Surface modification of multiwalled carbon nanotubes for metal matrix nanocomposite application

مقدم أطروحة جامعية

Namus, Righdan Muhsin

مشرف أطروحة جامعية

Musa, Ahmad Ali
Faysal, Abd al-Qadir

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم هندسة الإنتاج و المعادن

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2012

الملخص الإنجليزي

The as received multiwalled carbon nanotubes were first functionalized using two steps functionalization process.

In the first step MWCNTs were sonicated in a mixed solution of concentrated (HNO3 +H2SO4)(1:3 volume ratio) at room temperature for 30 min.

The second step involved sonication in H2O2 (30%) at room temperature for 30 min.

The functionalized MWCNTs are named (FMWCNTs).

The functionalized MWCNTs are sensitized in Sn+2 ions solution and activated by Pd+2 ions solution then coated using electroless copper plating method.

The copper coated MWCNTs are named (CMWCNTs).

Cylindrical samples of copper matrix nanocomposite were used.

Three different groups of samples with (0.1, 0.5, 1, 2, 3 wt% MWCNTs) were prepared by means of powder technology.

The first group contains multiwalled carbon nanotubes as received (Cu/MWCNTs), second group contains functionalized multiwalled carbon nanotubes (Cu/FMWCNTs) while the third group contains coated multiwalled carbon nanotubes (Cu/CMWCNTs).

The results showed that MWCNTs can remarkably improve the mechanical properties (hardness and wear resistance) for copper metal.

The best results achieved at Cu/2 wt% CMWCNTs nanocomposites which are about 2.7 times higher in hardness and 3.5 times higher in wear resistance than that for pure copper metal.

The enhancement of mechanical properties is due to the effect of homogeneous distribution of MWCNTs in Cu matrix and good adhesion between MWCNTs and the matrix.

FTIR, XRD and SEM were used to characterize copper/multiwalled carbon nanotubes nanocomposites.

التخصصات الرئيسية

العلوم الهندسية والتكنولوجية (متداخلة التخصصات)

الموضوعات

• الكربون

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-419416