scholarly journals Stainless Steel Surface Nitriding in Open Atmosphere Cold Plasma: Improved Mechanical, Corrosion and Wear Resistance Properties

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4836
Author(s):  
Alice O. Mateescu ◽  
Gheorghe Mateescu ◽  
Adriana Balan ◽  
Catalin Ceaus ◽  
Ioan Stamatin ◽  
...  

This work presents preliminary results regarding improving the mechanical, wear and protective properties (hardness, coefficient of friction, corrosion resistance) of AISI 304 stainless steel surfaces by open atmosphere cold plasma surface treatment method. Comparative evaluations of the morphological, corrosion resistance, mechanical and tribological properties for different periods of treatment (using N2 gas for cold plasma generation in an open atmosphere) were performed. AFM surface analyses have shown significant surface morphology modifications (average roughness, FWHM, surface skewness and kurtosis coefficient) of the treated samples. An improved corrosion resistance of the N2 treated surfaces in open atmosphere cold plasma could be observed using electrochemical corrosion tests. The mechanical tests have shown that the surface hardness (obtained by instrumented indentation) is higher for the 304 stainless steel samples than it is for the un-treated surface, and it decreases gradually for higher penetration depths. The kinetic coefficient of friction (obtained by ball-on-disk wear tests) is significantly lower for the treated samples and increases gradually to the value of the un-treated surface. The low friction regime length is dependent on the surface treatment period, with a longer cold plasma nitriding process leading to a significantly better wear behavior.

2012 ◽  
Vol 538-541 ◽  
pp. 298-301
Author(s):  
Feng Tang ◽  
Jin Yong Xu ◽  
Yan Tang ◽  
Cheng Gao ◽  
Peng Gao ◽  
...  

The Cu-Ce infiltration layer was formed on 304 Stainless Steel surface by double glow plasma surface metallurgy technology. The effects of source voltage and cathode voltage on surface alloying concentration, surface hardness and infiltration layer depth were analyzed by comparative test. The results showed: In the experimental range, the contents of Cu and Ce, surface hardness, deposition layer depth increase with the source voltage increasing, which is contrary to the cathode voltage; the diffusion layer depth increases with either voltage increasing in a certain range.


2013 ◽  
Vol 675 ◽  
pp. 322-325
Author(s):  
Feng Tang ◽  
Jin Yong Xu ◽  
Yan Tang ◽  
Cheng Gao ◽  
Bo Gao ◽  
...  

The Cu-Ce infiltration layer was formed on 304 Stainless Steel surface by double glow plasma surface metallurgy technology. The effects of heat insulation temperature and heat insulation time on surface alloying concentration, surface hardness and infiltration layer depth were analyzed by comparative test. The results showed: In the experimental range, the contents of Cu and Ce, surface hardness, diffusion layer depth increase with the temperature and time increasing; the deposition layer depth increases with time increasing and decreases with temperature increasing in a certain range.


Alloy Digest ◽  
1968 ◽  
Vol 17 (4) ◽  

Abstract ENDURO 19-9-SMo is a 19-9 type stainless steel containing molybdenum to greatly increase its resistance to attack by most chemicals. It is nonmagnetic and does not respond to thermal treatment for hardening. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-207. Producer or source: Republic Steel Corporation.


Alloy Digest ◽  
1970 ◽  
Vol 19 (12) ◽  

Abstract SANDVIK 12R72HV is an austenitic chromium-nickel-molybdenum-titanium stainless steel suitable for metal temperature up to about 308 in the power industry and the petrochemical industry. Typical applications are superheater tubes and hydrocarbon crackers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and surface treatment. Filing Code: SS-248. Producer or source: Sandvik.


Alloy Digest ◽  
1962 ◽  
Vol 11 (11) ◽  

Abstract Armco 18-9LW is a low-work-hardening stainless steel developed for severe cold heading, swaging and other cold forming applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-138. Producer or source: Armco Inc., Eastern Steel Division.


Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  

Abstract Outokumpu Type 630 is a martensitic age hardenable alloy of composition 17Cr-4Ni. The alloy has high strength and corrosion resistance similar to that of Type 304 stainless steel. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1238. Producer or source: Outokumpu High Performance Stainless.


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