Direct observation of the processes near particle-to-particle contacts at electric pulse consolidation of titanium powder | Zendy

А. С. Рогачев | Zendy; С. Г. Вадченко | Zendy; V.A. Kudryashov | Zendy; А. С. Щукин | Zendy; М. И. Алымов | Zendy

Open Access

Direct observation of the processes near particle-to-particle contacts at electric pulse consolidation of titanium powder

Author(s) -

А. С. Рогачев,

С. Г. Вадченко,

V.A. Kudryashov,

А. С. Щукин,

М. И. Алымов

Publication year - 2019

Publication title -

доклады академии наук

Language(s) - English

Resource type - Journals

ISSN - 0869-5652

DOI - 10.31857/s0869-56524885504-507

Subject(s) - overheating (electricity) , spark plasma sintering , materials science , electric field , consolidation (business) , sintering , titanium , electric current , powder metallurgy , composite material , plasma , metallurgy , electrical engineering , physics , quantum mechanics , accounting , business , engineering

Direct high-speed micro-video records prove the existence of highly overheated zones at the contacts of powder particles during short (~ 1 ms) electric current pulses. The value of overheating can exceed 1600 degrees and lead to the formation of liquid-phase sintering necks, the dimensions of which are well correlated with the size of the overheated zones. The micro-uniformity of the temperature field in the electric pulse heating allow understanding the unusually high consolidation rates of powder materials observed in spark plasma sintering.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research