Accession Number : ADA193786
Title : Laser and Electrochemical Studies of Metallizations in Electronic Devices.
Descriptive Note : Annual research rept. no. 2, 1 Sep 86-31 Aug 87,
Corporate Author : ISRAEL INST OF METALS HAIFA
Personal Author(s) : Zahavi, J ; Rotel, M ; Dobbs, B
PDF Url : ADA193786
Report Date : Dec 1987
Pagination or Media Count : 57
Abstract : The research during this year was concerned with application of excimer laser (193nm, 24 nsec, 10 to the 6th power - 10 to the 7th power watt/sq cm pulse) to Pb-Sn surfaces. The laser induced melting of the Pb-Sn coating resulted in bright area in which lead-rich zone were observed. Perferential dissolution of lead was observed during electrochemical potentiodynamic polarization of both the as -deposited and laser treated surfaces. Calculation showed that the laser-treated specimen had higher corrosion rates than as-deposited counter-parts. Keywords: Laser treatment; Pb-Sn coating, Corrosion, and Potentiodynamic polarization.
Descriptors : *EXCIMERS, *LASERS, *LEAD(METAL), *TIN, BRIGHTNESS, CORROSION, ELECTROCHEMISTRY, ELECTRONIC EQUIPMENT, HIGH RATE, LASER APPLICATIONS, MELTING, METALLIZING, PULSES
Subject Categories : Lasers and Masers
Distribution Statement : APPROVED FOR PUBLIC RELEASE