The role of the thickness on the tribological properties of FeAlCr intermetallic alloy thin films deposited on austenitic steel

The role of the thickness on the tribological properties of FeAlCr intermetallic alloy thin films deposited on austenitic steel

Austenitic stainless steel is used in several industrial branches due to its mechanical and thermal properties, and to its good corrosion resistance. With low cost and biocompatibility, it is used to manufacture prostheses and devices for bone fixation. However, direct contact with body fluids may c...

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Bibliographic Details
Published in:Journal of materials research Vol. 35; no. 23-24; pp. 3192 - 3201
Main Authors: Gonçalves, Rodolfo L.P., Cardoso, Katia R., Miyakawa, Walter, Almeida, Gisele F.C., da Silva Sobrinho, Argemiro S., Massi, Marcos
Format: Journal Article
Language:English
Published: New York, USA Cambridge University Press 14-12-2020
Springer International Publishing
Springer Nature B.V
Springer
Subjects:
Alloys
Applied and Technical Physics
Astrophysics
Atoms & subatomic particles
Austenitic stainless steels
Biocompatibility
Biomaterials
Body fluids
Corrosion resistance
Corrosion resistant alloys
Energy
Film thickness
Galvanic corrosion
Inorganic Chemistry
Intermetallic compounds
Magnetron sputtering
Materials Engineering
Materials research
Materials Science
Mechanical properties
Morphology
Nanotechnology
Physics
Prostheses
Service life
Structural Materials and Mechanical Properties
Substrates
Thermodynamic properties
Thin film coatings
Thin films
Transplants & implants
Tribology
steel
thin film
coating
biomaterial
sputtering
tribology
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Summary:Austenitic stainless steel is used in several industrial branches due to its mechanical and thermal properties, and to its good corrosion resistance. With low cost and biocompatibility, it is used to manufacture prostheses and devices for bone fixation. However, direct contact with body fluids may cause corrosion. Thin films of FeAlCr intermetallic alloy can be used to increase service life of prostheses and avoid replacement surgeries. The aim of this work was to cover the austenitic stainless steel to study the effect of target–substrate distance on the film characteristics. Coatings were performed using the magnetron sputtering technique with the substrate positioned at different distances from the target. The influence on film thickness, morphology, roughness, and adhesion to the substrate was investigated. The thin films of FeAlCr (160 nm thick deposited at 100 mm far from the substrate) were formed by smaller particles (11.2 nm long), densely packed (551,000 particles/mm2), with flat and regular appearance, and greater adherence to the substrate.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2020.313