STEEL STRUCTURES

Abstract

Experimental results are analyzed on the initiation of lead azide, PbN6, by an electrical field, the role of the stress-strain state in the change in responsiveness to an electrical impulse, and the pyro- and piezoelectric properties detected for lead azide crystals. A method involving decoration , ie. with gold or silver chloride, followed by electron microscopy, which allowed analysis of the electrical surface relief of the crystal was applied. Results indicate that lead azide crystals are initiated comparatively easily, with the development of the domain structure, during mechanical impact because of the electrical breakdown in the strong field domains, ie. the avalanche-chemical effect mechanism is realized.