학술논문
Acid corrosion behaviour of Ti–48Al–6Nb porous alloys with different phase skeletons.
Document Type
Article
Author
Source
Subject
*AMALGAMATION
*MICROALLOYING
*POWDER metallurgy
*FRACTURE mechanics
*CHEMISTRY
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Language
ISSN
1478-422X
Abstract
Ti–48Al–6Nb porous alloys with different phase skeletons were synthesised by powder metallurgy at different temperatures. TiAl3skeletons achieved at 700°C were covered by corrosion products and skeletons fractures led to pores collapse. TiAl skeletons were synthesised at 900°C with obvious corrosion pits and pore diameter increasing. And Ti3Al/TiAl skeletons achieved at 1350°C exhibit the best acid corrosion resistance with the least mass loss of 1.853 mg m–2. Skeletons and pore diameters remained stable just with fully lamellar structures emerged. In addition, Nb2Al phases presented better resistance than NbAl3in the skeletons contributing to acid corrosion resistance of the porous alloys. [ABSTRACT FROM AUTHOR]