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Environmental Degradation of Materials
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Radiation Damage
Material changes due to exposure to ionizing radiation, such as gamma rays or neutrons - Shielding materials and radiation-resistant alloys are used for protection.
Galvanic Corrosion
Corrosion that occurs at the interface between two different metals in the presence of an electrolyte - Use of similar metals, isolating materials, or protective coatings can prevent it.
Thermal Degradation
Decomposition of materials when exposed to excessive heat - Thermal stabilization additives and heat-resistant materials can reduce this effect.
UV Degradation
Material weakening due to ultraviolet light - Stabilizers or protective coatings are used for prevention.
Corrosion
Deterioration and loss of material due to chemical reactions - Prevention includes coatings, corrosion inhibitors, and selection of corrosion-resistant materials.
Erosion
Wear of material by flowing liquid or gas carrying abrasive particles - Using erosion-resistant materials or by controlling the flow dynamics.
Creep
Slow, permanent deformation of materials under constant load over time - Using creep-resistant materials and limiting operating temperatures can mitigate the effects.
Stress Corrosion Cracking (SCC)
The combined effect of tensile stress and corrosive environment leading to crack propagation in materials - Prevention through stress relief treatments and using SCC-resistant materials.
Biodegradation
Breakdown of materials by biological means, often by microbes - Biocide treatments and the use of biodegradation-resistant materials can be effective.
Hydrolysis
Chemical breakdown due to reaction with water - Use of hydrolysis-resistant polymers and employing moisture barriers.
Fatigue
Failure of a material due to repeated stress cycling - Design to avoid cyclic loads at resonant frequencies and using fatigue-resistant materials helps prevent.
Fretting
Wear damage at the contact surfaces due to small amplitude oscillation - Lubrication, surface treatment, and designing to avoid relative movement are methods of prevention.
High-Temperature Oxidation
Degradation of materials at high temperatures due to reaction with oxygen - Protection by applying thermal barrier coatings or using oxidation-resistant materials.
Abrasion
Material loss due to mechanical scraping or rubbing - Hardened surfaces, abrasive-resistant materials or coatings, and lubrication are used for protection.
Chemical Weathering
Degradation by chemical reactions with atmospheric conditions - Coatings and corrosion inhibitors can prevent material loss.
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