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):

Report Date:

1987-12-01

Pagination or Media Count:

57.0

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 wattsq 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.

Subject Categories:

  • Lasers and Masers
  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE