Mechanical properties of plasma sprayed layers of NiAl10 and NiAl40 on AZ91 alloy

0489878 - ÚFP 2020 RIV CZ eng C - Conference Paper (international conference)
Kubatík, Tomáš František - Brodil, R. - Ctibor, Pavel - Průša, F. - Brožek, Vlastimil
Mechanical properties of plasma sprayed layers of NiAl10 and NiAl40 on AZ91 alloy.
METAL 2017 - 26th International Conference on Metallurgy and Materials, Conference Proceedings. Ostrava: TANGER Ltd, 2017, s. 1658-1663. ISBN 978-80-87294-79-6.
[METAL 2017: International Conference on Metallurgy and Materials /26./. Brno (CZ), 24.05.2017-26.05.2017]
R&D Projects: GA ČR(CZ) GP14-31538P
Institutional support: RVO:61389021
Keywords : Adhesion strength * Nickel alloys * Plasma spraying * Wear resistance
OECD category: Materials engineering

In this work, plasma coatings of NiAl10 and NiAl40 on magnesium alloy AZ91 substrate were prepared by the hybrid plasma spraying system WSP®-H 500. The both plasma sprayed coatings of NiAl10 and NiAl40 have metallurgical bond. The thicknesses of microstructures in the cross-section of NiAl10 and NiAl40 plasma sprayed coatings prepared by 9 passes were 374 and 440 μm respectively. Adhesion test of plasma sprayed layers was performed using a modified ASTM C 633 standard. The tensile adhesion strength values are 24.7 MPa for NiAl10 coatings and 12.3 MPa for NiAl40 coatings. Abrasion resistance according to Slurry Abrasion Response (SAR) test of NiAl40 layers had similar values (0.12 g/cm2)in a comparison with the uncoated AZ91 (0.126 g/cm2). Layers NiAl10 had greater weight losses (0.175 g/cm2) than uncoated AZ91. Microhardness of plasma coating of NiAl40 is several times greater than microhardnesses of plasma coating of NiAl10 and uncoated substrate AZ91
Permanent Link: http://hdl.handle.net/11104/0284207