کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
617832 1455005 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental study of a potential weakening effect in spheres with thin hard coatings
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Experimental study of a potential weakening effect in spheres with thin hard coatings
چکیده انگلیسی

A potential weakening effect caused by very thin hard coatings on spherical substrates is investigated experimentally. This weakening effect reduces the resistance of the coated system to onset of plasticity. Half-coated spheres are prepared using an ion beam assisted deposition system. The coated and uncoated portions of these half-coated spheres are loaded by a rigid flat into their elastic–plastic regime of deformation and then unloaded. The resulting maximum interference after loading and residual interference at the completion of unloading are measured and used in an elastic–plastic loading index model to evaluate the plasticity levels of both the uncoated and coated portions on each sphere. The experimental results validate qualitatively the potential weakening effect, which was predicted theoretically in previous publications.


► Half-coated spheres were experimentally subjected to elastic–plastic loading–unloading.
► Higher plasticity levels of the coated portions compared to the uncoated ones were found.
► This validates previous prediction of weakening effect of thin hard coatings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 296, Issues 1–2, 30 August 2012, Pages 590–597
نویسندگان
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