English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Arc erosion behaviors of TiB 2 /Cu composites with single-scale and dual-scale TiB 2  particles fabricated by powder metallurgy were studied. It was revealed that the dual-scale TiB 2 /Cu composites had fewer structure defects compared with the single-scale TiB 2 /Cu composites, and TiB 2  particles with different size were uniformly distributed in the copper matrix. When the ratio of 2 μm over 50 μm TiB 2  particles is 1:2, the density of TiB 2 /Cu composite is 98.5% and shows best mechanical and thermal properties. The arc duration and energy of TiB 2 /Cu composites increase with the increase of electric current in contact material testing. Compared with the single-scale TiB 2 /Cu composites, the arc erosion of dual-scale TiB 2 /Cu composite with 2 μm+50 μm (1:2) TiB 2  was slighter. The anode bulge area and cathode erosion pit of dual-scale TiB 2 /Cu composite was smaller. The dual-scale TiB 2  particles optimize the microstructure and thermal stability of the composite, which is conducive to alleviating arc erosion. The synergistic effect of different sized TiB 2  particles in the matrix improved the arc erosion resistance of TiB 2 /Cu composite during arcing.

Arc erosion behavior of TiB 2 /Cu composites with single-scale and dual-scale TiB 2 particles