Friction Behavior of TiAlN, AlTiN and AlCrN Multilayer Coatings at Nanoscale

Bu çalışmada H13 çeliği üzerine fiziksel buharlaştırma yöntemi ile 3.5 mikron kalınlığa sahip çok katmanlı TiAlN, AlTiN ve AlCrN kaplamalar yapılmıştır. Kaplamaların sürtünme karakteristikleri sürtünme kuvveti mikroskopisi ile nano mertebede literatürde ilk kez araştırılmıştır. Sürtünme kuvveti ölçümleri değişen yükler altında atomic kuvvet mikroskopunun yatay kuvvet modunda gerçekleştirilmiştir. Sonuçlar AlTiN kaplamasının diğer kaplamalara göre düşük yüzey enerjisi nedeni ile üç kat daha az sürtünme katsayısına sahip olduğunu göstermiştir. Bu çalışmada Amonton yasasının nano mertebede sürtünme katsayısını bulmada geçerli olduğu gözlemlenmiştir.

Anahtar Kelimeler:

Amonton Yasasi, Elastik Modulü, Fiziksel Buharlaştirma ile Biriktirme, Sürtünme Kuvveti Mikroskopisi, Yüzey Enerjisi

Friction Behavior of TiAlN, AlTiN and AlCrN Multilayer Coatings at Nanoscale

In this study, 3.5 μm thick TiAlN, AlTiN, and AlCrN multilayer coatings were deposited on the H13 steel surface by physical vapor deposition (PVD) method. Friction behavior of these coatings was investigated by friction force microscopy for the first time at nanoscale in the literature. Friction force measurements were performed with the atomic force microscopy lateral force mode at various loads. Results showed that the AlTiN coating had three times lower COF value than the TiAlN and AlCrN coatings due to the lower surface energy. It was observed in this study that Amonton’s law was valid for the COF evolution at the nanoscale.

Keywords:

Amonton’s Law, Elastic Modulus, Friction Force Microscopy, Physical Vapor Deposition (Pvd), Surface Energy,

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