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http://dx.doi.org/10.4150/KPMI.2022.29.4.291

Effect of Polymeric Binders on Green body Properties of WC-Co Cemented Carbides  

Lim, Young-Soo (School of Advanced Materials Engineering, Industrial Technology Center for Environment-friendly Materials, Andong National University)
Ahn, Sun-Yong (KORLOY)
Lim, Jae-Suk (School of Advanced Materials Engineering, Industrial Technology Center for Environment-friendly Materials, Andong National University)
Paek, Yeong-Kyeun (School of Advanced Materials Engineering, Industrial Technology Center for Environment-friendly Materials, Andong National University)
Chung, Tai-Joo (School of Advanced Materials Engineering, Industrial Technology Center for Environment-friendly Materials, Andong National University)
Publication Information
Journal of Powder Materials / v.29, no.4, 2022 , pp. 291-296 More about this Journal
Abstract
The green body of WC-Co cemented carbides containing polymeric binders such as paraffin, polyethylene glycol (PEG), and polyvinyl acetate (PVA) are prepared. The green density of the WC-Co cemented carbides increases with the addition of binders, with the exception of PVA, which is known to be a polar polymeric substance. The green strength of the WC-Co cemented carbides improves with the addition of paraffin and a mixture of PEG400 and PEG4000. In contrast, the green strength of the WC-Co does not increase when PEG400 and PEG4000 is added individually. The compressive strength of the green body increases to 14 MPa, and the machinability of the green body improves when more than 4-6 wt% paraffin and a mixture of PEG400 and PEG4000 is used. Simultaneously, the sintered density of WC-Co is as high as 99% relative density, similar to a low binder addition of 1-2 wt%.
Keywords
WC; Co; Binder; Density; Strength;
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  • Reference
1 H. E. Exner: Inter. Metals Rev., 24 (1979) 149.
2 T.-J. Chung, S.-Y. Ahn and Y.-K. Paek: J. Kor. Ceram. Soc., 42 (2005) 171.
3 E. Menendez, J. Sort, A. Concustell, S. Surinach, J. Nogues and M. D. Baro: Nanotechnol., 18 (2007) 185609.
4 K. Rodiger, H. van den Berg, K. Dreyer, D. Kassel and S. Orths: Int. J. Refract. Met. Hard Mater., 18 (2000) 111.
5 J. S. Reeds: Principles of Ceramic Processing, John Wiley & Sons, Inc., New York (1995).
6 M. D. Sacks and T.-Y. Cheng: J. Am. Ceram. Soc., 67 (1984) 526.
7 K. Salmi, H. Staf and P.-L. Lasson: J. Mater. Eng. Perform., 30 (2021) 2545.
8 Sandvik: Japan, JP P2008-31552A (2008).
9 F. V. Lenel: Powder Metallurgy Principles and Applications, Metal Powder Industries Federation, Princeton, New Jersy (1980).
10 N. Favrot, J. Besson, C. Colin and F. Delannay: J. Am. Ceram. Soc., 82 (1999) 1153.
11 M. D. Sacks and T.-Y. Cheng: J. Am. Ceram. Soc., 67 (1984) 532.
12 Sandvik: Japan, JP P2007-84916A (2007).