전기화학적 방법을 이용한 Ti(Grade 2)재의 최적 어닐링 열처리에 대한 연구

A Study of Annealing Heat-treatment for Ti(Grade 2) by Electrochemical Methods

  • 발행 : 2002.01.01

초록

In this paper, the annealing heat treatments for the best corrosion resistant of Ti(Grade 2) were studied in a 3.5% NaCl solution by electrochemical methods. The annealing heat treatments were accomplished at 650, 700 and $750^{\circ}C$ with different time of 30min., 1hour and 2 hours in a vacuum condition. The obtained results are: 1) in the case of solution heat treated $930^{\circ}C$ for 2 hours in a vacuum and air, the corrosion potentials were -348.7 and -567. 1mV, and current densities 2.32 and $22.62\mu\textrm{A}$, respectively, 2) as increase both annealing heat treatment temperature 650, 700, $750^{\circ}C$ and time 30min., 1 hour, 2 hours, the corrosion potential were decreased, whereas corrosion current density increased, 3) in the case of cyclic polarization, the measured charges were increased as increasing solution heat treatment temperature and time, 4) on the bases of corrosion potential, current density and charge, the best annealing temperature and time were measured as $700^{\circ}C$ and 30min. for Ti(Grade 2) material.

키워드

참고문헌

  1. 日本金屬學會誌 v.61 no.4 日本金屬學會誌 草道英武
  2. ASM series Titanium Alloys E.W.Collings
  3. 日本金屬學會誌 v.65 no.1 日本金屬學會誌 衫岐康昭
  4. 日本金屬學會誌 v.66 no.4 日本金屬學會誌 古原忠;牧正志
  5. 日本金屬學會誌 v.66 no.8 日本金屬學會誌 村懶系三
  6. 日本金屬學會誌 v.64 no.7 日本金屬學會誌 草道英武
  7. 日本金屬學會誌 v.64 no.7 日本金屬學會誌 草道英武
  8. ASM Metals Handbook ASM Metals Handbook R.W.Schutz;D.E.Thomas
  9. Met.Soc.AIME Met.Soc.AIME D.Eylon
  10. Metal Handbook 9th ed. v.3 Metal Handbook 9th ed. ASM Committee
  11. Metal Trans v.43 Metal Trans O.O.Miller
  12. Corrosion v.45 no.5 Corrosion A.A.Mazhar;A.G.Allah
  13. J. of Corros Sci. of Korea v.25 no.1 J. of Corros Sci. of Korea Kim Kee-Joo et al.
  14. Corrosion v.45 no.5 Corrosion P.Mckay;D.B.Miton
  15. British Corrosion Jr. v.35 no.2 British Corrosion Jr. S.Zhou;A.Turnbull https://doi.org/10.1179/000705900101501137
  16. Corrosion Protection v.9 Corrosion Protection Horoji;Nakauchi
  17. 韓國舶用機關學會誌 v.24 no.6 韓國舶用機關學會誌 白新榮
  18. Corrosion v.41 no.1 Corrosion P.Mckay;D.B.Mition
  19. Corrosion v.48 no.9 Corrosion S.Frangini;A.Mignone https://doi.org/10.5006/1.3315992
  20. Annual Book of ASTM Standard G61-86 Annual Book of ASTM Standard ASTM Designation