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

Personal Author(s) : Yamada, Yoshinori ; Wheeler, Donald R. ; Buckley, Donald H.

PDF Url : ADA305558

Report Date : AUG 1984

Pagination or Media Count : 11

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 - 0.53)x10(exp 6) N/sq m on PTFE, about 5.49x10(exp 6) N/sq m on UHMWPE, and 6.54 x 10(exp 6) N/sq m on 6/6 nylon. The adhesion strengths for nickel films evaporated on PTFE, UHMWPE, and 6/6 nylon were found to be a factor of 1.7 higher than those for the gold-coated PTFE, UHMWPE, and 6/6 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 10(exp 6)N/sq m for nickel-coated PTFE and (1.82 + or - 0.48) x 10(exp 6)N/sq m for gold-coated PTFE. The improvement in adhesion for nickel is higher than that for gold. jg p3

Descriptors :   *POLYMERS, *ADHESION, *METAL FILMS, *NICKEL, *EVAPORATION, *GOLD, REPRINTS, NYLON, FILMS, SUBSTRATES, SOLIDS, SURFACES, COATINGS, STRENGTH(GENERAL), IRRADIATION, ELECTRON IRRADIATION, TENSILE TESTERS, PULL TESTS, POLYETHYLENE.

Subject Categories : Polymer Chemistry
      Inorganic Chemistry
      Ceramics, Refractories and Glass
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE