2.1 Rouging, a form of uniform corrosion
Rouging, a form of (uniform corrosion)
Corrosion can basically be referred to as an undesired, thermodynamically induced chemical alteration of the surface of a component (in this case: one made of a stainless steel alloy).
Corrosion can basically be referred to as an undesired, thermodynamically induced, chemical alteration of the surface of a component (in this case: one made of a stainless steel alloy).
In stainless steel alloying technology, a wide range of different local and uniform corrosive effects, resulting from various different causes and mechanisms having more or less serious consequences for the component, is known.
In stainless steel alloying technology, a wide range of different local and uniform corrosive effects, resulting from various different causes and mechanisms having more or less serious consequences for the component, is known.
In the case ofrouging effects on a stainless steel surface, the phenomenon is a massive alteration in, serious damage to, or even inversion of the chromium-oxide-rich passive layer due to the influence of oxygen-deficient ultrapure water at temperatures above 60°C, or ultrapure steam. These changes then result in a predominantly iron oxide rouging layer, which can be partially wiped away. The uniform corrosion process described above is referred to as 'rouging' in the related technical literature, which is a term derived from the reddish (Feoxide-rich) material particles that can usually be wiped away.
In the case of rouging effects on a stainless steel surface, the phenomenon is a massive alteration in, serious damage to, or even inversion of the chromium-oxide-rich passive layer due to the influence of oxygen-deficient ultrapure water at temperatures > 60 °C, or ultrapure steam. These changes then result in a predominantly iron oxide rouging layer, which can be partially wiped away. The uniform corrosion process described above is referred to as 'rouging' in the related technical literature, which is a term derived from the reddish (Feoxide-rich) material particles that can usually be wiped away.
Technically speaking, rouging describes the typical golden-yellow to reddish-brown formation of film/discolouration on stainless steel surfaces with long-term exposure to hot, oxygen-deficient, salt-free water.
Technically speaking, rouging describes the typical golden-yellow to reddish-brown formation of film/discolouration on stainless steel surfaces with long-term exposure to hot, oxygen-deficient, salt-free water.