Enhancement of wear resistance by sand blasting-assisted rapid plasma nitriding for 304 austenitic stainless steel

2019 ◽  
Vol 36 (5) ◽  
pp. 524-530
Author(s):  
Dong Li ◽  
Jiqiang Wu ◽  
Bin Miao ◽  
Xiaobing Zhao ◽  
Changjun Mao ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Austenitic Stainless Steel ◽  
Plasma Nitriding ◽  
Sand Blasting ◽  
304 Austenitic Stainless Steel

Effect of Pre-Shot Peening on Plasma Nitriding Kinetics of Austenitic Stainless Steel

2013 ◽  
Vol 634-638 ◽  
pp. 2955-2959 ◽  
Author(s):  
Lie Shen ◽  
Liang Wang ◽  
Jiu Jun Xu ◽  
Ying Chun Shan
Keyword(s):  
Stainless Steel ◽  
Surface Layer ◽  
Austenitic Stainless Steel ◽  
Shot Peening ◽  
Plasma Nitriding ◽  
Nitrogen Diffusion ◽  
X Ray Diffraction ◽  
304 Austenitic Stainless Steel ◽  
Strain Induced Martensite ◽  
Kinetics Of

The fine grains and strain-induced martensite were fabricated in the surface layer of AISI 304 austenitic stainless steel by shot peening treatment. The shot peening effects on the microstructure evolution and nitrogen diffusion kinetics in the plasma nitriding process were investigated by optical microscopy and X-ray diffraction. The results indicated that when nitriding treatments carried out at 450°C for times ranging from 0 to 36h, the strain-induced martensite transformed to supersaturated nitrogen solid solution (expanded austenite), and slip bands and grain boundaries induced by shot peening in the surface layer lowered the activation energy for nitrogen diffusion and evidently enhanced the nitriding efficiency of austenitic stainless steel.

Study on Active Screen Plasma Carburizing of Austenitic Stainless Steel

2011 ◽  
Vol 189-193 ◽  
pp. 208-212
Author(s):  
Shao Mei Zheng ◽  
Cheng Zhao
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Plasma Nitriding ◽  
Physical Adsorption ◽  
Sem Analysis ◽  
Carbon Carrier ◽  
Multi Stage ◽  
304 Austenitic Stainless Steel ◽  
Plasma Carburizing ◽  
Active Screen

AISI 304 austenitic stainless steel was carburized at low temperature by means of the active screen plasma carburizing (ASPC). A layer of carbon supersaturated solid solution (i.e. the Sc phase) can be formed on the surface without precipitation of chromium carbide. The hardness of the carburized steel is greatly improved without degradation of its corrosion resistance. ASPC also solves some problems associated with the conventional DC plasma carburizing (DCPC), such as temperature uniformity, edge effect and so on. Particles sputtered from the active screen were collected and analyzed. XRD and SEM analysis indicated that the sputtered particles in sub-micron scale were neutral Fe3C and Fe2C5. The particles play the role of the carbon carrier in ASPC. Therefore, ASPC is also a multi-stage process, involving sputtering, physical adsorption, desorption, diffusion and deposition, the same as active screen plasma nitriding.

Performance enhancement by plasma nitriding at low gas pressure for 304 austenitic stainless steel

Vacuum ◽  
2017 ◽  
Vol 145 ◽  
pp. 334-339 ◽  
Author(s):  
Shijing Lu ◽  
Xiaobing Zhao ◽  
Shukai Wang ◽  
Jingcai Li ◽  
Wei Wei ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Performance Enhancement ◽  
Plasma Nitriding ◽  
Gas Pressure ◽  
304 Austenitic Stainless Steel

Characteristics of Duplex Coating on Austenitic Stainless Steel

2011 ◽  
Vol 465 ◽  
pp. 255-258 ◽  
Author(s):  
Z. Joska ◽  
J. Kadlec ◽  
Vojtěch Hruby ◽  
T. Mrázková ◽  
K. Maňas
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Plasma Nitriding ◽  
Indentation Test ◽  
Duplex Coating ◽  
Pvd Coating ◽  
Material Hardness ◽  
Microhardness Indentation

The aim of the article is describe duplex treatment of austenitic stainless steel X12CrNi 18 8 surface. Combination of both plasma nitriding and PVD coating by TiN/TiCN as a surface treatment has been used to improve material hardness and wear resistance without decreasing corrosion resistance. GDOES, confocal microscopy, microhardness, indentation test were applied to characterize the chemical composition, surface morphology, adhesion and hardness of duplex treated specimens.

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