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Porous Metal Sheets of NiTi made by Wet Powder Spraying
Author(s) -
Schüller E.,
Krone L.,
Bram M.,
Buchkremer H. P.,
Stöver D.
Publication year - 2004
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.200400751
Subject(s) - materials science , nickel titanium , porosity , differential scanning calorimetry , sintering , microstructure , metallurgy , phase (matter) , particle size , powder metallurgy , composite material , chemical engineering , shape memory alloy , chemistry , physics , thermodynamics , organic chemistry , engineering
As a promising method to produce thin porous NiTi sheets, Wet Powder Spraying (WPS) is applied for NiTi powders. Layers with a thickness of 150 μm are obtained from pre‐alloyed NiTi powders with a particle size of < 12 μm. Optimized process control for spraying and sintering was used. Microstructure and phase formation is characterized. The sheets with a porosity of 15 % show a high pseudoelastic flexibility at room temperature. Phase transformation temperatures are determined by Differential scanning calorimetry (DSC). The one way effect could be demonstrated.