How Improved to WC Based Hard Materials

Year 2019, , 1434 - 1441, 31.12.2019

Ahmet Yönetken , Ayhan Erol

https://doi.org/10.18185/erzifbed.537711

Abstract

Tungsten carbide is known to have
excellent corrosion resistance and high hardness within carbide ceramics. Due
to their superior mechanical properties and wear resistance, tungsten carbide
cutting tools containing Co binder have been the subject of many studies. There
are a limited number of works regarding the use of Ni and Fe as a binder in
tungsten carbide based composites, especially processing with microwave
radiation. In this study, a composite cutting tool made of electroless nickel
coated tungsten carbide ceramic powder was produced by microwave sintering. Two
different tungsten carbide powder sizes of 2 µm and 10 µm were used for the
production of composite cutting tool. The microwave sintering was carried out
at two different temperatures of 1200 and 1400 ° C for 2 hours.
Characterization of composite cutting tools was made by XRD, hardness,
compression test and electron microscopy techniques.

Keywords

Powder Metallurgy, Ceramic–Metal Composites, , Microwave, , Sintering, , Electroless Plating

WC Tabanlı Sert Malzemeler Nasıl Geliştirili

Abstract

Tungsten karbür seramikler içerisinde mükemmel korozyon direnci ve yüksek
sertliğe sahip olduğu bilinmektedir. Üstün mekanik özellikleri ve aşınma
direncinden dolayı, Co bağlayıcı içeren tungsten karbür kesici takımlar birçok
çalışmaya konu olmuştur. Tungsten karbür esaslı kompozitlerde, özellikle
mikrodalga radyasyonu ile işlem yapan, Ni ve Fe'nin bağlayıcı olarak
kullanımıyla ilgili sınırlı sayıda çalışma vardır. Bu çalışmada, elektriksiz
nikel kaplı tungsten karbür seramik tozundan yapılmış bir kompozit kesici alet
mikrodalga sinterleme ile üretildi. Kompozit kesici alet üretiminde 2 farklı
tungsten karbür toz büyüklüğü 2 µm ve 10 µm kullanıldı. Mikrodalga sinterleme,
2 saat boyunca iki farklı 1200 ve 1400 ° C sıcaklıkta gerçekleştirildi.
Kompozit kesici aletlerin karakterizasyonu XRD, sertlik, sıkıştırma testi ve
elektron mikroskobu teknikleri ile yapılmıştır.

Keywords

Toz Metalürjisi, , Seramik-Metal Kompozitler, Mikrodalga Sinterleme, Akımsız Kaplama

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