scholarly journals Binder Phase Transformation in WC-Co Cemented Carbides

1968 ◽  
Vol 32 (10) ◽  
pp. 993-997 ◽  
Author(s):  
Hisashi Suzuki ◽  
Takaharu Yamamoto ◽  
Hitoyuki Sakanoue
Keyword(s):  
Phase Transformation ◽  
Cemented Carbides ◽  
Binder Phase

scholarly journals Toughening cemented carbides by phase transformation of zirconia

2021 ◽  
Vol 202 ◽  
pp. 109559
Author(s):  
Wentao Jiang ◽  
Hao Lu ◽  
Jinghong Chen ◽  
Xuemei Liu ◽  
Chao Liu ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Cemented Carbides

scholarly journals Sinterability of Cemented Carbides Containing Aluminum in Binder Phase.

1995 ◽  
Vol 42 (4) ◽  
pp. 422-426 ◽  
Author(s):  
Minoru Fukunaga ◽  
Masahiro Machida ◽  
Keizo Kobayashi
Keyword(s):  
Cemented Carbides ◽  
Binder Phase

High Energy Milling of WС-FeСr Cemented Carbide

2019 ◽  
Vol 799 ◽  
pp. 136-141
Author(s):  
Marek Tarraste ◽  
Jakob Kübarsepp ◽  
Kristjan Juhani ◽  
Märt Kolnes ◽  
Mart Viljus
Keyword(s):  
Particle Size ◽  
Ball Mill ◽  
Size Range ◽  
High Energy ◽  
Cemented Carbide ◽  
Cemented Carbides ◽  
Binder Phase ◽  
Metal Powders ◽  
Powder Mixtures ◽  
High Energy Milling

During production of cemented carbides hard and brittle tungsten carbide (WC) and ductile metal powders (mainly from Fe-group) are milled together. Complete milling results in a Gaussian distribution and narrow particle size range of the milled powder which promote the homogeneity and improve the properties of sintered composites. Cobalt, conventional metal employed in cemented carbides, possesses good comminution characteristics with WC powder. However, its toxicity and fluctuating price pushes researchers to find suitable alternatives and Fe-based alloys have shown most promising results. Cemented carbides with the Fe-Cr system as metal binder phase have potential to perform better than regular WC-Co composites in corrosive and oxidative environments. The goal of this paper was to prepare uniform cemented carbides powders with relatively high fraction of stainless Fe-Cr steel. To achieve a uniform powder mixture is a challenge at high ductile steel fraction. High energy milling (HEM) is a powerful technique for achieving (ultra) fine powder mixtures with narrow powder size range. HEM was carried out in a novel high energy ball mill RETSCH Emax. Milling in tumbling ball mill, which is the most widely used method, was employed for reference. Prepared powder mixtures were characterised in terms of particle size, size distribution and shape. In addition, powder mixtures were consolidated via spark plasma sintering to evaluate the effect of the milling method and the duration on the microstructure of final cemented carbide.

scholarly journals Influence of Surface Finishing and Binder Phase on Friction and Wear of WC Based Hardmetals

2007 ◽  
Vol 561-565 ◽  
pp. 2403-2406 ◽  
Author(s):  
Koenraad Bonny ◽  
Patrick de Baets ◽  
Omer Van der Biest ◽  
Jef Vleugels ◽  
Bert Lauwers
Keyword(s):  
Friction And Wear ◽  
Surface Finishing ◽  
Cemented Carbides ◽  
Wear Volume ◽  
Binder Phase ◽  
Well Test ◽  
Wear Performance ◽  
The One ◽  
Sliding Distance ◽  
Nickel Binder

At present, cobalt is the most commonly used binder material in tungsten carbide based hardmetals. Current research on sliding wear performance of these cemented carbides, however, reveals promising results for nickel binder as well. Test samples of WC-Co and WC-Ni hardmetals have been machined and surface finished by wire-EDM and grinding. From comparative dry sliding pin-on-plate experiments on wire-EDM’ed, ground and polished grades, correlations are derived between wear volume loss and friction on the one hand and contact pressure, sliding distance, binder phase and microstructure on the other hand. The lowest wear levels are encountered with polished cemented carbides. The EDM induced surface modification turns out to deteriorate wear resistance, especially during the running-in stage of sliding. These findings are in agreement with Xray diffraction measurements of the residual stress level in the WC phase.

Binder phase grain size in WC–Co-based cemented carbides

2010 ◽  
Vol 63 (12) ◽  
pp. 1165-1168 ◽  
Author(s):  
Jonathan Weidow ◽  
Hans-Olof Andrén
Keyword(s):  
Grain Size ◽  
Cemented Carbides ◽  
Binder Phase

Sintering of High Mn Cemented Carbides in Mn-Rich Environment

2020 ◽  
Vol 405 ◽  
pp. 402-407
Author(s):  
Marek Tarraste ◽  
Jakob Kübarsepp ◽  
Kristjan Juhani ◽  
Märt Kolnes ◽  
Mart Viljus ◽  
...  
Keyword(s):  
Mechanical Performance ◽  
Cemented Carbides ◽  
Binder Phase ◽  
Tungsten Carbides ◽  
Wear Properties ◽  
Ni Alloys ◽  
Binder Composition ◽  
Austenite Stabilizer ◽  
Formation Phase ◽  
Binder Metal

The economic, environmental and healthcare aspects are pushing cemented carbide industry to reduce or even avoid the usage of conventional binder metals – nickel and cobalt. Commonly, austenitic Fe-Ni alloys have been preferred choice for substituting Co. Similar to Ni, manganese acts as austenite stabilizer and studies have shown that Fe-Mn alloys offer alternative binder metal to Co and Ni in cemented tungsten carbides. In addition, Fe-Mn as a binder potentially offers improved wear resistance due to the well-known wear properties of Fe-Mn-C steels. Addition of chromium to the binder composition increases corrosion performance of composite. Cemented carbides bonded with austenitic FeCrNi binder have demonstrated promising performance. In present work the possibility of achieving austenitic binder phase through substitution of nickel by manganese as an austenite stabilizer is investigated. Structure formation, phase composition and mechanical performance of WC-FeMn and WC-FeCrMn cemented carbides are discussed.

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