ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Ti45Zr38Ni17 powders were thermally sprayed onto mild steel substrates in air and undera reduced pressure of argon. Two kinds of powder samples were used in this study. For one typethe elemental powders were gently (manually) mixed in a vial, and for the other type they weremechanically alloyed by a planetary ball mill. Several kinds of oxides were formed afterthermally-spraying the mechanically-alloyed powders in air. After spraying in a reduced pressureof argon, on the other hand, the coating layers obtained from the gently mixed powders consisted ofthe three elemental metals (Ti, Zr, Ni), but an amorphous phase primarily appeared in the thermallysprayedmechanically-alloyed powders. This amorphous phase transformed into the icosahedralquasicrystal phase and a minor Ti2Ni-type crystal phase after annealing in vacuum at 828 K. TheVickers hardness and the contact angle with pure water for the quasicrystal layers were about 7 GPaand 92˚ respectively
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.449.pdf
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