Composite decoppering additive for a propellant

Details Composite decoppering additive for a propellant Composite decoppering additive for a propellant

1994-12-16

1996-10-15

Nelson, Peter A.

Ammunition and explosives

Powder form

Having embedded reinforcing or burning control means

102435, 102511, 42 7601, 42 7602, C06D 506, F41A 2100

Patent

active

055656439

ABSTRACT:
There is provided a decoppering agent that is added to a propellant charge to remove copper from the rifling of the internal bore of a gun barrel. The decoppering agent consists essentially of a lead-free pulverized additive dispersed in a combustible binder. One suitable decoppering agent is pulverized bismuth metal, dispersed in a nitrocellulose binder. The bismuth metal either vaporizes or liquifies when the propellant charge is ignited and either embrittles or dissolves the copper deposits facilitating removal.

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Vezzoli et al., "Materials for De-Coppering Erosion-Resistant Gun Tubes" (publication date to be provided).
Robertson, "Decoppering of Gun Tubes by Lead" (publication date to be provided).

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