CP-Titanyum ve CoCrMo Alaşımı Üzerine Katodik Ark Biriktirme Yöntemi ile Kaplanmış Filmlerin Tribolojik Özellikleri

Öz

Biyomalzemelerin yük taşıyan implantlarda tribolojik özelliklerinin iyleştirilmesi oldukça önemlidir. Bu çalışmada iki farklı türdeki biyomalzeme üzerine (CP-Ti ve CoCrMo alaşımı) CAPVD yöntemiyle yüzeylere biriktirilen TiN ve ZrN filmlerin kuru aşınma şartlarında, 1N ve 3N'luk yük altında tribolojik özelliklerinin kıyaslanması yapılmıştır. Ayrıca yüzeyde biriktirilen TiN ve ZrN filmlerinin CP-Ti ve CoCrMo malzemesi üzerindeki mikroyapısal ve mekanik özellikleri incelenmiştir. TiN ve ZrN kaplı CP-Ti ve CoCrMo malzemelerinin kristal yapısı, elementel bileşimi ve yüzey morfolojisi sırasıyla XRD, SEM ve SEM-EDS analizleri kullanılarak belirlenmiştir. 1N’luk yük altında yapılan aşınma testi sonrası kuru ortamda yapılan test sonuçlarına göre en düşük sürtünme katsayısı yaklaşık 0,35 değerinde işlemsiz CoCrMo numunesinde görülürken, en yüksek sürtünme katsayısı ise 0,55 değerinde ZrNkaplı CoCrMo numunesinde bulunmuştur. 3N’luk yük altında en düşük aşınma oranı ZrN/CCM numunesinde 0,38x10-6 mm3/Nm iken, en yüksek aşınma oranı değeri işlemsiz Ti numunesinde 2,10 x10-6 mm’dir. Sonuç olarak, TiN ve ZrN kaplı CP-Ti ve CoCrMo numunelerin mikrosertlik değerleri ve aşınma direncinin arttığı belirlenmiştir.

Anahtar Kelimeler

• CA-PVD
• CP-Ti
• CoCrMo
• Mikrosertlik
• Aşınma direnci

Tribological Properties of Films Coated on CP-Titanium and CoCrMo Alloy by Cathodic Arc Deposition Method

Öz

The improvement of tribological properties of biomaterials in load-bearing implants is very important. In this study, the tribological properties of TiN and ZrN films deposited on surfaces by CA-PVD method on two different types of biomaterials (CP-Ti and CoCrMo alloy) were compared under dry wear conditions and 1N and 3 N loads. In addition, the microstructural and mechanical properties of TiN and ZrN films deposited on the surface on CP-Ti and CoCrMo materials were investigated. The crystal structure, elemental composition and surface morphology of TiN and ZrN coated CP-Ti and CoCrMo materials were determined using XRD, SEM and SEM-EDS analyses, respectively. According to the test results conducted in a dry environment after the wear test under 1N load, the lowest friction coefficient was found in the untreated CoCrMo sample at approximately 0.35, while the highest friction coefficient was found in the ZrN-coated CoCrMo sample at 0.55. While the lowest wear rate under 3N load was 0.38x10-6 mm3/Nm in the ZrN/CCM sample, the highest wear rate was 2.10x10-6 mm3/Nm in the untreated Ti sample. As a result, it was determined that the microhardness values and wear resistance of the TiN and ZrN-coated CP-Ti and CoCrMo samples increased.

Anahtar Kelimeler

• CA-PVD
• CP-Ti
• CoCrMo
• Microhardness

Kaynakça

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