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Corrosion Protection of Mg‐Li Alloy by Plasma Thermal Spraying of Aluminum
Author(s) -
Tsujikawa Masato,
Adachi Shinichiro,
Abe Yukiko,
Oki Sachio,
Nakata Kazuhiro,
Kamita Masaichiro
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.200731413
Subject(s) - materials science , corrosion , metallurgy , aluminium , alloy , coating , thermal spraying , gas dynamic cold spray , plasma , salt spray test , thermal shock , composite material , physics , quantum mechanics
Magnesium alloys containing lithium over 10 mass‐% have good cold workability and high specific strength. However, the poor corrosion resistance of these alloys hinders their application. In this experiment, the effect on corrosion resistance of plasma thermal sprayed pure aluminum coating to Mg‐Li alloy plates was investigated. Low‐pressure plasma sprayings of pure aluminum were carried out after grit blasting. The corrosion resistance, which is evaluated by salt water spraying test, of plasma sprayed plates was improved. Furthermore, slightly cold‐rolled surface after thermal spraying showed excellent corrosion resistance, due to closing of micro channels from surface to substrate.