采用电化学测试方法对一种新兴的超临界水氧化(SCWO)废物处理技术设备用材--Ni基合金671在含S2O2-3根离子的NaCl水溶液中的点蚀行为进行了研究.结果表明,在纯Na2S2O3水溶液中,671合金不发生点蚀;而在纯NaCl水溶液中,671合金存在发生点蚀的氯离子临界浓度,且其耐蚀性优于Ni基合金690;在向NaCl溶液中添加不同浓度的S2O2-3根离子时,随添加S2O2-3浓度的逐渐提高,671合金的点蚀逐渐受到抑制,耐蚀性能提高,该特性将使得671合金在用于SCWO反应的设备制造材料方面极具优势.
参考文献
| [1] | Akgerman ARK, Roop RK, Hess SDYeo. Supercritical fluid technology review in mordem theory and applications[M]. Eds.Bruno TJ, Ely JE. CRC Pres. 1991. 497 |
| [2] | Garcia KM, Mizia RE. Corrosion investigation of Multilayered Ceramics and Experimental Nickel alloys in SCWO Process Environments[C]. Proc. ASME Heat Transfer Division, 317, vol.2, New York, NY: American Society of Mechanical Engineers,1995, 299 |
| [3] | 张丽,韩恩厚,张召恩,等.超临界水法回收再生废塑料过程中合金的腐蚀[C].第四届全国超临界流体会一论文集,No.445, 2002.8.13 |
| [4] | Boukis N, Claussen N, Ebert K, et al. Corrosion phenomena on ally 625 in aqueous solutions containing hydrochloric acid and oxygen under subcritical and supercritical conditions [ J ]. J.Eur. Ceram. Soc. 1997, 17 (1) :71. |
| [5] | Mitton DB, Zhang SH, Hautanen KE, et al. Evaluating stress corrosion and corrosion aspects in SCWO systems for the destruction of hazardous waste[J ]. CORROSION/97, Paper No.203, ( New Orleans, LA: NACE 1997) |
| [6] | Choi D, Was G. Pit growth in alloy 600/690 steam generator in simulated concentrated environments (Cu2+,Cl-,and SO42-)[J]. Corrosion, 1990, 46( 1 ): 100 |
| [7] | Iofa Z A. Mechanism of the effect of hydrogen sulfide and inhibitors on iron corrosion in acid solutions [J]. Protection of Metal, 1980, (16):220 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%