Adhesion between Polymers and Evaporated Gold and Nickel Films.
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
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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
- Polymer Chemistry
- Inorganic Chemistry
- Ceramics, Refractories and Glass
- Coatings, Colorants and Finishes