Effect of Nitrogen Element on Corrosion Resistance of Stainless Steel

- Jul 17, 2020-

Effect of Nitrogen Element on Corrosion Resistance of Stainless Steel


1. Influence at the microstructure of stainless steeThe impact of nitrogen on stainless steel could be very strong. The nitrogen element within the chrome steel matrix can replace part of the nickel element, reduce the.Ferrite content inside the stainless-steel. Helo stabilize the austenite. lessen the precinitation of harmful intermetallir ohases and even take away the martensite transformation duringe cold working.2. Influence on mechanical oroperties of stainless steeThe effect of nitrogen at the mechanical properties of the matrix in stainless-steel is mainly reflected in  aspects. First of all. Nitrogen can sienificantly boom the strength of stainless steel, and will not reduce the plastic longevity of chrome steel. This is a superb have a look at of the direction of high power and toughness of stainless-steel. Secondly, the nitrogen detail can also enhance the creep resistance. Fatigue resistance and put on resistance of the stainless stee3. Influence on corrosion resistance of stainless steelNitrogen is also beneficial for increasing the corrosion resistance of stainless-steel. Mainly to improve the resistance to intergranular corrosion, piting corrosion crevice corrosion, The mechanism of nitrogen resistance to pitting corrosion and crevice corrosion of stainless steel is especially acid consumotion theorv. Nitrogen bureaucracy NH4+, lowers oH value, prevents anode dissolution and slows local acidification. that can inhibit the autocatalytic procedure of pitting corrosion. Secondly.The enrichment of interfacial nitrogen, the enrichment of nitrogen within the passivationfilm of the metal interface close to the steel side will affect the reoassivation kinetics sell the ranid re-nassivation of the chrome steel surfare and therefore plav a function in suporessing pitting corrosion. In addition, nitrogen and other factors can paintings svnergisticall. Nitrogen can inhibit the over-passivation and dissolution of factors together with chromium and molvbdenum, and may produce a stronger floor laver inside the loral corrosion manner of the stainless-steel olate floor and imorove the corrosion resistance of the stainless-steel olate surfare Nitrogen performs an indispensable function inside the stability and corrosion resistance of chrome steel, and considering that nitrogen is cheaper than alloving factors including nickel and chromium, the future improvement space within the discipline of stainless steel have to have unlimited potentiall