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11122 Suggestions for the Repair of Crack to a Regen #2 Preheater

Picture for 11122 Suggestions for the Repair of Crack to a Regen #2 Preheater
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Product Number: 51300-11122-SG
ISBN: 2011 11122 CP
Author: Jim Xin Wei
Publication Date: 2011
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Hydrogen embrittlement is one of the Hydrogen damage types that may cause mechanical damage to a metal. There are indications that a large fraction of all the environmentally activated cracking of ferritic and martensitic iron-base alloys, even the titanium-base alloys is due in some way to the interaction of the advancing crack with hydrogen. Due to contact with hydrogen gas, a few ppm of absorbed hydrogen can cause cracking to the metal.

As an example, the suggestions for the prevention /repair of a crack to a Regen #2 Preheater are described in the paper.

Key words: Hydrogen embrittlement, ferritic, diluted Sulfur, Methane formation, grain boundaries, Hydrogen diffusion, electrochemical galvanic reactions, enamel lining
Hydrogen embrittlement is one of the Hydrogen damage types that may cause mechanical damage to a metal. There are indications that a large fraction of all the environmentally activated cracking of ferritic and martensitic iron-base alloys, even the titanium-base alloys is due in some way to the interaction of the advancing crack with hydrogen. Due to contact with hydrogen gas, a few ppm of absorbed hydrogen can cause cracking to the metal.

As an example, the suggestions for the prevention /repair of a crack to a Regen #2 Preheater are described in the paper.

Key words: Hydrogen embrittlement, ferritic, diluted Sulfur, Methane formation, grain boundaries, Hydrogen diffusion, electrochemical galvanic reactions, enamel lining
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