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Journals / Gümüşhane Üniversitesi Fen Bilimleri Dergisi / 2022 / Cilt: 12 - Sayı: 1

Investigation of corrosion behavior of magnesium matrix composite materials produced via uniaxial hot pressing technique

Tek eksenli sıcak presleme tekniği ile imal edilen magnezyum matrisli kompozit malzemelerin korozyon davranışlarının incelenmesi

Fevzi KELEN
Tarık AYDOĞMUŞ
Mehmet GAVGALI
Pages
34–41
Publication Date
2022-01-15
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In post-corrosion morphological investigations, filiform corrosion was observed besides pitting corrosion on the sample surfaces.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In the present study, corrosion tests of magnesium matrix composite materials containing 5-25% by volume TiNi produced by uniaxial hot pressing technique were carried out with potentiodynamic polarization (PDS) tests in 3.5% NaCl solution.
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Key Findings & Data:In potentiodynamic polarization analysis, corrosion potential values alongside corrosion current density values, depending on the reinforcement content, were significantly found to increase.
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Conclusion & Impact:In post-corrosion morphological investigations, filiform corrosion was observed besides pitting corrosion on the sample surfaces.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Hafif alaşım ve kompozitler · Korozyon · Magnezyum ve alaşımları

Abstract

In the present study, corrosion tests of magnesium matrix composite materials containing 5-25% by volume TiNi produced by uniaxial hot pressing technique were carried out with potentiodynamic polarization (PDS) tests in 3.5% NaCl solution. Corrosion potential (Ecor) and corrosion current density (ίcorr) values of composite specimens were specified by the use of the Tafel extrapolation method. Metallographic examinations have shown that the observed changes in microstructure are consistent with electrochemical values. In potentiodynamic polarization analysis, corrosion potential values alongside corrosion current density values, depending on the reinforcement content, were significantly found to increase. In post-corrosion morphological investigations, filiform corrosion was observed besides pitting corrosion on the sample surfaces.

Özet

Mevcut çalışmada, tek eksenli sıcak presleme tekniği ile üretilen %5-%25 hacimsel oranlarda TiNi içeren magnezyum matrisli kompozit malzemelerin korozyon deneyleri potansiyodinamik polarizasyon (PDS) testleri ile %3.5 NaCl çözeltisi içerisinde gerçekleştirilmiştir. Kompozit numunelerin korozyon potansiyeli (Ecor) ve korozyon akım yoğunluğu (ίcorr) değerleri Tafel ekstrapolasyonu metodu ile belirlenmiştir. Metalografik incelemeler mikroyapıda gözlemlenen değişimlerin elektrokimyasal değerler ile tutarlı olduğunu göstermiştir. Potansiyodinamik polarizasyon analizlerinde güçlendirici içeriğine bağlı olarak korozyon potansiyeli değerlerinin yanı sıra korozyon akım yoğunluğu değerlerininde önemli oranlarda arttığı saptanmıştır. Korozyon sonrası morfolojik incelemelerde numune yüzeylerinde çukurcuk korozyonu ile birlikte kurtçuk korozyonu da gözlenmiştir.

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Cite This Article

KELEN, F., AYDOĞMUŞ, T., GAVGALI, M. (2022). Investigation of corrosion behavior of magnesium matrix composite materials produced via uniaxial hot pressing technique. Gümüşhane Üniversitesi Fen Bilimleri Dergisi, Cilt: 12 - Sayı: 1, 34–41. https://ajindex.com/articles/668346

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