WC-CO Based Scratch Tools Production and Characterization for Brick Factory

Yıl 2013, Cilt: 26 Sayı: 4, 591 - 596, 02.01.2014

Muzaffer Erdogan , Ayhan Erol , Ahmet Yönetken

Öz

The main objective of this study is to produced WC-Co-Ni ceramic-metal composites Electroless Ni coated WC-Co powders were used in powder metallurgy techniques for making samples. 2 μm - 10μm micron grain size of WC powders and 10μm grain sized Co powders obtained from Sigma Aldrich Company in this work. Co-WC powders were cold pressed under 400bar pressure before sintered 1200oC -1400oC in microwave furnace. 90% N2 + 10% H2 mixed atmosphere were used during sintering. Mechanical tests and metallographic analysis were investigated for characterization of composite materials after sintered. Experimental results carried out for 1300°C suggest that the best properties as σmax and hardness (HB) were obtained at 1300°C and the microwave furnace sintering WC and Co powders is a promising technique to produce ceramic reinforced Co composites.

Anahtar Kelimeler

Powder Metallurgy, Ceramic–Metal Composites, Microwave Powder Sintering, Scratch Tools.

Kaynakça

• Xiong Y., Lau K., Zhou X., Schoenung J. M., 2008,
• “A Streamlined Life Cycle Assessment On The Fabrication Of WC-Co Cermets”, Journal Of Cleaner Production, Volume: 16, 1118-1126.
• Ma X. M., Ji G., 1996, “Nanostructured WC-Co Alloy
• Pepared By Mechanical Alloying”, Journal Of Alloys And Compounds, Volume: 245, 30-32. McCandlish L., Kear B.H., Kim B. K., 1992,
• “Processing And Properties Of Nanostructured WC- Co”. Nanostructured Materials, Volume: 1, 119-124. Liu W., Song X., Zhang J., Zhang G., Liu X.,2008,
• “Thermodynamic Analysis For In Situ Synthesis Of WC–Co Composite Powder From Metal Oxides”, Materials Chemistry And Physics, Volume: 109, 235– 2 Koc R., Kodambake S. K., Euro J., 2000, Ceramic Materyals, Volume: 20, 1859.
• Zhang , Z. Y., Wahlbeg S., Wang M. S., 1999,
• Muhammed M., Nanostructral Materyals, Volume:12 163-1
• McCandlish L. E., Kear B. H., 1992, Nanostructural Materyals. Volume:1, 119125.
• McCandlish L. E., Kear B. H., 1993, Nanostructural Materyals,Volume: 3, 19-24.
• Ryu T., Sohn H. Y., Han H., Kim Y., Hwang K. S., Mena M., And Fang Z. Z., February 2008, “Nanograined Chemical
• Materials Transactions B, Volume: 39, 1-6. By And Vapor Synthesis”, Metallurgical Upadhaya G. S., 1998, “Cemented Tungsten
• Carbide”, Noyes Publications, New York (NY), 1–6. Zhu Y. T., And Manthiram A., 1996, Composites,
• Part B, Eng., Volume: 27, 407–413. Nassaj E. T., Mirhosseini S. H., 2003, “An in situ
• WC–Ni Composite Fabricated By The SHS Method”, Journal Of Materials Processing Technology, Volume: 142, 422–426. Upadhyaya G. S., Bhaumik S. K., 1988, “Sintering
• Of Submicron WC–10% Co Hardmetals Containing Ni And Volume:249, 105–106. Sciences Engineering-A, Li T., Li Q, Fuha J. Y. H., Yu P. C., Wu C. C., 2006,
• “Effects Of Lower Cobalt Binder Concentrations In Sintering Of Tungsten Karbide”, Materials Science And Engineering A Volume: 430, 113–119. Ban Z. G., Shaw L. L., 2002, “Synthesis And Processing Of Nanostructured WC-Co Materials”,
• Journal Of Materials Science, Volume: 37, 3397–3403.
• Mannesson K., Elfwing M., Kusoffsky A.,Norgren S., Agren J., 2008, “Analysis Of WC Grain Growth
• During Sintering Using Electron Backscatter Difraction And Image Analyses”, International Journal Of Refractory Metals & Hard Materials, Volume: 26, 449– 4 Akhtar F., Humail I. S., Askari S. J., Tian J., Shiju G., 2007, “Effect Of WC Particle Size On The Microstructure, Mechanical Properties And Fracture Behavior
• Carbides”, International Journal Of Refractory Metals And Hard Materials, Vol: 25, 405-410. Cemented Greenfield M., Wolfe G., 1998, “Powder Metal
• Technologies And Applications Of ASM Handbook”, ASM International, Vol: 7, 492–496. Krishna B. V., Misra V. N., Mukherjee P. S., Sharma P., 2002, “Microstructure And Properties Of Flame
• Sprayed Tungsten Carbide Coatings”, International Journal Of Refractory And Hard Materials, Vol: 20, 355-3
• Rogl P., 1998, “Phase Diagrams Of Ternary Metal–
• A. Yönetken, A., Erol, “Fabrication ofelectroless Ni plated Fe-TiC metal matrix composites”, Science And Engineering of Composite Materials, 18/3, 145-149, 2011