کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8001239 | 1516283 | 2014 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of the irradiation temperature on the surface structure and physical/chemical properties of Ar ion-irradiated bulk metallic glasses
ترجمه فارسی عنوان
تأثیر درجه حرارت تابش بر روی ساختار سطح و خواص فیزیکی / شیمیایی عینک های فلزی عصبی آ یون
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کلمات کلیدی
اشعه یون شیشه ای فلزی، نانوکریستالیزاسیون، سختی مقاومت در برابر خوردگی، رطوبت
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
Surface treatments using multiple Ar ion irradiation processes with a maximum energy and fluence of 200Â keV and 1Â ÃÂ 1016Â ions/cm2, respectively, have been performed on two different metallic glasses: Zr55Cu28Al10Ni7 and Ti40Zr10Cu38Pd12. Analogous irradiation procedures have been carried out at room temperature (RT) and at TÂ =Â 620Â K (â0.9Â Tg, where Tg denotes the glass transition). The structure, mechanical behavior, wettability and corrosion resistance of the irradiated alloys have been compared with the properties of the as-cast and annealed (TÂ =Â 620Â K) non-irradiated specimens. While ion irradiation at RT does not significantly alter the amorphous structure of the alloys, ion irradiation close to Tg promotes decomposition/nanocrystallization. Consequently, the hardness (H) and reduced Young's modulus (Er) decrease after irradiation at RT but they both increase after irradiation at 620Â K. While annealing close to Tg increases the hydrophobicity of the samples, irradiation induces virtually no changes in the contact angle when comparing with the as-cast state. Concerning the corrosion resistance, although not much effect is found after irradiation at RT, an improvement is observed after irradiation at 620Â K, particularly for the Ti-based alloy. These results are of practical interest in order to engineer appropriate surface treatments based on ion irradiation, aimed at specific functional applications of bulk metallic glasses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 610, 15 October 2014, Pages 118-125
Journal: Journal of Alloys and Compounds - Volume 610, 15 October 2014, Pages 118-125
نویسندگان
E. Menéndez, A. Hynowska, J. Fornell, S. Suriñach, J. Montserrat, K. Temst, A. Vantomme, M.D. Baró, E. GarcÃa-Lecina, E. Pellicer, J. Sort,