17-4 PH Paslanmaz Çeliğin MoS2 Nanoakışkan Koşulları Altında Sürtünme/Aşınma Performansının İncelenmesi

Bu çalışmada 17-4 PH paslanmaz çelik malzemenin farklı koşullar altında, sürtünme/aşınma performansları incelenmiştir. Deneyler kuru, baz sıvı (bitkisel bazlı yağ) ve molibden de sülfür (MoS2) nanoakışkan koşulları altında gerçekleştirilmiştir. MoS2 nanoakışkanın çökelme veya topaklanmasının önüne geçme adına karışıma sodyum dodesil sülfat (SDS) yüzey aktif maddesi ilave edilmiştir. Sürtünme/aşınma deneylerinde bir pim-disk test cihazı kullanılmıştır. Deneylerde performans değerlendirilmesinde, sürtünme katsayısı, mikrosertlik, titreşim seviyesi, ortalama yüzey pürüzlülüğü (Ra) ve pim yüzey aşınması kullanılmıştır. Pim-disk deneyleri sonucu elde edilen verilere göre, MoS2 nanoakışkan koşulunun diğer koşullara göre daha iyi performans gösterdiği belirlenmiştir. MoS2 nanoakışkan koşulu kuru koşula göre sürtünme katsayısı, titreşim ortalaması, yüzey pürüzlülük Ra ve mikrosertlik değerlerini sırasıyla % 74,51, % 87,22, % 38,69 ve % 6,41 oranında azaltmıştır.

Anahtar Kelimeler:

17-4 PH, Pim-disk, sürtünme/aşınma, nanoakışkan, 17-4 PH, pin-on-disc, friction/wear, nanofluid

Investigation of Friction/Wear Performance of 17-4 PH Stainless Steel under MoS2 Nanofluid Conditions

This study investigated the friction/wear behaviour of 17-4 PH stainless steel material under different conditions. Experiments were carried out under dry, base liquid (vegetable-based oil) and molybdenum disulfide (MoS2) nanofluid conditions. Sodium dodecyl sulfate (SDS) surfactant was added to the prepared mixture due to prevent sedimentation or agglomeration of the MoS2 nanofluid. A pin-on-disc tester was used in the friction/wear experiments. The coefficient of friction, microhardness, vibration level, average surface roughness (Ra) and pin surface wear was used to evaluate the performance in the experiments. According to the data obtained as a result of pin-on-disc experiments, it was determined that the MoS2 nanofluid condition showed the best performance compared to the conditions. MoS2 nanofluid condition decreased friction coefficient by 74.51%, vibration average by 87.22%, Ra value by 38.69% and microhardness values by 6.41% compared to dry condition.

Keywords:

17-4 PH, pin-on-disc, friction/wear, nanofluid,

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