SİNTERLENMİŞ W-VC-C KOMPOZİTLERİN MİKROYAPISAL KARAKTERİZASYONU VE 1 M H2SO4 SULU ÇÖZELTİSİ İÇERİSİNDEKİ ELEKTROKİMYASAL DAVRANIŞLARI
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
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.
Keywords:
Mechanical alloying, W matrix composites, VC, Corrosion, Polarization,
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- Başlangıç: 2009
- Yayıncı: E-Journal of New World Sciences Academy