离子注入Mo^+或Zr^+提高钛在酸性氯化物中的耐蚀性

Improvement of Corrosion Resistance of Titanium in Acidic Chloride Solution by Ion-Implantation of Mo^+ or Zr^+

研究了采用多重能量离子注入Mo+ 或Zr+ 的钛在 70℃的 2 5 %MgCl2 +5 %NaCl+1.6%HCl溶液中的腐蚀行为。结果表明 ,钛在注入Mo+ 或Zr+ 后 ,自腐蚀电位大大提高 ,随时间的变化也显著减小 ,由活性溶解转变为自钝化状态。离子注入Mo+ 或Zr+ 能显著提高钛在酸性氯化物溶液中的耐蚀性 ;注入Mo+ 的效果较Zr+ 的好。钛在离子注入Mo+ 或Zr+后有高耐蚀性可归结于在试样表面形成了一层完整、致密的钛和钼 (或锆 )

The corrosion behavior of titanium ion-implanted with Mo + or Zr + by using multiple energy was investigate in 25% MgCl 2 +5%NaC1+1.6% HCl solution at 70 ℃ The result shows that after the ion-implantation of Mo + or Zr + corrosion potential of titanium is markedly increased and after initial stage of corrosion its variation with time attains to minimum, titanium changes into a self-passivation state from active dissolution. The ion-implantation of Mo + or Zr + can improve obviously the corrosion resistance in acidic chloride solution; the effect of ion implantation of Mo + is better than that of Zr +. The high corrosion resistance of titanium by ion-implanted with Mo + or Zr + is attributed to formation of an intact and compact passivation film of titanium and Mo (or Zr) on the surface of sample.