Effect of $Al_2O_3$ and $Y_2O_3$ on Machining of Silicon itride

알루미나와 이트리아가 질화규소의 가공성에 미치는 영향

  • Published : 1996.03.01

Abstract

The effect of sintering aids on the sinterability for silcion nitride has been studied by hundreds workers. However the effect of sintering aids on the machinability as the own trobles which is the major barrier for the field applications of the ceramic components has not been fully studied. in this study the contents of Al2O3 and Y2O3 in silicon nitride were varied from 0 to 8 wt% respectively. The physical and mechanical properties of the silcion nitride were measured. The optimal microstructure of silicon nitride balls with the excellent machinability by adding with various contents of sintering aids was studied by MGF(magnetic-fluid grinding)technique. An attempt to figure out how the mechanical properties influence the machinability of silicon-nitride ball was made.

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References

  1. National Institute of Standards and Technology SP 834 Ceramic Machining: Assessment of Current Practice and Research Needs in the United States S. Jahanmir;L.K. Ives;A.W. Ruff;M.B. Peterson
  2. J. Applied Electromagnets in Materials v.1 Principles of Magnetic Fluid Grinding of Ceramic Balls N.Umehara;K. Kato
  3. J. Am. Ceram. Soc. v.59 Fracture Toughness Determination by Indentation A.G. Evans;E.A. Charles
  4. Proc. Int. Symposium of Factors in Densification and Sintering of Oxide and Non-oxide Ceramics A Study of Sintered Si₄N₄ Compositions with Y₂O₃and Al₂O₃Densification Additives J.T. Smith;C.L. Quackenbush
  5. J. Am. Ceram. Soc. v.61 Mechano-Chemical Polishing of Silicon Nitride H. Vora;T.W. Orent;R.T. Strokes
  6. Wear of Materials Abrasion and Wear of Silicon in Fluid Environments S. Danyluk;J. Clark;S.W. Lee;D.S. Lee;K.C. Ludema(ed.)