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Formation and Corrosion Properties of Mg‐Ti Alloys Prepared by Physical Vapour Deposition
Author(s) -
Bohne Yvonne,
Blawert Carsten,
Dietzel Wolfgang,
Mändl Stephan
Publication year - 2007
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200731410
Subject(s) - materials science , corrosion , microcrystalline , metallurgy , cathodic protection , deposition (geology) , precipitation , supersaturation , alloy , aluminium , titanium , phase (matter) , magnesium , chemical engineering , electrochemistry , chemistry , electrode , paleontology , physics , organic chemistry , sediment , meteorology , engineering , biology , crystallography
PVD techniques can contribute to produce supersaturated precipitation free and microcrystalline magnesium layers. IBSD results in a MgTi26 alloy (Ti content in wt.‐%) synthesized with Ti still in solid solution while a phase segregation was observed for MgTi59. In contrast, increasing the average particle energy during the deposition by supplying the Ti from a cathodic arc leads to a single phase MgTi63 compound. Corrosion potentials between −875 and −490 mV and corrosion rates between 200 and 2 µm · year −1 were observed with increasing titanium content. Addition of aluminium could further improve the corrosion resistance.