Microstructure and Properties of Nickel-based C276 Alloy Coatings by PTA on AISI 316L and API 5L X70 Steel Substrates

ABSTRACTAISI 316L stainless steel substrates were coated with hydroxyapatite [HAp, Ca10(PO4)6(OH)2]-seeded 58S bioglass, and then their in vitro bioactivity was evaluated by soaking in a simulated body fluid (SBF). The bioglass was prepared via the sol-gel technique and nanometric HAp single crystals were obtained by hydrothermal synthesis. The coatings had bioglass/HAp weight ratios of 100/0, 90/10 or 80/20. The in vitro bioactivity tests were carried out under static conditions at 37 °C and pH = 7.25, for time periods ranging from 1 to 21 days. The results showed that the HAp-seeding significantly accelerates the formation of a HAp layer at the bioglass-coated steel surface during the bioactivity tests.

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Impact of dilution on the microstructure and properties of Ni-based 625 alloy coatings

Soldagem & Inspeção ◽

10.1590/0104-9224/si1902.05 ◽

2014 ◽

Vol 19 (2) ◽

pp. 134-144 ◽

Cited By ~ 15

Author(s):

Tiago Jose Antoszczyszyn ◽

Rodrigo Metz Gabriel Paes ◽

Ana Sofia Clímaco Monteiro de Oliveira ◽

Adriano Scheid

Keyword(s):

Thermal Conductivity ◽

Steel Substrate ◽

Oil Refinery ◽

Alloy Sample ◽

Aisi 316L ◽

Properties Of Coatings ◽

Low Thermal Conductivity ◽

Microstructure And Properties ◽

Nickel Based Alloy ◽

The Impact

Nickel-based alloy IN 625 is used to protect components of aircrafts, power generation and oil refinery due to an association of toughness and high corrosion resistance. These properties are associated with the chemical composition and microstructure of coatings which depend on the processing parameters and the composition of the component being protected. This paper assessed impact of dilution on the microstructure and properties of the Ni alloy IN 625 deposited by Plasma Transferred Arc (PTA) on two substrates: carbon steel API 5L and stainless steel AISI 316L. Differences due to the interaction with the substrate were maximized analyzing single layer coatings, processed with three deposition current: 120, 150 and 180 A. Correlation with a cast Nickel-based alloy sample contributed to assess the impact of dilution on coatings. Dilution was determined by the area ratio and Vickers hardness measured on the transverse section of coatings. Scanning electron and Laser confocal microscopy and X-ray diffraction analysis were carried out to characterize the microstructure. Results indicated the increasing dilution with the deposition current was deeply influenced by the substrate. Dilution ranging from 5 to 29% was measured on coatings processed on the API 5L steel and from 22 to 51% on the low thermal conductivity AISI 316L steel substrate. Differences on the microstructure and properties of coatings can be associated with the interaction with each substrate. Higher fraction of carbides account for the higher coating hardness when processing on API 5L whereas the low thermal conductivity of AISI 316L and the higher Fe content in solid solution contributed to the lower hardness of coatings.

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Effect of H2 on the Microstructure and Properties of TiO2 Films Grown by Atmospheric Pressure MOCVD on Steel Substrates

ECS Transactions ◽

10.1149/1.3207598 ◽

2019 ◽

Vol 25 (8) ◽

pp. 249-256

Author(s):

Dan Duminica ◽

Francis Maury ◽

Rene Hausbrand

Keyword(s):

Atmospheric Pressure ◽

Tio2 Films ◽

Microstructure And Properties ◽

Steel Substrates

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Degradation of microstructure and properties of an AISI 316L steel pipe after more than 100,000 hours usage at 640°C in a petrochemical industry

Procedia Structural Integrity ◽

10.1016/j.prostr.2019.08.018 ◽

2019 ◽

Vol 17 ◽

pp. 131-137

Author(s):

Flavio Pereira de Moraes ◽

Sandro Francisco Alves ◽

Ronald Lesley Plaut ◽

Angelo Fernando Padilha

Keyword(s):

Petrochemical Industry ◽

Steel Pipe ◽

Aisi 316L ◽

Microstructure And Properties ◽

316L Steel

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Temperature-dependent surface modifications of AISI 316L and AISI 440C stainless steel substrates

Applied Surface Science ◽

10.1016/0169-4332(91)90076-v ◽

1991 ◽

Vol 52 (4) ◽

pp. 333-337 ◽

Cited By ~ 17

Author(s):

P. Gröning ◽

S. Nowak ◽

L. Schlapbach

Keyword(s):

Stainless Steel ◽

Surface Modifications ◽

Aisi 316L ◽

Temperature Dependent ◽

Steel Substrates

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Tribological studies of ZrO2‐implanted on stainless steel substrate

Industrial Lubrication and Tribology ◽

10.1108/00368790410558257 ◽

2004 ◽

Vol 56 (6) ◽

pp. 341-345 ◽

Cited By ~ 6

Author(s):

Halit Dogan ◽

Fehim Findik ◽

Ahmet Oztarhan

Keyword(s):

Stainless Steel ◽

Wear Resistance ◽

316L Stainless Steel ◽

Steel Substrate ◽

Surface Hardness ◽

Wear Volume ◽

Aisi 316L ◽

Aisi 316L Stainless Steel ◽

Oxygen Ions ◽

Steel Substrates

The tribological properties such as surface hardness, friction and wear have been studied for AISI 316L stainless steel substrates which were co‐ion implanted with zirconium and oxygen ions. It is found that the wear resistance for AISI 316L stainless steel substrates implanted with zirconium and oxygen ions increased quite a lot. It is concluded that the increase in surface microhardness and the decrease in friction coefficient of AISI 316L stainless steel substrates play an important role in improving the wear resistance, and the relationship between relative wear volume and microhardness is correlated for zirconium and oxygen co‐ion implantation.

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