ENDÜSTRİYEL SİALON-TİN KESİCİ UÇ ÜRETİMİNDE PROSES KOŞULLARININ ETKİSİ

Yıl 2018, Cilt: 6 Sayı: 4, 716 - 724, 11.12.2018

Nurcan Çalış Açıkbaş , Ferhat Kara

https://doi.org/10.21923/jesd.448209

Cited By: 2

Öz

Süperalaşımlar havacılık alanında yaygın olarak kullanılan ve işlenmesi
zor malzemelerdir. Alümina ve silisyum nitrür esaslı seramik matrisli
kompozitler süperalaşımların işlenmesinde kullanılmaktadırlar. SiAlON esaslı
seramik kesici uçlar seri üretime uygun gaz basınçlı sinterleme tekniği ile
üretilebildikleri için Al₂O₃-SiC_w kesici
uçlara karşı maliyet avantajı sağlamaktadırlar. Ancak SiAlON seramikleri
kimyasal dayanım açısından süperalaşım işlenmesinde yeterli değildir. Bu
nedenle bu çalışmada SiAlON seramiklerinin kimyasal dayanımını arttırmak için
TiN ilavesi yapılarak özgün komposizyon tasarımlarıyla hazırlanmış SiAlON-TiN
kompozitlerinin pilot ölçekte üretimi yapılarak, üretim esnasında karşılaşılan
sorunlar ve çözüm önerileri açıklanmıştır. Üretim sürecinde yapılan
optimizasyon çalışmaları neticesinde istenen özelliklerde kesici uç üretimi
pilot ölçekte başarılmıştır.

Anahtar Kelimeler

Kesici Uç, SiAlON-TiN Kompozit, Proses, Mikroyapı, Endüstriyel Üretim

THE EFFECT OF PROCESS CONDITIONS ON THE PRODUCTION OF INDUSTRIAL SİALON-TİN CUTTING TOOLS

Öz

Super alloys are widely used in the field of aviation
and they are difficult to machine. Alumina and silicon nitride based ceramic
matrix composites have been used for super alloy machining. Since SiAlON based
ceramic cutting tools can be produced with gas pressure sintering method which
is suitable for serial production, they provide cost advantages over Al₂O₃-SiC_w
cutting tools. However SiAlON ceramics have the disadvantage for super alloy
machining due to inadequate properties in respect of chemical durability.
Therefore in this study in order to enhance chemical durability of SiAlON
ceramics, SiAlON based ceramics prepared with unique compositional design with
TiN incorporation. SiAlON-TiN composites were prepared in pilot scale which
allows description of the problems and their solutions. The optimization efforts
in the production process of SiAlON-TiN cutting tools with the desired
properties have been achieved in a pilot scale.    

Anahtar Kelimeler

Cutting tool, SiAlON-TiN Composites, Process, Microstructure, Industrial Production

Kaynakça

• Acikbas, N. C., Kumar, R., Kara, F., Mandal, H., and Basu, B., 2011. Influence of β-Si3N4 particle size and heat treatment on microstructural evolution of αı:βı-SiAlON ceramics, Journal of the European Ceramic Society, 31(4), 629-635.
• Acikbas, N.C., Kara, F., 2017. The effect of z value on intergranular phase crystallization of αı/βı-SiAlON-TiN composites. Journal of the European Ceramic Society,37(3), 923-930.
• Acikbas, N.C., Demir, O., 2013. The effect of cation type, intergranular phase amount and cation mole ratios on z value and intergranular phase crystallization of SiAlON ceramics. Ceramics International ,39(3), 3249-59.
• Acikbas, N.C., Tegmen, S., Ozcan, S, Acikbas, G., 2014. Thermal shock behaviour of α:β-SiAlON–TiN composites. Ceramics International, 40(2), 3611-8.
• Acikbas NC. 2018. Tribological Behaviour of SiAlON-TiN Composites, Journal of the European Ceramic Society, DOI:10.1016/j.jeurceramsoc.2018.01.013
• Ayas, E, Kara, A, Mandal, H, Turan, S, Kara, F., 2004. Production of alpha-beta SiAlON-TiN/TiCN composites by gas pressure sintering. Silicate Industries, 69(7), 287-92.Bitterlich, B, Bitsch, S, Friederich, K., 2008. SiAlON based ceramic cutting tools. Journal of the European Ceramic Society,28(5), 989-94.
• Blugan, G., Hadad, M., Janczak‐Rusch, J., Kuebler, J., Graule, T., 2005. Fractography, mechanical properties, and microstructure of commercial silicon nitride–titanium nitride composites, Journal of the American Ceramic Society, 88(4), 926-33.
• G. Brandt, 1999. Wear and Thermal Shock Resistant SiAlON Cutting Tool Material, U.S. Patent No. 5,965,471.
• Bowen, P., Highfield, J.G., Mocellin, A., Ring, T. A., 1990. Degradation of Aluminium Nitride Powder in an Aqueous Environment, Journal of the American Ceramic Society, 73, 724-728.
• Desmaison, J, Desmaison, M., 1999. Boride/nitride composites: synthesis and properties. In Materials Science of Carbides, Nitrides and Borides (pp. 267-284). Springer Netherlands.
• Evans, A.G. and Charles, E.A., 1976. Fracture toughness determinations by indentation, Journal of the American Ceramic Society, 59, 371–372.
• Graziani, T.B., Bellosi, A.B. 1995. Densification and characteristics of TiN ceramics. Journal of Materials Science, 14(15), 1078-81.
• Kocjan, A., Krnel, K., Kosmač, T., 2008. The influence of temperature and time on the AlN powder hydrolysis reaction products, Journal of the European Ceramic Society, 28(5), 1003-8.
• Krnel, K., Kosmac̆, T., 2001. Protection of AlN powder against hydrolysis using aluminum dihydrogen phosphate, Journal of the European Ceramic Society, 21(10), 2075-9.
• Krnel, K., Dražič, G., Kosmač, T., 2004. Degradation of AlN powder in aqueous environments, Journal of materials research, 19(4), 1157-63.
• Mandal, H., Kara, F., Turan, S., Kara, A., 2003. Novel SiAlON ceramics for cutting tool applications, Key Engineering Materials, 237, 193-202.
• Mandal, H., and Acikbas, N. Ç., 2013. Processing, characterization and mechanical properties of SiAlONs produced from low cost β-Si3N4 powder, KONA Powder and Particle Journal, 30, 22-30.
• Mehrotra, P. K., Nixon, R. D., Swiokla, J. L., 1994. High z SiAlON and Cutting Tools Made Therefrom and Method of Using, International Application Published Under the Patent Cooperation Treaty (PCT), WO 94/12317.
• Niihara, K., Morena, R., Hasselman, P.H., 1982. Evaluation of Kıc of brittle solids by the indentation method with low crack-to-indent ratios, Journal of Materials Science Letters, 1 13–16.
• Olhero, S.M., Novak, S., Oliveira, M., Krnel, K., Kosmac, T., Ferreira, J.M., 2004. A thermo-chemical surface treatment of AlN powder for the aqueous processing of AlN ceramics, Journal of materials research, 19(3), 746-51.
• Ozcan, S., Acikbas, G., Ozbay, N., Acikbas, N.C., 2017. The effect of silicon nitride powder characteristics on SiAlON microstructures, densification and phase assemblage, Ceramics International, 43(13), 10057-10065.
• Smirnov, KL. 2016. β-SiAlON-TiN/TiB2. International Journal of Self-Propagating High-Temperature Synthesis, 25(2), 80-5.
• “Kesici Uç Uygulamaları için SiAlON Seramiklerinin Mikroyapı Tasarımı”, TÜBİTAK-TEYDEB, Araştırmacı, Proje No: No:3040287, (2004-2007).