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
      Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE