Corrosion resistance - Revision history

Editor at 17:12, 12 January 2022

2022-01-12T17:12:06Z

← Older revision		Revision as of 17:12, 12 January 2022
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	* Corrosion in built assets.		* Corrosion in built assets.
	* Corrosion inhibitor.		* Corrosion inhibitor.
		+	* Corrosion resistant alloy CRA.
	* Finishes.		* Finishes.
	* Paint.		* Paint.

Editor at 18:21, 10 January 2022

2022-01-10T18:21:31Z

← Older revision		Revision as of 18:21, 10 January 2022
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	* Finishes.		* Finishes.
	* Paint.		* Paint.
		+	* Patination.
	* Rust.		* Rust.
	* Sealants in construction.		* Sealants in construction.

Editor at 19:35, 20 December 2021

2021-12-20T19:35:37Z

← Older revision		Revision as of 19:35, 20 December 2021
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	* Stainless steel in construction.		* Stainless steel in construction.
	* Wrought iron.		* Wrought iron.
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Products_/_components]]

Designing Buildings at 07:23, 6 December 2021

2021-12-06T07:23:14Z

← Older revision		Revision as of 07:23, 6 December 2021
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	= Introduction =		= Introduction =

−	Corrosion is the gradual destruction of ~~metals~~ (~~mostly~~) due to natural processes~~, of which the main is~~ oxidation~~, although there are others~~. It occurs when materials are exposed to the environment and are attacked by liquids or gasses whose actions instigate chemical reactions.	+	Corrosion is the gradual destruction of materials (often metals) due to natural processes such as oxidation. It occurs when materials are exposed to the environment and are attacked by liquids or gasses whose actions instigate chemical reactions.

−	Corrosion resistance ~~is a term used to describe~~ the ease with which materials react to ~~adverse~~ conditions ~~or elements that may take place within a given environment~~. Corrosion resistant materials are generally able to withstand deterioration and chemical breakdown ~~that would take place under certain environmental conditions~~.	+	Corrosion resistance describes the ease with which materials react to potentially corrosive conditions. Corrosion resistant materials are generally able to withstand deterioration and chemical breakdown.

	= Calculating corrosion resistance rates =		= Calculating corrosion resistance rates =

−	It is possible to calculate the corrosion resistance rate of materials in terms of weight loss or thickness loss in mils (0.001 inch) per year (mpy) or millimetres per year (mm/yr). The most accurate way to determine this rate is ~~by taking the calculation based on where~~ the surface of the material has corroded uniformly across the area that has been exposed.	+	It is possible to calculate the corrosion resistance rate of materials in terms of weight loss or thickness loss in mils (0.001 inch) per year (mpy) or millimetres per year (mm/yr). The most accurate way to determine this rate is when the surface of the material has corroded uniformly across the area that has been exposed. Corrosion resistance rates are typically measured in testing environments where conditions such as pressure, temperature and air velocity are controlled.
−		+
−	Corrosion resistance rates are typically measured in testing environments where conditions such as pressure, temperature and air velocity are controlled.	+

	= Resistant metals and alloys =		= Resistant metals and alloys =
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	Other metals are less stable and require corrosion resistant treatments such as the application of paints or coatings that can prevent or delay the onset of the process. Other corrosion resistance methods (such as galvanising and anodising) can be applied early in the manufacturing process.		Other metals are less stable and require corrosion resistant treatments such as the application of paints or coatings that can prevent or delay the onset of the process. Other corrosion resistance methods (such as galvanising and anodising) can be applied early in the manufacturing process.

−	Some metal alloys ~~can~~ corrode simply on exposure to air, but the process can be exacerbated by the presence of ~~warm temperatures~~ and certain substances such as sulphates and other acidic agents. These alloys also require the application of corrosion inhibitors.	+	Some metal alloys corrode simply on exposure to air, but the process can be exacerbated by the presence of heat and certain substances such as sulphates and other acidic agents. These alloys also require the application of corrosion inhibitors.

	= Corrosion proofing =		= Corrosion proofing =

−	Corrosion proofing ~~is a term that describes~~ products or structures that incorporate high corrosion resistance properties directly into the manufacturing process. Corrosion proofing can come in the form of structural coatings that stop chemical and electrochemical reactions.	+	Corrosion proofing relates to products or structures that incorporate high corrosion resistance properties directly into the manufacturing process. Corrosion proofing can come in the form of structural coatings that stop chemical and electrochemical reactions. This term is also sometimes used as a marketing term to describe products that are intended to provide permanent protection against corrosion.
−		+
−	This term is also sometimes used as a marketing term to describe products that are intended to provide permanent protection against corrosion.	+

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Editor at 18:04, 3 December 2021

2021-12-03T18:04:32Z

← Older revision		Revision as of 18:04, 3 December 2021
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	Corrosion resistance is a term used to describe the ease with which materials react to adverse conditions or elements that may take place within a given environment. Corrosion resistant materials are generally able to withstand deterioration and chemical breakdown that would take place under certain environmental conditions.		Corrosion resistance is a term used to describe the ease with which materials react to adverse conditions or elements that may take place within a given environment. Corrosion resistant materials are generally able to withstand deterioration and chemical breakdown that would take place under certain environmental conditions.

−	= ~~Corrosion~~ resistance rates =	+	= Calculating corrosion resistance rates =

	It is possible to calculate the corrosion resistance rate of materials in terms of weight loss or thickness loss in mils (0.001 inch) per year (mpy) or millimetres per year (mm/yr). The most accurate way to determine this rate is by taking the calculation based on where the surface of the material has corroded uniformly across the area that has been exposed.		It is possible to calculate the corrosion resistance rate of materials in terms of weight loss or thickness loss in mils (0.001 inch) per year (mpy) or millimetres per year (mm/yr). The most accurate way to determine this rate is by taking the calculation based on where the surface of the material has corroded uniformly across the area that has been exposed.
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	* Corrosion in built assets.		* Corrosion in built assets.
	* Corrosion inhibitor.		* Corrosion inhibitor.
−	* Paint.
	* Finishes.		* Finishes.
		+	* Paint.
	* Rust.		* Rust.
	* Sealants in construction.		* Sealants in construction.

Editor: Created page with "= Introduction = Corrosion is the gradual destruction of metals (mostly) due to natural processes, of which the main is oxidation, although there are others. It occurs when mate..."

2021-12-03T17:59:15Z

Created page with "= Introduction = Corrosion is the gradual destruction of metals (mostly) due to natural processes, of which the main is oxidation, although there are others. It occurs when mate..."

New page

= Introduction =

Corrosion is the gradual destruction of metals (mostly) due to natural processes, of which the main is oxidation, although there are others. It occurs when materials are exposed to the environment and are attacked by liquids or gasses whose actions instigate chemical reactions.

Corrosion resistance is a term used to describe the ease with which materials react to adverse conditions or elements that may take place within a given environment. Corrosion resistant materials are generally able to withstand deterioration and chemical breakdown that would take place under certain environmental conditions.

= Corrosion resistance rates =

It is possible to calculate the corrosion resistance rate of materials in terms of weight loss or thickness loss in mils (0.001 inch) per year (mpy) or millimetres per year (mm/yr). The most accurate way to determine this rate is by taking the calculation based on where the surface of the material has corroded uniformly across the area that has been exposed.

Corrosion resistance rates are typically measured in testing environments where conditions such as pressure, temperature and air velocity are controlled.

= Resistant metals and alloys =

Certain metals have better natural resistance to corrosion, this is why metals such as gold and platinum are almost always found naturally in pure form. There are also some metals (such as steel, zinc and copper) where the oxide that forms (sometimes called a ‘patina’) acts to seal the surface and produce a protective corrosion resistant barrier.

There are some corrosion resistant alloys (CRAs) that have better inherent corrosion resistance than pure metals. Examples of CRAs include:

* Chrome
* Cobalt
* Iron
* Nickel
* Stainless steel
* Titanium

= Metals and alloys susceptible to corrosion =

Other metals are less stable and require corrosion resistant treatments such as the application of paints or coatings that can prevent or delay the onset of the process. Other corrosion resistance methods (such as galvanising and anodising) can be applied early in the manufacturing process.

Some metal alloys can corrode simply on exposure to air, but the process can be exacerbated by the presence of warm temperatures and certain substances such as sulphates and other acidic agents. These alloys also require the application of corrosion inhibitors.

= Corrosion proofing =

Corrosion proofing is a term that describes products or structures that incorporate high corrosion resistance properties directly into the manufacturing process. Corrosion proofing can come in the form of structural coatings that stop chemical and electrochemical reactions.

This term is also sometimes used as a marketing term to describe products that are intended to provide permanent protection against corrosion.

= Related articles on Designing Buildings =

* Corrosion in built assets.
* Corrosion inhibitor.
* Paint.
* Finishes.
* Rust.
* Sealants in construction.
* Smart coating.
* Stainless steel in construction.
* Wrought iron.