原子状酸素を照射したPEEK膜材の機械特性

概要

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We irradiated 5 eV Atomic Oxygen (AO) to PEEK sheets with 0.4mm thickness under tensile load, and estimated strength of the specimen. Three phenomena caused by exposure were observed: (1) appearance of numerous conical pits a few μm deep on the specimen surface; (2) reduction of thickness at the irradiated area; (3) change of chemical structure on the surface, which is probably caused by UV generated slightly during the AO irradiation test. As a result of tensile tests, tensile properties after AO irradiation were almost same as those of pristine samples regardless of applied stress. The depth of conical pits was so small and the thickness of layer changed after AO irradiation test was so thin that they did not affect mechanical properties of PEEK sheets. Consequently, residual strength of this material after AO exposure can be estimated by consideration of thickness decrease.
社団法人日本機械学会の論文
2005-10-25