Sintering behavior and properties of diamond/cemented carbides
Source abstract
Abstract
Dense diamond/cemented carbides were fabricated at around 1300 °C, 41 MPa for 3 min under meta-stable conditions for diamonds by pulsed-electric current sintering. Diamond particles were coated with SiC to prevent the graphitization of diamond with molten binder during sintering. No graphitization of diamond was confirmed by microstructure observation and Raman scattering analysis. The combination of SiC coating of diamond and rapid sintering was effective to fabricate diamond/cemented carbides. These new materials, composed of diamond and cemented carbide, showed a 50% larger fracture toughness and 10 times better wear resistance compared with conventional cemented carbides, and five times better machinability compared with diamond compacts. The diamond/cemented carbides are applicable to wear-resistant sliding tools such as centerless blades, work rests, and stoppers.
Source: openaire · Quality: candidate unverified · Source record ↗
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References (20)
Show source-provided references
1. Suzuki · 1986
2. Schwarzkopf · 1960
3. Bruton · 1978
4. Diamond-graphite equilibrium from growth and graphitization of diamond10.1063/1.1731938 ↗
5. Moriguchi H, Arisawa Y, Otsuka M. Euro Patent No. 774,527. US Patent No. 5,889,219. JP Patent No. 3,309,897.
6. Moriguchi H, Tsuduki K, Ikegaya A. Diamond dispersed cemented carbide produced without using ultra-high pressure equipment. In: Proceedings of Plansee Seminar, 2001. p. 326–36.
7. Porada MW, Gerdes T, Rodiger K, Kolaska H. In: Euro PM ’96 Proceedings, 1996. p. 69–76.
8. Sintering of nanophase WC–15vol%Co hard metals by rapid sintering process10.1016/j.ijrmhm.2004.06.006 ↗
9. Trends in advanced SPS spark plasma sintering systems and technology10.4164/sptj.30.11_790 ↗
10. Miyamoto Y, Moriguchi H. Euro Patent No. 1,143,044. US Patent No. 6,673,439.
11. Growth mechanism of nanometer sized SiC and oxidation resistance of SiC-coated diamond particles10.1111/j.1551-2916.2004.00809.x ↗
12. Elastic/plastic indentation hardness and indentation fracture toughness10.1007/BF01233154 ↗
13. Development of titanium coatings on particulate diamond10.1111/j.1151-2916.2000.tb01524.x ↗
14. Super coating for superabrasives
15. Cr, Ti coated industrial diamond grit products
16. Higuchi K, Sato M, Nakano T. Jpn Patent No. 3,119,098.
17. Raman spectrum of diamond10.1103/PhysRevB.1.1687 ↗
18. Crack deflection process-110.1016/0001-6160(83)90046-9 ↗
19. Fujita · 1993
20. Properties and application of diamond10.2493/jjspe1933.51.1490 ↗