초록

Ceramics are highly useful materials as frictional materials, because of their high hardness and high heat resistance. This studyanalyzed the elastic wave characteristics in the abrasion test of two types of Si3N4. The friction coefficients of non-coatedceramics with SiO2 nano-colloid were almost similar to that without. However, the friction coefficients of heat-treated ceramicswith SiO2 nano-colloid coating differed, varying with the amount of SiO2 nano-colloid, and the heat treatment temperature. The characteristics of elastic waves generated during friction and wear were similar for the two types of ceramics. The resultsshow that the mechanical properties, such as strength, are determined by the components of the main ceramics in sintering

키워드

Friction and wear, Friction coefficient, Si3N4 ceramics, SiO2 nano-colloid, Elastic wave

참고문헌(9)open

  1. [단행본] R.N. Katz / 1983 / Progress in Nitrogen Ceramics / Martinus Nijhoff Publishers : 3

  2. [단행본] K.H. Jack / 1986 / Non-Oxide Technical and Engineering Ceramics / Elsevier Applied Science Publishers : 1

  3. [단행본] M.J. Hoffmann / 1993 / Silicon Nitride Ceramics / Material Research Society : 3

  4. [학술지] 남기우 / 2008 / Si₃N₄ 세라믹스의 균열 치유와 굽힘 강도 특성 / 대한기계학회논문집 A 32 (11) : 957 ~ 962

  5. [학술지] 남기우 / 2010 / 균열 길이와 코팅방법에 따른 Si3N4의 균열 치유 특성 / 대한기계학회논문집 A 34 (11) : 1715 ~ 1720

  6. [학술지] 남기우 / 2009 / SiO₂콜로이달에 의한 Si₃N₄ 복합 세라믹스의 상온굽힘강도 및 균열치유 현상 / 대한기계학회논문집 A 33 (7) : 652 ~ 657

  7. [학술지] 남기우 / 2009 / Cracked-healing and the bending strength of Si3N4 composite ceramics with SiO2 additions / Journal of Ceramic Processing Research 10 (4) : 497 ~ 501

  8. [학술지] 남기우 / 2009 / SiO₂ 나노 콜로이달 첨가량에 따른 Si₃N₄의 고온강도 특성 / 대한기계학회논문집 A 33 (11) : 1233 ~ 1238

  9. [학술지] 남기우 / 2010 / Effect of a colloidal SiO2 coating to crack healing and the bending strength of Si3N4 ceramics / Journal of Ceramic Processing Research 11 (1) : 20 ~ 24