TY  - JOUR
TI  - Investigation of the friction and wear properties of nitrided 7075-T6
aluminum alloy under vacuum and ambient air
AB  - Al7075 alloy is commonly used in the automotive industry, components
of military vehicles and aircraft, rubber and plastic moulds. Also, similar
Al alloys are frequently used for mechanical parts in space exploration.
Therefore, investigation of the wear properties under a vacuum
environment is as indispensable as wear properties under an
atmosphere. However, the wear performance of this alloy cannot meet
the expectations. This paper reports the investigation of the obtained
wear properties of Al7075-T6 alloy after plasma nitriding in ambient
air and vacuum environments. The surface characterization and phase
analysis of the formed AlN layers are determined by scanning electron
microscope, energy dispersive X-ray spectrometer, 3D optical
profilometer and X-ray diffractometer. The hardness of the nitride layer
is established using Vickers micro-hardness tester. The wear
performance of the untreated and nitride sample is investigated under
1N constant load at ambient air and vacuum environment. As a result
of wear tests, the best wear performance of both conditions has been
obtained from nitrided samples. The AlN layer (0.19) is observed to
notably reduced the coefficient of friction of the substrate (0.60) under
ambient air. Besides, it is observed that the nitride layer is better in
ambient air (0.00010 mm3/Nm) than in vacuum environment (0.00087
mm3/Nm) in term of wear rate. In fact, the wear track on the nitrided
sample is very thin under ambient air, and nearly imperceptible.
AU  - Küçükömeroğlu, Tevfik
AU  - ASL, Hojjat GHAHRAMANZADEH
AU  - BAYRAK, Özgü
AU  - SERT, Yaşar
DO  - 10.5505/pajes.2021.83903
PY  - 2022
JO  - Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi
VL  - 28
IS  - 1
SN  - 2147-5881
SP  - 63
EP  - 71
DB  - TRDizin
UR  - http://search/yayin/detay/520112
ER  -