Accession Number:

ADA305558

Title:

Adhesion between Polymers and Evaporated Gold and Nickel Films.

Descriptive Note:

Technical paper,

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Report Date:

1984-08-01

Pagination or Media Count:

11.0

Abstract:

To obtain information on the adhesion between metal films and polymeric solids, the adhesion force was measured by means of a tensile pull test. It was found that the adhesion strengths between polymeric solids and gold films evaporated on polymer substrates were 1.11 or - 0.53x10exp 6 Nsq m on PTFE, about 5.49x10exp 6 Nsq m on UHMWPE, and 6.54 x 10exp 6 Nsq m on 66 nylon. The adhesion strengths for nickel films evaporated on PTFE, UHMWPE, and 66 nylon were found to be a factor of 1.7 higher than those for the gold-coated PTFE, UHMWPE, and 66 nylon. To confirm quantitatively the effect of electron irradiation on the adhesion strength between a PTFE solid and metal films, a tensile pull test was performed on the irradiated PTFE specimens, which were prepared by evaporating nickel or gold on PTFE surfaces irradiated by 2-keV electrons for various times. After irradiation, the adhesion strength increased to 4.92 or - 0.92 x 10exp 6Nsq m for nickel-coated PTFE and 1.82 or - 0.48 x 10exp 6Nsq m for gold-coated PTFE. The improvement in adhesion for nickel is higher than that for gold. jg p3

Subject Categories:

  • Polymer Chemistry
  • Inorganic Chemistry
  • Ceramics, Refractories and Glass
  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE