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Oct 11, 2026 4 min

Lubricating Copper Contacts

from Professor Alex Volinsky

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode! Episode 154 of the Professor Alex Volinsky podcast. Copper reinforced with carbon nanotubes and alumina nanoparticles by powder metallurgy: particles at grain boundaries refined grains to ~4 µm and raised hardness and strength over pure copper. Best: Cu-1.5CNTs-0.5Al2O3 at 131 HV, 345 MPa, friction 0.155, wear 3.7×10⁻¹⁴ m³/N·m — alumina carries wear, nanotubes lubricate. Based on the paper: Tribological and Mechanical Properties of Copper Matrix Composites Reinforced with Carbon Nanotube and Alumina Nanoparticles; Y. Pan, X. Lu, A.A. Volinsky, B. Liu, S. Xiao, C. Zhou, Y. Li, M. Chen, X. Qu; Materials Research Express, 2019, Vol. 6, article 116524. Hosts Elena and Marcus. AI-generated voices.

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Lubricating Copper Contacts

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