Treatment of High-Altitude Brushes by Application of Metallic Halides
- 1 August 1945
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 64 (8) , 576-579
- https://doi.org/10.1109/T-AIEE.1945.5059178
Abstract
It has been found that the rapid wear of brushes under high-altitude conditions can be prevented by the treatment of the brushes with a suitable metallic halide. Carbon, electrographitic, and metal-graphite brush grades all respond to such treatments. A great many nondeliquescent metallic iodides, bromides, chlorides, and fluorides have been tested and found to prevent brush dusting on the heavy-duty electric units of aircraft. These treatments also have been applied with considerable success to earthsurface machines operating under severe commutating conditions. A mechanism by which this class of chemical compound may react to maintain a satisfactory low-friction film on a commutator is proposed.Keywords
This publication has 1 reference indexed in Scilit:
- CCCI.—The formation of protective oxide films on copper and brass by exposure to air at various temperaturesJournal of the Chemical Society, 1926