Index.php
From Kokorodatabase
All metals and certain polymers and ceramics are susceptible to corrosion, that's typically created by the existence of moisture in the air or direct contact with water. In metals this procedure is oxidation: the alteration of electrostatic charge where oxides or salts are made, resulting in damage to the structure of the metal. Rusting, the production of red oxide within an iron structure, is a common illustration of this. The word 'degradation' is applied to the corrosion of non-metals, though the process is similar: the corroding material surrenders electrons in a chemical reaction and drops its structural integrity. Corrosion testing does apply for the following sorts of damage.
Galvanic corrosion happens when two metals enter into contact inside an electrolytic medium or one metal is encountered with two different electrolytes. Microbiologically Influenced Corrosion is the result of micro-organisms attacking a metallic or non-metallic material either without or with the presence of oxygen; as an example Accelerated Low Water Corrosion damages steel piles around the low-water mark, leaving behind an orange sludge for a deposit. Aerospace materials, engines or power-generation materials are common cases of substances prone to High Temperature Corrosion. Metal Dusting happens in high-carbon-dioxide contexts, developing a tell-tale film of graphite on metal and reducing that metal to powder.
Corrosion testing involves the promotion of deterioration in test samples to ascertain the extent and rate of any damage by corrosion in the environment. Accelerated Corrosion Testing is a strategy intended to calibrate the long-term effects on the system of alternating wet and dry cycles, creating the production of partially dry corrosion agents that exacerbate degradation within the system. Typical will be the ISO 11474 test, which employs an outdoor intermittent salt-water spray.
Weld testing for corrosion damage or other structural compromise can be done via Dye Penetrant Inspection. Penetrant is applied to a test surface and left for 5-30 minutes. Developer, such as dry powder or Non-Aqueous Wet Developer (e.g. acetone), draws penetrant from defects in a visible ‘bleed-out’ process. Additional weld testing methods involve Magnetic Particle Testing, X-rays, 3D X-rays and microscopy: all considered as Non-Destructive Inspection procedures. All metals and certain polymers and ceramics are inclined to corrosion, that's typically developed by the presence of moisture in the air or direct experience of water. In metals this method is oxidation: the alteration of electrostatic charge whereby salts or oxides are produced, causing damage to the structure of the metal. Rusting, the creation of red oxide within an iron structure, is a very common instance of this. The word 'degradation' is applied to the corrosion of non-metals, but the process is similar: the corroding material surrenders electrons in a chemical reaction and drops its structural integrity. Corrosion testing can be applied for the following varieties of damage.
Galvanic corrosion develops when two metals enter into contact inside an electrolytic medium or one metal is exposed to two different electrolytes. Microbiologically Influenced Corrosion is as a result of micro-organisms assaulting a metallic or non-metallic material either without or with the presence of oxygen; for example Accelerated Low Water Corrosion damages steel piles round the low-water mark, leaving behind an orange sludge as a deposit. Aerospace materials, engines or power-generation materials are common instances of substances vulnerable to High Temperature Corrosion. Metal Dusting occurs in high-carbon-dioxide contexts, developing a tell-tale film of graphite on metal and reducing that metal to powder.
Corrosion testing necessitates the promotion of deterioration in test samples to determine the rate and extent of any damage by corrosion within the environment. Accelerated Corrosion Testing is a strategy which is designed to calibrate the long-term effects on a system of alternating wet and dry cycles, creating the production of partially dry corrosion agents that worsen degradation within the system. Typical will be the ISO 11474 test, which employs an outdoor intermittent salt-water spray.
Weld testing for corrosion damage or any other structural compromise can be done via Dye Penetrant Inspection. Penetrant is used to a test surface and left for 5-30 minutes. Developer, such as dry powder or Non-Aqueous Wet Developer (e.g. acetone), draws penetrant from defects in a visible ‘bleed-out’ process. Various other weld testing methods consist of Magnetic Particle Testing, X-rays, 3D X-rays and microscopy: all listed as Non-Destructive Inspection procedures.
