The influence of Nb on hot corrosion behavior of Ni-based superalloy at 800 °C in a mixture of Na2SO4-NaCl

被引：21

作者：

Weng, Fei ^{[1
]}

Yu, Huijun ^{[2
]}

Wan, Kai ^{[1
]}

Chen, Chuanzhong ^{[1
]}

机构：

[1] Shandong Univ, Dept Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China

[2] Shandong Univ, Sch Mech Engn, Key Lab High efficiency & Clean Mech Manufacture, Minist Educ, Jinan 250061, Shandong, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH | 2014年 / 29卷 / 21期

关键词：

HIGH-TEMPERATURE CORROSION; SINGLE-CRYSTAL SUPERALLOYS; FE-BASED SUPERALLOYS; OXIDATION BEHAVIOR; MECHANICAL-PROPERTIES; SO2-O2; ATMOSPHERES; NI-5AL COATINGS; AL-ALLOY; 900-DEGREES-C; RESISTANCE;

D O I：

10.1557/jmr.2014.282

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New-type Ni-based superalloys with and without Nb were designed in this study. Their hot corrosion behaviors were investigated at 800 degrees C with the deposition of a mixture of Na2SO4 and NaCl. The corrosion kinetics was studied by thermogravimetry. Microstructure of the corrosion scales was studied by SEM and the phase constituent was analyzed by XRD. Results showed that the corrosion kinetics followed approximately parabolic law. The corrosion scales on the two Ni-based alloys were comprised of Cr2O3, Al2O3, TiO2, and NiCr2O4. NiO was only detected in the scale on alloy without Nb. Nb2O5 appeared with the addition of 2.0 wt% Nb. No sulfide emerged in the scales. The corrosion scales both exhibited a layered structure. With Nb addition, the hot corrosion resistance of the alloy was notably improved. The action mechanism of Nb was investigated extensively in this study.

引用

页码：2596 / 2603

页数：8

共 50 条

[21] HOT CORROSION OF Ni-Cr BINARY ALLOYS INDUCED BY Na2SO4-NaCl MIXTURES.
Shinata, Yutaka
Kobayashi, Hisao
Nishi, Yoshizumi
Nippon Kinzoku Gakkai-si, 1985, 49 (04): : 273 - 278
[22] HOT CORROSION OF NI-CR BINARY-ALLOYS INDUCED BY NA2SO4-NACL MIXTURES
SHINATA, Y
KOBAYASHI, H
NISHI, Y
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1985, 49 (04) : 273 - 278
[23] Effect of Co on oxidation and hot corrosion behavior of two nickel-based superalloys under Na2SO4-NaCl at 900 °C
Meng, Jun-sheng
Chen, Ming-xuan
Shi, Xiao-ping
Ma, Qiang
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2021, 31 (08) : 2402 - 2414
[24] CORROSION OF COBALT IN MOLTEN NA2SO4-NACL SYSTEM
TOMIK, B
LESKO, J
TRZIL, J
ULLRYCH, J
CHEMICKE ZVESTI, 1977, 31 (01): : 17 - 22
[25] Hot Corrosion Behavior of Inconel625 Alloy and Welds in Na2SO4-NaCl Molten Salt
Zhang, Zhongke
Xiong, Jianqiang
Chu, Shusheng
Li, Xuanbai
Jiang, Changming
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 2023, 52 (05): : 1842 - 1850
[26] CYCLIC HOT CORROSION OF AL DIFFUSION-COATED NI3AL AND NI3SI IN NA2SO4-NACL MIXTURE
KAMIDE, H
TANAKA, Y
NAKAGAWA, H
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1993, 57 (02) : 176 - 181
[27] Hot Corrosion Behavior of Inconel625 Alloy and Welds in Na2SO4-NaCl Molten Salt
Zhang Zhongke
Xiong Jianqiang
Chu Shusheng
Li Xuanbai
Jiang Changming
RARE METAL MATERIALS AND ENGINEERING, 2023, 52 (05) : 1842 - 1850
[28] THE CORROSION OF NI3AL IN A COMBUSTION GAS WITH AND WITHOUT NA2SO4-NACL DEPOSITS AT 600-800-DEGREES-C
NIU, Y
GESMUNDO, F
VIANI, F
WU, W
OXIDATION OF METALS, 1994, 42 (3-4): : 265 - 284
[29] Influence of the combined-effect of NaCl and Na2SO4 on the hot corrosion behaviour of aluminide coating on Ni-based alloys
Yu, Xiao
Song, Peng
He, Xuan
Khan, Asim
Huang, Taihong
Li, Chao
Li, Qiaolei
Lu, Kaiyue
Chen, Kunlun
Lu, Jiansheng
JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 790 : 228 - 239
[30] An investigation of oxidation/hot corrosion-creep interaction at 800 °C in a Ni-base superalloy coated with salt mixture deposits of Na2SO4-NaCl-NaVO3
Mannava, Venkateswararao
Sambasivarao, A.
Paulose, Neeta
Kamaraj, M.
Kottada, Ravi Sankar
CORROSION SCIENCE, 2019, 147 : 283 - 298

← 1 2 3 4 5 →