Investigation into the formation of Ni splats plasma-sprayed on to mild steel and stainless steel substrates

2022 ◽  
pp. 128095
Author(s):  
Musharaf Abbas ◽  
Arslan Khalid ◽  
Gregory M. Smith ◽  
Paul R. Munroe
Keyword(s):  
Stainless Steel ◽  
Mild Steel ◽  
Plasma Sprayed ◽  
Steel Substrates

Study of the microstructure of NiCr splats plasma sprayed on to stainless steel substrates by TEM

2010 ◽  
Vol 204 (9-10) ◽  
pp. 1608-1615 ◽  
Author(s):  
S. Brossard ◽  
P.R. Munroe ◽  
A.T.T. Tran ◽  
M.M. Hyland
Keyword(s):  
Stainless Steel ◽  
Plasma Sprayed ◽  
Steel Substrates

Influence of Preheating Temperature on the Quality of the Interface between Plasma Sprayed Coatings and Substrate

2014 ◽  
Vol 606 ◽  
pp. 183-186
Author(s):  
Monika Vilémová ◽  
Barbara Nevrlá ◽  
Jiří Matějíček ◽  
Radek Mušálek
Keyword(s):  
Stainless Steel ◽  
Plasma Torch ◽  
Water Stabilized Plasma ◽  
Preheating Temperature ◽  
Substrate Preheating ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Steel Substrates ◽  
Sprayed Coatings

This study was aimed to investigate the effect of the substrate preheating temperature on the overall quality of the coating/substrate interface. The coatings (stainless steel) were deposited using a water stabilized plasma torch (Institute of Plasma Physics, Prague, i.e. IPP, Czech Republic) on steel substrates. Three sets of samples were prepared under identical spraying and grit blasting condition; substrate preheating temperature was the only parameter which was varied, i.e. preheating to 150°C, 250°C and 350°C. Higher preheating temperature led to a significant increase in the coating adhesion.

Microstructure and Properties of Friction Surfaced Stainless Steel and Tool Steel Coatings

2010 ◽  
Vol 638-642 ◽  
pp. 864-869 ◽  
Author(s):  
H. Khalid Rafi ◽  
G.D. Janaki Ram ◽  
G. Phanikumar ◽  
K. Prasad Rao
Keyword(s):  
Stainless Steel ◽  
Mild Steel ◽  
Tool Steel ◽  
Fusion Welding ◽  
Wear Protection ◽  
Metallurgical Bonding ◽  
Steel Aisi ◽  
Bend Tests ◽  
Steel Substrates ◽  
Stainless Steel Aisi

Friction surfacing is a novel solid state surface coating process with several advantages over conventional fusion welding based surfacing processes. In this work, austenitic stainless steel (AISI 310) and tool steel (H13) coatings were friction deposited on mild steel substrates for corrosion and wear protection, respectively. Microstructural studies were carried out by using optical and scanning electron microscopy. Shear tests and bend tests (ASTM A264) were conducted to assess the integrity of the coatings. This study brings out the microstructural features across the coating/substrate interface and its mechanical properties, showing good metallurgical bonding between stainless steel and tool steel coating over mild steel.

Areal Coverage Using Friction Surfacing

1992 ◽  
Vol 8 (03) ◽  
pp. 131-136 ◽  
Author(s):  
Peter Lambrineas ◽  
Peter Jewsbury
Keyword(s):  
Stainless Steel ◽  
Bond Strength ◽  
Mild Steel ◽  
Low Pressure ◽  
Tensile Bond Strength ◽  
Friction Surfacing ◽  
Areal Coverage ◽  
Overlay Coatings ◽  
Steel Substrates

Areal coatings of 304 and 316 marine grade stainless steel were made on flat mild steel substrates using a low-pressure friction surfacing technique and various deposition configurations. The maximum through-thickness tensile bond strength obtained for such coatings was 890 MPa (1.3 × 105 psi). Gaps or cracks or both between strips of deposited material were not eliminated completely during the manufacture of these coatings. Consequently, the overlay coatings described in this paper, which were made using a range of overlapping and non-overlapping deposition configurations, are primarily suitable for applications in noncorrosive environments.

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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