Journal
JOURNAL OF ADVANCED CERAMICS
Volume 2, Issue 4, Pages 313-317Publisher
SPRINGEROPEN
DOI: 10.1007/s40145-013-0077-6
Keywords
Ti3AlC2; Raman spectroscopy; alkaline corrosion; hot corrosion
Categories
Funding
- National Nature Science Foundation of China [51002045, 51205111]
- Program for Innovative Research Team of Henan Polytechnic University [T2013-4]
- Opening Project of Henan Key Discipline Open Laboratory of Mining Engineering Materials [MEM12-5]
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This paper investigated the corrosion behaviors of Ti3AlC2 at 700 degrees C in molten KOH with various mass ratios. If the mass ratio of KOH: Ti3AlC2 <= 2, Ti3AlC2 can resist KOH hot corrosion in 2 h. Ti3AlC2 suffered serious corrosion attack if the mass ratio >= 3. The main compositions of corroded samples were amorphous graphite and potassium titanates (K2O.nTiO(2)). If the samples were washed by acid and dried, potassium titanates could decompose to K2O and amorphous rutile. Based on the experimental results, a corrosion mechanism of Ti3AlC2 in molten KOH was proposed.
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