SİNTERLENMİŞ W-VC-C KOMPOZİTLERİN MİKROYAPISAL KARAKTERİZASYONU VE 1 M H2SO4 SULU ÇÖZELTİSİ İÇERİSİNDEKİ ELEKTROKİMYASAL DAVRANIŞLARI

Yıl 2017, Cilt: 12 Sayı: 1, 9 - 15, 05.01.2017

Sultan Sönmez , Burak Dikici , Mustafa Lütfi Öveçoğlu

Öz

Bu çalışmada alaşımlama süresinin, tungsten (W)
matrisli kompozitin mikroyapısal ve korozyon özelikleri üzerine olan etkisi
incelenmiştir. Harmanlanan W-2wt.%VC-1wt.%C tozların mekanik alaşımlama işlemi
farklı alaşımlama süreleri  (1s, 3s, 6s, 12s and 24s) için, inert Argon
atmosferinde yüksek enerjili öğütücü (SpexMill) kullanılarak yapılmıştır.
Sinterlenen kompozitlerin karakterizasyon çalışmaları, taramalı elektron
mikroskobu (SEM) ve X-ışınları difraktometresi (XRD) kullanılarak yapılmıştır.
Korozyon testleri; değişik alaşımlama sürelerinin kompozitlerin korozyon
direncini belirlemek için, 1M H2SO4 sulu çözelti içerisinde yapılmıştır.

Anahtar Kelimeler

Mekanik alaşımlama, W matriksli kompozitler, VC, Korozyon, Polarizasyon

MICROSTRUCTURAL CHARACTERIZATIONS OF SINTERED W-VC-C COMPOSITES AND THEIR ELECTROCHEMICAL BEHAVIOURS IN 1 M H2SO4 AQUEOUS SOLUTIONS

Öz

The effects of alloying
duration on the microstructural and corrosion properties of Tungsten (W) matrix composites were investigated
in this study. As blended W-2VC-1C (wt.%) powders were mechanically alloyed
using a high energy ball mill at different milling times (1, 3, 6, 12 and 24 h)
under inert Argon. Characterization of the sintered composites carried out
using a scanning electron microscope (SEM) and X-ray diffractometer (XRD). Corrosion
tests were performed in aqueous 1 M H₂SO₄ solutions to
determine the effects of different alloying duration on the corrosion
resistance of the composites. 

Anahtar Kelimeler

Mechanical alloying, W matrix composites, VC, Corrosion, Polarization

Kaynakça

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