Atmosferik basınçlı plazma uygulamasının metal malzeme yüzeylerinin ıslanabilirliği ve yaşlanma davranışı üzerindeki etkisi

Yıl 2024, Cilt: 39 Sayı: 3, 1825 - 1836, 20.05.2024

Öyküm Kanbir , Kadir Çavdar

https://doi.org/10.17341/gazimmfd.1183999

Öz

Atmosferik basınçlı plazma (ABP) uygulamaları, hızlı ve stabil şekilde malzeme yüzeylerine uygulanabilirliğinden ve vakum altındaki plazma uygulamalarına göre çok sayıda avantaja sahip olmasından dolayı günümüzde öne çıkmaya başlamıştır. ABP ile malzemelerin yüzey enerjilerinin, yapışma davranışlarının ve yüzey mekanik özelliklerinin iyileştirilmesi mümkündür. Fakat plazma uygulaması sonrası yüzeyin işlem görmemiş ilk haline geri dönme eğiliminde olmasından dolayı elde edilen değişiklikler kalıcı değildir. Bu çalışmada; ABP uygulanan metal yüzeylerin ıslanabilirliği, yaşlanma davranışı ve yüzeyin işlem görmemiş ilk haline geri dönüşünü geciktirebilecek ortam koşulları araştırılmıştır. Deney parametreleri olarak tek tip malzeme (H300LAD), iki farklı plazma uygulaması (soğuk ve sıcak) ve üç farklı plazma tekrar sayısı (1, 2 ve 3 tekrar) belirlenirken plazma işlemi uygulanan yüzeylerin ilk haline geri dönüşünü geciktirebilecek ortam koşulları olarak ise hava ve su (1, 10 ve 60 dakika) gibi iki farklı bekletme ortamı seçilmiştir. Ayrıca sıcaklığın yaşlanma süresine olan etkileri de iki farklı sıcaklık değeri (-20°C ve 30°C) için incelenmiştir. ABP uygulanan yüzeylerin 5 gün boyunca belli aralıklarla temas açıları ölçülüp uygulanan plazma tipinin, plazma tekrar sayısının, numunelerin bekletildiği ortamın ve sıcaklığın yaşlanma davranışına olan etkileri değerlendirilmiş ve yaşlanma süresini geciktirebilecek koşullar araştırılmıştır. Sonuçlar, yaşlanmanın yüzeylere uygulanan plazma tipinden, numunelerin bekletildiği ortam ve sıcaklıktan büyük ölçüde etkilendiğini göstermektedir.

Anahtar Kelimeler

Atmosferik basınçlı plazma, yaşlanma etkisi, ıslanabilirlik, su temas açısı, plazma yüzey işleme

Teşekkür

Plazma uygulama cihazları için FCB Ar-Ge Ltd. Şti. firmasına teşekkür ederiz.

Effect of atmospheric pressure plasma treatment on the wettability and ageing behavior of metal material surfaces

Öz

Atmospheric pressure plasma (APP) applications have started to come to the fore today because of their fast and stable applicability to material surfaces and many advantages compared to plasma applications made under vacuum. With APP, it is possible to improve the surface energies, adhesion behaviour and surface mechanical properties of materials. However, the changes obtained are not permanent since the surface tends to return to its untreated original state after plasma treatment. In this study, the wettability of APP treated metal surfaces, ageing behaviour and storage conditions that can delay the return of the surface to its untreated initial state were investigated. While one type of material (H300LAD), two different plasma treatments (cold and hot) and three different plasma treatment numbers (1, 2 and 3 times) were determined as test parameters, two different ambient conditions such as air and water (1, 10 and 60 minutes) were chosen as the storage conditions that can delay the return of the plasma treated surfaces to their original state. In addition, the effects of temperature on the ageing time were investigated for two different temperature values (-20°C and 30°C). The contact angles of the APP treated surfaces were measured at certain intervals during 5 days and the effects of the applied plasma type, plasma treatment number, the storage condition in which the samples were kept and the temperature on the ageing behaviour were evaluated and the conditions that could delay the ageing time were investigated. The results show that ageing is greatly affected by the type of plasma applied to the surfaces, the storage condition in which the samples are kept and the temperature.

Anahtar Kelimeler

Atmospheric pressure plasma, ageing effect, wettability, water contact angle, plasma surface treatment

Kaynakça

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