Effect of the Amount of Free Silicon on the Tribological Properties of Si-SiC

Free Silicon 함량에 따른 Si-SiC 복합재료의 마찰 마모 특성

  • 김인섭 (명지대학교 공과대학 무기재료공학과) ;
  • 이병하 (명지대학교 공과대학 무기재료공학과)
  • Published : 1994.05.01

Abstract

An investigation was carried out to understand the effect of the amount of free silicon on the tribological properties of Si-SiC. The specimens of dense Si-SiC composites with various amount of free silicon were fabricated in the temperature of 175$0^{\circ}C$ after molding under various pressure. Wear properties were measured by ball-on-plate wear tester under the constant weight of 4 Kgf at constant sliding speed of 500 mm/sec in water. As the result, the Rockwell hardness and fracture strength of Si-SiC composites remained nearly constant up to 16.62 vol% of free silicon in the Si-SiC microstructure. The Si-SiC composites containing the free silicon of 16.62 vol% was considered to be prominent in the tribological properties, which had the friction coefficient of 0.08 and the specific wear rate of 2.4$\times$10-8$\textrm{mm}^2$Kgf-1. The analysis of the wear surface indicated the complicated processes occuring on the surface such as fine polishing, abrasion, microfracture.

Keywords

References

  1. J. Mat. Sci. v.13 Microstructural Characterization of "REFEL"(Reaction-Bounded) Sillicon Carbides. G.R. Sawyer;T.F. Page
  2. Adv. Ceram. Mater v.3 Formation and Transportation of Intergranular and Nodular Fine-Graind β-SiC in Reaction-Sintered SiC C.B. Lim;T. Iseki
  3. Presented at the Fall Meeting of the Basic Science Division of the American ceramic Society(New Orleans La.) Effect of Microstructure on the Mechanical Properties of Reaction Sintered Silincon Carbide M Srinivasan;M.Kasprzyk
  4. Am. Ceram. Soc Bull. v.57 no.8 Development and Processing of Injection-Moldable Reaction-Sintered SiC Compositions P.A. Willerment;R.A. Pett;J.J. Whalen
  5. Journal of the Korean Ceramic Society v.30 no.1 Properties of Reaction-Bonded Silicon Carbide Depending on Graphite Additions In-Sub Han;Joo-Hwan Yang;Dong-Soo Suhr
  6. Adv. Ceram. Mater. v.3 Transport of Fine-Grained β-Sic in SiC/Liquid Si System C.B. Lim;T. Iseki
  7. Special Ceramics v.5 The Fabrication and Properties of Self-Bonded Silicon Carbide Bodies C.W. Forrest;P. Kennedy;J.V. Shennan
  8. 日本 ヒラミツクス 協會學術論文誌 v.97 no.2 Wear Behavior of Silicon Nitride Ball M. Iwasa;M. Kinoshita
  9. Ceram Bull v.64 no.2 Ceramic Technology for Advanced Heat Engines Project D.R. Johnson;A.C. Schaffhauser;V J. Tennery;E.L Long
  10. J. Mater. Sci. v.21 Microstructural Evolution in Reaction-Bonded Sillicon Carbide J.N. Ness;T.F. Page
  11. Yogyo-Kyo-kai-shi v.84 Microsturcture of Silicon Carbide Prepared by Reaction-Sintering T. Hase;H. Suzuki