한국표면공학회지 (Journal of the Korean institute of surface engineering)
- 제31권3호
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- Pages.157-164
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- 1998
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- 1225-8024(pISSN)
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- 2288-8403(eISSN)
TiAl 금속간화헙물의 공식거동에 미치는 합금원소의 영향
Effects of Alloying Elements on the Pitting Behavior of Ti-Al Intermetallic Compounds
초록
Effects of alloying elements on the pitting behavior of Ti-Al intermetalic compounds in the electrolytic soution containing Cl- were investigated through electrochemical tets and corrosion morphologies. Corrosion potential increased in the case of Cr addition to Ti-48%Al, whereas it decreased in the case of Si and B addition. The simultaneous addition of Cr and Si increased passive current density and decrosion corrosion potential. The passive current density of N addtion was higher than that of B addition in H2SO4 solution. With the addition of alloying elements, The pitting resistance decreased in order of TiAl>TiAlSi>TiAlN>TiAlB>TiAlCr and whin siumultaneous addition, it decreased in order of TiAlCrSi>TiAlCrBN>TiAlCrrN. The surface merohology after pitting test showed that the TiAl coataining Si had for fewer pits than that containing Cr and N simultaneously.
키워드