Designing energy dissipation properties via thermal spray coatings

Journal Article · Wed Dec 14 00:00:00 EST 2016 · Surface and Coatings Technology

DOI:https://doi.org/10.1016/j.surfcoat.2016.12.034· OSTI ID:1340267

Brake, Matthew R. W. ^[1]; Hall, Aaron Christopher ^[2]; Madison, Jonathan D. ^[2]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); William Marsh Rice Univ., Houston, TX (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The coefficient of restitution is a measure of energy dissipation in a system across impact events. Often, the dissipative qualities of a pair of impacting components are neglected during the design phase. This research looks at the effect of applying a thin layer of metallic coating, using thermal spray technologies, to significantly alter the dissipative properties of a system. We studied the dissipative properties across multiple impacts in order to assess the effects of work hardening, the change in microstructure, and the change in surface topography. The results of the experiments indicate that any work hardening-like effects are likely attributable to the crushing of asperities, and the permanent changes in the dissipative properties of the system, as measured by the coefficient of restitution, are attributable to the microstructure formed by the thermal spray coating. Furthermore, the microstructure appears to be robust across impact events of moderate energy levels, exhibiting negligible changes across multiple impact events.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1340267
• Report Number(s): SAND--2016-12698J; 649977
• Journal Information: Surface and Coatings Technology, Journal Name: Surface and Coatings Technology Journal Issue: C Vol. 310; ISSN 0257-8972
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Coefficient of restitution
Contact
Impact
Microstructure
Thermal spray coatings