Low Friction Stainless Steel Coatings Graphite Doped Elaborated by Air Plasma Sprayed

2004 ◽  
Vol 13 (5) ◽  
pp. 557-563
Author(s):  
A. Harir ◽  
H. Ageorges ◽  
A. Grimaud ◽  
P. Fauchais ◽  
F. Platon
Keyword(s):  
Stainless Steel ◽  
Air Plasma ◽  
Low Friction ◽  
Plasma Sprayed ◽  
Stainless Steel Coatings

Microstructure of 316L Stainless Steel Coating Deposited by the Low Pressure Plasma Spray

2014 ◽  
Vol 644-650 ◽  
pp. 4888-4891
Author(s):  
De Ming Yang ◽  
Bo Han Tian
Keyword(s):  
Stainless Steel ◽  
Plasma Spray ◽  
316L Stainless Steel ◽  
Low Pressure ◽  
Air Plasma ◽  
Pressure Plasma ◽  
Optical Micrograph ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Stainless Steel Coatings

Original equiaxed 316L stainless steel coatings were successfully deposited by the low pressure plasma spray. For comparison, the coatings of 316L stainless steel with normal lamellar structure were also prepared by the air plasma spray (APS). The microstructures were investigated using optical micrograph (OM). The results show that the microstructures of LPPS 316L stainless steel coatings reveal the fine equiaxed microstructures like the solidified stainless steels,which are significantly different from that of APS coatings with lamellar structures.

Experiments and simulation of rapid solidification of air plasma sprayed alloy 625 on stainless steel

2010 ◽  
Vol 204 (9-10) ◽  
pp. 1521-1527 ◽  
Author(s):  
H. Liu ◽  
F. Azarmi ◽  
M. Bussmann ◽  
J. Mostaghimi ◽  
T.W. Coyle
Keyword(s):  
Stainless Steel ◽  
Rapid Solidification ◽  
Air Plasma ◽  
Alloy 625 ◽  
Plasma Sprayed

Effect of Heat Treatment on the Microstructure of Plasma Spray SUS316L Stainless Steel Coating

2015 ◽  
Vol 1101 ◽  
pp. 419-422
Author(s):  
Jin Wang ◽  
Nobuya Shinozaki ◽  
Zhen Su Zeng ◽  
Nobuaki Sakoda
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Large Scale ◽  
Heat Treatments ◽  
Electron Probe Microanalyzer ◽  
Steel Coating ◽  
Sprayed Coating ◽  
Increasing Temperature ◽  
Plasma Sprayed ◽  
Stainless Steel Coatings

A study of the effects of heat treatments of plasma sprayed SUS316L stainless steel coatings was performed. The stainless steel coatings were treated at the conditions of 1273 K and 1373 K for 45 minutes in flowing argon. The effectiveness of the heat treatment was determined using an electron probe microanalyzer (EPMA). The results indicated that the heat treatments were able to significantly affect the composition and the microstructure. After the heat treatment, the interconnected micro-pores were found to appear in the large-scale rod-like oxide in the coating and the content of chromium and manganese in the oxides became higher than that in the as-sprayed coating. The heat-treatment became more effective with increasing temperature.

scholarly journals Suppression of molten salt corrosion by plasma sprayed Ni3Al coatings

2021 ◽  
Author(s):  
Sarah Yasir ◽  
Jose Luis Endrino ◽  
Elena Guillén ◽  
Adrianus Indrat Aria
Keyword(s):  
Stainless Steel ◽  
Corrosion Rate ◽  
Corrosion Behaviour ◽  
Stainless Steel Surface ◽  
Air Plasma ◽  
Oxide Layers ◽  
Salt Corrosion ◽  
Plasma Sprayed ◽  
Steel Substrates ◽  
Al Coating

AbstractCorrosion behaviour of stainless steel 347 was investigated in a molten nitrate salt (60 wt% NaNO3 + 40 wt% KNO3) immersion at 565 °C for up to 3000 h. A growth of stratified oxide layers consisting of NaFeO2, Fe2O3 and Fe3O4 was observed on the stainless steel surface with a constant gravimetric corrosion rate of ~ 0.4 µm/year. The feasibility of using Ni3Al coatings deposited by means of air plasma spray for suppression of corrosion was investigated. Ni3Al coatings were observed to undergo a fast oxidation with a corrosion rate of ~ 2.7 µm/year in the first 500 h, and subsequently stabilise between 500 and 3000 h with no observable changes in microstructure, composition and weight at a corrosion rate of ~ 0.02 µm/year. The results presented in this study strongly suggest that Ni3Al coating suppresses the formation of oxide layers on the surface of stainless steel substrates and can be used as protection against corrosion in the presence of molten nitrate salts, which is of relevance to thermal energy storage applications.

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