Accession Number : ADD014226

Title :   A Method of Soldering Aluminum.

Descriptive Note : Patent Application, Filed 29 Aug 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Divecha, A P ; Ferrando, W A ; Hesse, P ; Karmarkar, S

Report Date : 29 Aug 1989

Pagination or Media Count : 6

Abstract : This invention relates to methods of joining metal parts and more particularly to methods of soldering aluminum. Accordingly an object of this invention is to provide a new method of soldering aluminum and its alloy. Another object of this invention is to provide treated aluminum surfaces which can easily be soldered. These and other objects of this invention are accomplished by providing a process comprising: (1) wetting an aluminum or aluminum alloy surface with molten silver nitrate; (2) heating the AgNO3 coated aluminum surface at a temperature of from the decomposition temperature of AgNO3 to about 550 C to decompose the AgNO3 and form a Ag metal film. Patent applications. (JES)

Descriptors :   *ALUMINUM ALLOYS, ALUMINUM, JOINING, MELTS, METAL FILMS, METALS, NITRATES, PARTS, SILVER COMPOUNDS, SOLDERING, SURFACES, WETTING

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE