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Corrosion Damages caused by MIC & Prevention of this corrosion in Water Systems

In water system, some of the microorganisms need oxygen to grow, whereas others will only grow in anaerobic conditions. They can grow in complete darkness, the only requirements for growth being the presence of water and a nutrient source.

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Magnetic cores

Magnetic cores can be divided into two major categories:

  • Structural (shape)
  • Material
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Extrusion of Aluminium and Aluminium Alloys

The term extrusion is usually applied to both the process and the product obtained, when a hot cylindrical billet of aluminium is pushed through a shaped die (forward or direct extrusion).

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Uses of Precious Metal Wire

For the precious metal wires, the range of industrial applications is wide and varied.

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Method for preventing fouling and corrosion caused by ammonium chloride & ammonium sulphate

Prevention fouling and corrosion caused by ammonium chloride and ammonium sulphates particularly formed or present in crude oil refinery processes
Corrosion protection is one of the major concerns in refinery operations where ammonium chloride and ammonium sulphates are generated through the process itself or being imported from other units with the feedstock. Several forms of corrosion are observed.

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Ammonium Chloride Corrosion and Damage in Hydrotreating Units

Damage of ammonium chloride (NH4Cl) corrosion
Ammonium salt, ammonium chloride corrosion is characterized by general or localized corrosion, often pitting corrosion, normally occurring under ammonium chloride or amine salt deposits, and also often in the absence of a free water phase.

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Diffusion Coatings and High Temperature Corrosion

Diffusion coatings is protected the high temperature corrosion of the components by increasing their oxidation or corrosion resistance in the chemical industry, power plants and the aerospace industry.

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Metal Dusting and High Temperature Corrosion

Metal dusting is a catastrophic corrosion, which occurrs at high temperatures (400-900°C) under strongly carburizing and reducing atmospheres such as those from coal gasification, coal liquefaction, petrochemical processes, in synthesis gas reactors and in ammonia (NH3) and methanol (CH3OH) production.

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High Temperature Corrosion and Ceramic Thermal Barrier Coatings

An increase in efficiency and a reduction in the CO2 emission of gas turbines can be achieved by increasing the inlet temperatures by means of thermal barrier coatings (TBC) of ceramic on nickel-base super alloys. For these materials systems there is an urgent need for a reliable life time assessment.

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Industrial High Temperature Corrosion and Titanium Aluminides

Intermetallic materials are titanium aluminides, silicides, etc.Titanium Aluminides are an interesting group of new light-weight materials (specific weight about 4.0 g/cm³) for applications as moving components at high temperature. The temperature range of these materials is limited to about 750°C because of their poor oxidation resistance.

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Iron corrosion & Concretion formation

Cast iron is known for quickly disintegrating if not kept in a wet environment after excavation from the sea. This iron can be corroded by graphitization which leaves behind a metal core but has an outer shell of graphite that contains iron corrosion products.

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Three mechanisms of naphthenic acid corrosion

Generally, in refinery distillation units, naphthenic acid corrosion and high temperature crude corrosivity is a reliability issue.

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CH-TRU, RH-TRU waste & Three primary gas generation mechanisms

CONTACT-HANDLED TRANSURANIC (CH-TRU) AND REMOTE-HANDLED TRANSURANIC (RH-TRU) WASTES

The primary difference between CH-TRU and RH-TRU waste is that RH-TRU waste contains enough gamma-emitting isotopes with relatively short half-lives to produce a radiation dose rate greater than 200 mrem/hr at the external surface of the waste container. The CH-TRU and RH-TRU wastes considered in this study are consistent with the DOE Order 5820.2A definition of TRU waste.

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Metal Corrosion and Geological Disposal Facility

All international designs of geological disposal facilities for radioactive wastes consider the use of several physical barriers, which together provide long-term containment of the wastes.

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The Corrosion Resistant Iron Pillar

The Iron Pillar at Delhi
The iron pillar at Delhi has attracted the attention of archaeologists and corrosion technologists as it has withstood corrosion for the last 1600 years. The several theories have been proposed to explain its superior corrosion resistance which can be broadly classified into two categories: the environmental and the material theories.

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