Corrosion and Tribocorrosion Behaviors of Amorphous Carbon Films in Nitric Acid Solutions

CORROSION ◽  
10.5006/2319 ◽  
2018 ◽  
Vol 74 (7) ◽  
pp. 747-756
Author(s):  
Mingling Xie ◽  
Yuzhe Song ◽  
Guangan Zhang ◽  
Qihai Lu ◽  
Xuejun Cui
Keyword(s):  
Stainless Steel ◽  
Friction Coefficient ◽  
Amorphous Carbon ◽  
Carbon Films ◽  
304 Stainless Steel ◽  
Hno3 Solution ◽  
Amorphous Carbon Films ◽  
Type 304 ◽  
Type 304 Stainless Steel ◽  
Carbon Based

The corrosion and tribocorrosion behaviors of Type 304 stainless steel coated by two different amorphous carbon films, including undoped and Cr-doped amorphous carbon films, were investigated in HNO3 solution, and bare Type 304 stainless steel was used for comparison. In static-corrosion environment, the corrosion current densities of the carbon-based films were decreased by 41% to 97%, when compared with stainless steel, thus suggesting that the corrosion protection properties of the films were excellent. Tribocorrosion tests were conducted to synchronously monitor the open-circuit potential and friction coefficient of the films, and the friction coefficient increased with the increase of HNO3 concentration. Therefore, the carbon-based films could effectively improve the wear resistance of Type 304 stainless steel in HNO3 solutions.

OUTOKUMPU TYPE 630

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
304 Stainless Steel ◽  
Type 304 ◽  
Type 304 Stainless Steel

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.

Passivity of Type 304 Stainless Steel–Effect of Plastic Deformation

CORROSION ◽  
1972 ◽  
Vol 28 (7) ◽  
pp. 269-273 ◽  
Author(s):  
K. Elayaperumal ◽  
P. K. De ◽  
J. Balachandra
Keyword(s):  
Plastic Deformation ◽  
Stainless Steel ◽  
304 Stainless Steel ◽  
Type 304 ◽  
Type 304 Stainless Steel

Modeling of Size Effects on the Flow Stress of Type 304 Stainless Steel and Application in Coining Process

2007 ◽  
Author(s):  
Gap-Yong Kim ◽  
Muammer Koc ◽  
Jun Ni
Keyword(s):  
Grain Size ◽  
Stainless Steel ◽  
Flow Stress ◽  
Size Effect ◽  
Size Effects ◽  
Specimen Size ◽  
304 Stainless Steel ◽  
Length Scales ◽  
Type 304 ◽  
Type 304 Stainless Steel

Application of microforming in various research areas has received much attention due to the increased demand for miniature metallic parts that require mass production. For the accurate analysis and design of microforming process, proper modeling of material behavior at the micro/meso-scale is necessary by considering the size effects. Two size effects are known to exist in metallic materials. One is the “grain size” effect, and the other is the “feature/specimen size” effect. This study investigated the “feature/specimen size” effect and introduced a scaling model which combined both feature/specimen and grain size effects. Predicted size effects were compared with experiments obtained from previous research and showed a very good agreement. The model was also applied to forming of micro-features by coining. A flow stress model for Type 304 stainless steel taking into consideration the effect of the grain and feature size was developed and implemented into a finite element simulation tool for an accurate numerical analysis. The scaling model offered a simple way to model the size effect down to length scales of a couple of grains and extended the use of continuum plasticity theories to micro/meso-length scales.

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