Kalsinasyon İşleminin Kemik Tozu Takviyeli Kompozitlerin Mekanik ve Tribolojik Performansına Etkisi

Abstract

Kemik tozu, polimer matrisli kompozitlerde kullanılan sürdürülebilir ve atık kökenli bir takviye malzemesidir. Kompozit üretimi öncesinde kemik tozuna uygulanan kalsinasyon işlemi; organik fazın uzaklaştırılması, mineral içeriğin artırılması ve arayüzey özelliklerinin iyileştirilmesi açısından kritik öneme sahiptir. Bu çalışmada, 500 °C’de 1 saat ve 900 °C’de 2 saat süreyle ısıl işleme tabi tutulmuş kemik tozunun epoksi matrisli kompozitlerin mekanik ve tribolojik performansına etkisi araştırılmıştır. Mekanik performans sertlik, çekme ve yorulma testleri ile değerlendirilmiş; kırılma yüzeyleri SEM analizi ile incelenmiştir. Tribolojik performans ise 10 N ve 20 N yükler ile 40 mm/s ve 55 mm/s hızlarda gerçekleştirilen aşınma testleri sonucunda sürtünme katsayısı ve ağırlık kaybı üzerinden belirlenmiştir. Sonuçlar, kemik tozu takviyesinin kompozitlerde mekanik ve tribolojik performansı iyileştirdiğini göstermiştir. Ancak kalsinasyon işlemi uygulanmamış numunelerde topaklanma ve mikro boşluklar sebebiyle çekme ve yorulma dayanımında azalma meydana gelmiştir. Özellikle 900 °C’de kalsine edilmiş kemik tozu içeren kompozitlerde daha homojen bir mikroyapı elde edilmiş, çekme ve yorulma performansı iyileşmiş ve aşınma direnci belirgin şekilde artmıştır.

Keywords

• Kemik Tozu
• Polimer Kompozitler
• Mekanik Performans
• Tribolojik Performans

Supporting Institution

TÜBİTAK

Project Number

1919B012401588

Ethical Statement

Hazırlanan makalede etik kurul izni alınmasına gerek yoktur. Hazırlanan makalede herhangi bir kişi/kurum ile çıkar çatışması bulunmamaktadır.

Thanks

Bu çalışma TÜBİTAK 2209-A Üniversite Öğrencileri Araştırma Projeleri Destekleme Programı, 1919B012401588 numaralı proje kapsamında desteklenmiştir. Sağlanan destek için teşekkür ederiz.

The Effect of Calcination Process on the Mechanical and Tribological Performance of Bone Powder Reinforced Composites

Abstract

Bone powder is a sustainable and waste-derived reinforcement material used in polymer matrix composites. The calcination process applied to bone powder before composite production is critical for removing the organic phase, increasing mineral content, and improving interfacial properties. In this study, the effect of bone powder heat-treated at 500 °C for 1 hour and 900 °C for 2 hours on the mechanical and tribological performance of epoxy matrix composites was investigated. Mechanical performance was evaluated using hardness, tensile, and fatigue tests; fracture surfaces were examined by SEM. Tribological performance was determined from friction coefficients and weight loss in wear tests performed at 10 N and 20 N loads, with speeds of 40 mm/s and 55 mm/s. The results showed that bone powder reinforcement improved the mechanical and tribological performance of the composites. However, in samples without calcination, a decrease in tensile and fatigue strength occurred due to agglomeration and micro-voids. Particularly in composites containing bone powder calcined at 900 °C, a more homogeneous microstructure was obtained, tensile and fatigue performance improved, and wear resistance increased significantly.

Keywords

• Bone Powder
• Polymer Composites
• Mechanical Performance
• Tribological Performance.

Supporting Institution

TÜBİTAK

Project Number

1919B012401588

Ethical Statement

Ethical approval is not required for the submitted manuscript. There is no conflict of interest with any individual or institution regarding the submitted manuscript.

Thanks

This study was supported by the TÜBİTAK 2209-A University Students Research Projects Support Program under project number 1919B012401588. We gratefully acknowledge the support provided.

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