通过动电位极化曲线和Mott-Schottky分析电化学方法，研究了M38合金纳米涂层在3.5% NaCl溶液中的电化学腐蚀行为.结果表明，在3.5% NaCl溶液中，纳米化虽然没有改变合金表面钝化膜的半导体类型(p型)，但是改善了钝化膜的致密性，降低了钝化膜中的载流子密度，提高了钝化膜的稳定性，所以，M38纳米涂层更耐氯离子侵蚀.
Nanocrystallized coatings (NC) of superalloy M38 were prepared by magnetron sputtering on samples of cast M38 alloy.The electrochemical behavior was investigated by potentiodynamic and capacitance measurements for samples of the cast M38 alloy without and with sputtered coatings.The results showed that M38 NC had higher resistance to pitting corrosion than M38 cast alloy in 3.5% NaCl solution.Although the passive films formed on the cast alloy and the sputtering coating were ptype,however the passive film formed on the latter was much compact with a lower density of carriers,thus exhibited a higher stability than that on the former.
参考文献
| [1] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%