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Nİ3AI partikülleri ile pekiştirilmiş bronz matrisli kompozitlerin kuru sürtünme ve aşınma davranışları

Dry sliding friction and wear behaviours of bronze matrix composites reinforced with Ni3Al particles

Journal Name:

  • Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi

Publication Year:

  • 2017
DOI: 
10.5505/pajes.2016.27136

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The bronze based composite reinforced with Ni3Al particles was produced by classical powder metallurgy (PM) technique. Particles used as reinforcement were produced via ball milling of Ni3Al cast alloy. The powders of constituents of bronze and Ni3Al powder (1%wt75-100/jm particle in size) were mixed, compacted axially and sintered. The composite was characterized using light microscopy and scanning electron microscopy. The compression strength and hardness of composites were determined. The tribological properties of composite and unreinforced bronze were determined at pin-on-disc geometry and results were compared with conventional phenolic resin bonded brake lining. The results revealed that PM bronze has higher strength than composite. The hardness of composite is higher than PM bronze. The sliding and wear tests revealed that the wear resistance and coefficient of friction of composite are higher than conventional brake lining.
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Abstract (Original Language): 
Ni3Al partikülleri ile pekiştirilmiş bronz esaslı kompozit klasik toz metalürjisi (TM) tekniği ile üretilmiştir. Pekiştirici olarak kullanılan partiküller döküm Ni3Al alaşımının bilyeli değirmende öğütülmesiyle üretilmiştir. Bronz alaşımı bileşenlerinin tozları ve Ni3Al (ağ. %1, 75-100/jm partikül boyutunda) karıştırılmış, eksenel olarak sıkıştırılmış ve sinterlenerek kompozit malzeme elde edilmiştir. Kompozit ışık mikroskobu ve taramalı elektron mikroskobu kullanılarak karakterize edilmiştir. Basma mukavemetleri ve sertlikler belirlenmiştir. Kompozitin ve pekiştirilmemiş bronzun tribolojik özellikleri disk üzerinde pim geometrisinde belirlenmiş ve sonuçlar geleneksel fenolik reçine ile bağlanan fren balatası ile karşılaştırılmıştır. Sonuçlar TM bronzun kompozitten daha mukavemetli olduğunu göstermiştir. Kompozitin sertliği TM bronzdan daha yüksektir. Sürtünme ve aşınma testleri kompozitin aşınma direncinin ve sürtünme katsayısının geleneksel balatadan daha yüksek olduğunu açığa çıkarmıştır.
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  • Turkish

REFERENCES

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