Effect of Mo and Y 2 O 3 additions on the microstructure and properties of fine WC-Co cemented carbides fabricated by spark plasma sintering
Source abstract
Abstract
Abstract The effects of Mo and Y2O3 additions on the microstructure and properties of fine WC-6Co cemented carbides prepared by spark plasma sintering (SPS) were investigated. The microstructure, mechanical properties and corrosion behavior were analyzed by SEM, TEM, XPS, mechanical property tests and potentiodynamic polarization curve measurements. The results show that there are no significant differences in the microstructure and properties of alloys with 1.0% Y2O3 addition. However, the addition of Mo was beneficial for refining the WC grains. The hardness of alloys increased until the maximum value, and then followed a decreasing trend with the increase of Mo content. In addition, the relative density of alloys decreased with the increase of Mo addition, which caused to an obvious decline in fracture toughness. With the additions of Mo and Y2O3, the corrosion resistance of alloys improved significantly both in acid and alkaline solutions (0.1 M HCl and 0.1 M NaOH solutions). The adding amount of Mo should be controlled within a certain range and 1 wt% of Mo has the most positive effect on the comprehensive properties of WC-6Co alloys.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. The effects of fine WC contents and temperature on the microstructure and mechanical properties of inhomogeneous WC-(fine WC-Co) cemented carbides10.1016/j.ceramint.2016.08.119 ↗
2. Cemented carbides with highly oriented WC grains and formation mechanisms10.1016/j.msea.2016.02.021 ↗
3. Effect of nano-yttria addition on the properties of WC/Co composites10.1016/j.matdes.2013.05.034 ↗
4. Effect of sintering atmosphere on microwave prepared WC–8wt.%Co cemented carbide10.1016/j.ijrmhm.2013.05.003 ↗
5. Fabrication of tungsten carbide–vanadium carbide core–shell structure powders and their application as an inhibitor for the sintering of cemented carbides10.1016/j.scriptamat.2012.07.043 ↗
6. Spark plasma-sintered WC–ZrO2–Co nanocomposites with high fracture toughness and strength10.1111/j.1551-2916.2010.03685.x ↗
7. Effect of electrical discharge machining on strength and reliability of WC–30%Co composite10.1016/j.matdes.2012.03.016 ↗
8. Effect of Mo addition on the microstructure and properties of WC-Ni-Fe hard alloys10.1016/j.jallcom.2015.05.277 ↗
9. An investigation of cobalt phase structure in WC–Co cemented carbides before and after deep cryogenic treatment10.1016/j.ijrmhm.2015.04.007 ↗
10. Electrochemical corrosion behaviors of straight WC–Co alloys: exclusive variation in grain sizes and aggressive media10.1016/j.ijrmhm.2016.02.009 ↗
11. Effects of Mo additions on the corrosion behavior of WC–TiC–Ni hardmetals in acidic solutions10.1016/j.ijrmhm.2012.12.003 ↗
12. Microabrasion of WC-Co hardmetals in corrosive media10.1016/j.wear.2003.09.003 ↗
13. The evaluation of tribo-corrosion synergy for WC-Co hardnetals in low stress abrasion10.1016/j.wear.2003.04.001 ↗
14. Influence of TiC additions on the corrosion behaviour of WC–Co hardmetals in alkaline solution10.1016/j.ijrmhm.2014.05.009 ↗
15. Influence of NbC and VC on microstructures and mechanical properties of WC–Co functionally graded cemented carbides10.1016/j.matdes.2015.10.156 ↗
16. The corrosion behaviour of WC-VC-Co hardmetals in acidic media10.1016/j.corsci.2010.05.033 ↗
17. Carbide phases formed in WC-M (M=Fe/Ni/Cr) system10.1016/j.ceramint.2007.11.001 ↗
18. Effect of Cu on the microstructures and properties of WC-6Co cemented carbides fabricated by SPS10.1016/j.ijrmhm.2016.06.007 ↗
19. Effect of Mo and Co additions on the microstructure and properties of WC-TiC-Ni cemented carbides10.1016/j.ijrmhm.2011.07.011 ↗
20. Effect of Mo2C on the microstructure and properties of WC–TiC–Ni cemented carbide10.1016/j.ijrmhm.2008.01.007 ↗
21. Effect of Mo2C additions on the properties of SPS manufactured WC–TiC–Ni cemented carbides10.1016/j.ijrmhm.2013.01.008 ↗
22. Effect of Mo2C addition on the microstructure and fracture behavior of (W, Ti)C-based cemented carbides10.1016/j.ceramint.2014.07.150 ↗
23. Effects of Y2O3 addition on microstructures and mechanical properties of WC–Co functionally graded cemented carbides10.1016/j.ijrmhm.2014.11.004 ↗
24. Tungsten carbide platelet-containing cemented carbide with yttrium containing dispersed phase10.1016/S1003-6326(08)60019-9 ↗
25. Influence of Ru additions on the corrosion behaviour of WC–Co cemented carbide alloys in sulphuric acid10.1016/j.ijrmhm.2011.02.007 ↗
26. Conventional sintering of WC with nano-sized Co binder: characterization and mechanical behavior10.1016/j.ijrmhm.2015.04.033 ↗
27. A fundamental investigations on the spark plasma sintering/synthesis process II. Modeling of current and temperature distributions10.1016/j.msea.2004.11.019 ↗
28. Spark plasma sintering of WC, cemented carbide and functional graded materials10.1016/j.ijrmhm.2012.03.007 ↗
29. VC and Cr3C2 doped WC-based nano-cermets prepared by MA and SPS10.1016/j.ceramint.2014.04.004 ↗
30. Microstructural control of ultrafine and nanocrystalline WC-12Co-VC/Cr3C2 mixture by spark plasma sintering10.1016/j.ceramint.2010.11.026 ↗
31. Microstructure and properties of ultrafine cemented carbides—differences in spark plasma sintering and sinter-HIP10.1016/j.msea.2012.05.065 ↗
32. Investigation into the sintered behavior and properties of nanostructured WC–Co–Ni–Fe hard metal alloys10.1016/j.msea.2014.03.096 ↗
33. VC, Cr3C2 doped ultrafine WC–Co cemented carbides prepared by spark plasma sintering10.1016/j.ijrmhm.2010.09.004 ↗
34. Characterization and properties of sintered WC–Co and WC–Ni–Fe hard metal alloys10.1016/j.jallcom.2013.09.188 ↗
35. On the hardness of submicrometer-sized WC–Co materials10.1016/j.msea.2014.12.106 ↗
36. Effects of Mo and VC on the microstructure and properties of nano-cemented carbides10.2298/SOS1601041C ↗
37. Corrosion of pure Mg as a function of grain size and processing route10.1002/adem.200800046 ↗
38. Y2O3 and NbC doped ultrafine WC-10Co alloys by low pressure sintering10.1016/j.ijrmhm.2009.12.008 ↗
39. Effect of WC grain size on the corrosion behavior of WC–Co based hardmetals in alkaline solutions10.1016/j.ijrmhm.2009.02.004 ↗
40. Corrosion properties of Co-based cemented carbides in acidic solutions10.1016/S0263-4368(03)00027-1 ↗
41. Anodic polarization and corrosion of cemented carbides with cobalt and nickel binders10.1007/BF01153988 ↗
42. Corrosion and passivation behaviors of molybdenum in aqueous solutions of different pH10.1016/S0013-4686(98)00180-7 ↗
43. Comparison of electrochemical stability of transition metal carbides (WC, W2C, Mo2C) over a wide pH range10.1016/j.jpowsour.2011.10.093 ↗