, and Hexagonal Close-Packed Structures

Crystalline Structure of Imperfect Solids

Point Defects in a Crystalline Structure

Self-interstitialimpurity atom Matrix atom

Substitutionalimpurity atom

Interstitialimpurity atom

Vacancy(Void)

Half-Cell Potential Measurement and Cu/CuSO4 Reference Electrode

Electromotive Force Series

Half-Cell Potential Measurement

Electromotive Force Series

Electromotive Force Series for Metals

Measurement of Pipeline Potentials

Corrosion Cell Between Dissimilar Metals

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20سورة الرحمن

Corrosion Cell

http://www.corrosionclinic.com/corrosion_online_lectures/dl.gif

http://www.corrosion.co.za/images/p_tech1.gif

http://upload.wikimedia.org/wikipedia/commons/7/7b/Anim_electrolysis_of_water.gif

http://www.dynamicscience.com.au/tester/solutions/chemistry/redox/galvan5.swf

Corrosion SolutionRemove the Oxygen