TY - JOUR
T1 - Microstructural evolution and tribocorrosion performance of novel laser clad ti-ni-zro2 composite coatings in 3.5% nacl solution
AU - Obadele, Babatunde A.
AU - Ige, Oladeji O.
AU - Olubambi, Peter A.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The triboelectrochemical properties of TiNi and TiNi doped with ZrO2 laser clad coatings onto Ti6Al4V substrates have been investigated in 3.5% NaCl using potentiodynamic polarisation techniques. Laser cladding was achieved using a 2 kW Rofin Sinar continuous wave ytterbium laser system (YLS) at a scan speed of 0.0067 m/s. Microstructural analyses of the coatings revealed a strong metallurgical bond at the coatings-substrate interface with the absence of pores and cracks. There was a significant increase in surface microindentation hardness values of the cladded layers. Addition of ZrO2 improved the tribocorrosion property of the composite coatings. Ti-Ni-5ZrO2 had the lowest corrosion current density whilst TiNi10ZrO2 had the lowest tribocorrosion current density in investigated electrolyte.
AB - The triboelectrochemical properties of TiNi and TiNi doped with ZrO2 laser clad coatings onto Ti6Al4V substrates have been investigated in 3.5% NaCl using potentiodynamic polarisation techniques. Laser cladding was achieved using a 2 kW Rofin Sinar continuous wave ytterbium laser system (YLS) at a scan speed of 0.0067 m/s. Microstructural analyses of the coatings revealed a strong metallurgical bond at the coatings-substrate interface with the absence of pores and cracks. There was a significant increase in surface microindentation hardness values of the cladded layers. Addition of ZrO2 improved the tribocorrosion property of the composite coatings. Ti-Ni-5ZrO2 had the lowest corrosion current density whilst TiNi10ZrO2 had the lowest tribocorrosion current density in investigated electrolyte.
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U2 - 10.1002/9781119423829.ch31
DO - 10.1002/9781119423829.ch31
M3 - Article
AN - SCOPUS:85055431455
SN - 1042-1122
VL - 261
SP - 353
EP - 363
JO - Ceramic Transactions
JF - Ceramic Transactions
ER -