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Boride-Carbon Hybrid Technology for Ultra-Wear and Corrosive Conditions

Journal Article · · Coatings

This work discusses a study on a surface treatment for creating extremely durable low-friction, wear and corrosion-resistant surfaces for tribological components in harsh conditions. A duplex surface treatment was developed that combines the advantages of ultra-fast electrochemical boriding with those of hard tetrahedral amorphous carbon coatings. The friction and wear properties of the duplex treatment are compared to the boride-only treatment of AISI 1045 steel, while corrosion and contact fatigue behaviors of the duplex layer are compared to that of the single-layer carbon coating on low carbon steel. The duplex treatment yields wear rates as low as 6 × 10−8 mm3·N−1·m−1 and a coefficient of friction of 0.14 when tested against a steel counter face. The contact fatigue impact tests reveal that the high hardness of 1200 HV0.05 of the borided layer in the duplex treatment leads to higher resistance against indentation but is accompanied by a higher incidence of crack initiation, being in good agreement with the finite-element modeling of nanoindentation results. The duplex coatings exhibit resistance to pinhole corrosion as evidenced by a 3 h exposure to 15% HCl at room temperature.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Michigan State Univ., East Lansing, MI (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Advanced Manufacturing Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
Grant/Contract Number:
AC02-06CH11357; EE0008320
OSTI ID:
1778338
Alternate ID(s):
OSTI ID: 1834984
OSTI ID: 1840565
Journal Information:
Coatings, Journal Name: Coatings Journal Issue: 4 Vol. 11; ISSN 2079-6412; ISSN COATED
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English

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