화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.27, No.3, 132-136, March, 2017
자동차 브레이크 마찰재용 비침상형 육티탄산칼륨의 합성 연구
Synthesis of Potassium Hexatitanate with Non-Fibrous Shape as a Raw Material for Friction Material in Brake System
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We synthesized potassium hexatitanate, (K2Ti6O13, PT6), with a non-fibrous shape, by acid leaching and subsequent thermal treatment of potassium tetratitanate (K2Ti4O9, PT4), with layered crystal structure. By controlling nucleation and growth of PT4 crystals, we obtained splinter-type crystals of PT6 with increased width and reduced thickness. The optimal holding temperature for the layered PT4 was found to be ~920 °C. The length and width of the PT4 crystals were increased when the nucleation and growth time were increased. After a proton exchange reaction using aqueous 0.3 M HCl solution, and subsequent heat treatment at 850 °C, the PT4 crystal transformed into splinter-type PT6 crystals. The frictional characteristics of the friction materials show that as the particle size of PT6 increases, the coefficient of friction (COF) and wear amounts of both the friction materials and counter disc increase.
  1. Choy JH, Han YS, Song SW, J. Korean Chem. Soc., 37, 765 (1993)
  2. Choy JH, Han YS, Mater. Lett., 34, 111 (1998)
  3. Endo T, Nagayama H, Sato T, Shimada M, J. Mater. Sci., 23, 694 (1988)
  4. Oota T, Saito H, J. Cryst. Growth, 46, 331 (1979)
  5. Kang SO, Jang HS, Kim YI, Kim KB, Jung MJ, Mater. Lett., 61, 473 (2007)
  6. Na SJ, Park HC, Kim SH, J. Korean Soc. Tribol. Lubr. Eng., 31, 42 (2015)
  7. Cho KH, Cho MH, Kim SJ, Jang H, Tribol. Lett., 32, 59 (2008)
  8. Eriksson G, Pelton AD, Metall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci., 24, 795 (1993)
  9. Eriksson M, Jacobson S, Tribol. Int., 33, 817 (2000)