Tribological and radiation shielding response of novel titanium-boron nitride coatings for lunar structural components

Abhijith Kunneparambil Sukumaran, Cheng Zhang, Sara Rengifo, Michael Renfro, Gia Garino, William Scott, Matthew Mazurkivich, Annette Gray, Gabriel Demengehi, Ellen Rabenberg, Martin Volz, Malik Thompson, Brandon Phillips, Nathan Jimenez, Felipe Mora, Calista Lum, Katie Stephens, Sang Hyon Chu, Cheol Park, Arvind Agarwal

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Aluminum (Al) and titanium (Ti) lightweight alloys play a crucial role in space systems due to their exceptional strength-to-weight ratio. However, their premature failure in the presence of lunar regolith and their lack of neutron shielding ability are significant challenges. To address these issues, we have developed air and vacuum plasma-sprayed hBN (hexagonal Boron Nitride) -reinforced titanium coatings with 2 and 10 vol% of hBN. Tribological studies conducted with JSC-1 A lunar regolith simulant revealed a 90 % reduction in wear volume for the Ti/2 vol% hBN coatings compared to conventional materials due to the synergistic action of harder secondary phases and solid lubrication effect of hBN. Additionally, a 27 % enhancement in radiation shielding is obtained based on the mass absorption coefficient (radiation absorbed per sample density and thickness) for VPS Ti/2 vol% hBN coatings.

Original languageEnglish
Article number130300
JournalSurface and Coatings Technology
Volume476
DOIs
StatePublished - Jan 30 2024

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

  • Boron nitride
  • Lunar simulant
  • Radiation shielding
  • Wear

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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