Open AccessExperimental Assessment of PTFE Post-Arc Ablation
Author(s) -
Yacine Babou,
Pierre Corfdir,
Ralf-Patrick Suetterlin
Publication year - 2019
Publication title -
plasma physics and technology
Language(s) - English
Resource type - Journals
eISSN - 2336-2634
pISSN - 2336-2626
DOI - 10.14311/ppt.2019.2.148
Subject(s) - pyrometer , shadowgraph , materials science , ablation , current (fluid) , arc (geometry) , range (aeronautics) , polytetrafluoroethylene , analytical chemistry (journal) , optics , temperature measurement , composite material , electrical engineering , chemistry , mechanical engineering , aerospace engineering , physics , engineering , chromatography , quantum mechanics
The study addresses the post arc ablation (PAA) of PTFE (Polytetrafluoroethylene) material after being stressed by high current arcs. Arcs were generated in ambient air applying AC or DC current profiles to reach energy input in the range 7-22 kJ. The characterization has been performed essentially based on standard optical measurement techniques. The shadowgraph technique enabled us to show that the PAA flow is composed by a significant amount of carbonaceous soots lasting for several dozens of milliseconds after current interruption. The pyrometry technique allowed to estimate the soots temperature in the range 1400-2200 K.