احمد نوزاد گلی کند

[ 1 ] - تشکیل الکتروشیمیایی فازهای هیدریدی در آلیاژ زیرکونیم-1% نیوبیم مورد استفاده در غلاف سوخت هسته‌ای

بررسی آثار مخرب تشکیل فازهای هیدریدی در غلاف‌های سوخت زیرکونیمی، مستلزم کار با مواد پرتوزا است. برای اجتناب از این کار، در این پژوهش، فازهای هیدرید زیرکونیم بر روی آلیاژ Zr-1%Nb (مورد استفاده در ساخت غلاف سوخت) به روش شارژ الکتروشیمیایی ایجاد شد. آزمایش در محلول 0.017 مولار NaCl و در دمای اتاق انجام شد. نمونه‌ها با استفاده از طیف‌سنجی تبدیل فوریه‌ی فروسرخ (FTIR)، پراش اشعه‌ی ایکس (XRD) و میکرو...

[ 2 ] - Hot tensile properties of 9Cr-2WVTa reduced-activation ferritic/martensitic steel

Reduced-activation ferritic/martensitic steels have been developed by replacing molybdenum by tungsten and niobium by tantalum in commercial elevated-temperature Cr–Mo steels to reduce half-life of radioactive isotopes. The objective of this study was to investigate tensile properties of a reduced-activation ferritic/martensitic steel (9Cr-2WVTa) in normalized-tempered (NT) and quenched-tempere...

[ 3 ] - Synthesis and characterization of Pt3Co bimetallic nanoparticles supported on MWCNT as an electrocatalyst for methanol oxidation

The impregnation method was used to synthesize Pt and Pt3Co supported on MWCNTs applying NaBH4 as the reducing agent. The structure, morphology, and chemical composition of the electrocatalysts were characterized through SEM, XRD, and EDX. X-ray diffraction showed a good crystallinity of the supported Pt nanoparticles on the composites and showed the formation of Pt3<...

[ 4 ] - Synthesis and characterization of Pt3Co bimetallic nanoparticles supported on MWCNT as an electrocatalyst for methanol oxidation

The impregnation method was used to synthesize Pt and Pt3Co supported on MWCNTs applying NaBH4 as the reducing agent. The structure, morphology, and chemical composition of the electrocatalysts were characterized through SEM, XRD, and EDX. X-ray diffraction showed a good crystallinity of the supported Pt nanoparticles on the composites and showed the formation of Pt3<...