Synthesis and characterization of metal coating carbon nanotube

مقدم أطروحة جامعية

Sallum, Riyad Faruq

مشرف أطروحة جامعية

Musa, Ahmad Ali
Muhammad, Muhammad I.

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم هندسة الإنتاج و المعادن

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2011

الملخص الإنجليزي

-In this work, Carbon Nanotubes (MWCNTs) were synthesized by Chemical vapor deposition (CVD) method using two different catalysts (Fe nanoparticles) and (Ni nanoparticles) for two different substrates: quartz and alumina.

acetylene gas was used as a carbon source and argon as a carrier gas at different temperatures and during different times to study the effects of these parameters on CNTs yield.

The yield of CNTs using Ni nanoparticles as catalyst is higher than that of using Fe nanoparticles as catalyst.

The produced MWCNTs by CVD method were then purified by oxidation followed by chemical method involving treatment of MWCNTs with concentrated acids (H2SO4 and HNO3)to remove impurities like amorphous carbon and metal catalyst particles.

The purified MWCNTs were then examined by X-Ray Diffraction (XRD).

SEM of purified CNTs shows that the purification has removed the impurities.

The MWCNTs were then functionalized by acidic treatment to createmore nucleation sites for subsequent metal deposition.

The Functionalized MWCNTs were examined by FTIR.

The functionalized MWCNTs were then coated with Nickel using electroless plating method in order to improve the wettability between MWCNTs and metal matrix.

SEM images show that the as prepared CNTs have different diameters ranging from (30 – 50) nm.

The coated CNTs have diameters ranging from 65-85nm.

Theuncoated and coated CNTs were characterized using Atomic Force Microscopy (AFM).

Metal matrix composites (MMCs) were prepared using Al/uncoated CNTs and Al/coated CNTs.

The hardnessof Al/coated CNTs composites is higher than that of Al/uncoated MWCNTs composites.

التخصصات الرئيسية

الكيمياء

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305175