Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K
Hot corrosion behavior of pure Co, Co-10Cr and Co-10Cr-5Al alloys in the presence of a salt coat of Na2SO4+NaCl in air at 1173 K was studied. The results indicated that among the three samples, the mass gain of Co-10Cr-5Al alloy is the smallest, while that of Co-10Cr is biggest. The corrosion produc...
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Online Access: | https://doi.org/10.1515/htmp-2012-0134 |
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doaj-be9f3483d915425abb18c4092d1e49c72021-09-06T19:19:52ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242013-06-0132331732110.1515/htmp-2012-0134Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 KFu Guangyan0Guo Xingxing1Liu Qun2Zhao Xin3Su Yong4College of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, ChinaCollege of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, ChinaCollege of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, ChinaCollege of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, ChinaCollege of Mechanical Engineering, Shenyang University of Chemical Technology, Shenyang, Liaoning 110142, ChinaHot corrosion behavior of pure Co, Co-10Cr and Co-10Cr-5Al alloys in the presence of a salt coat of Na2SO4+NaCl in air at 1173 K was studied. The results indicated that among the three samples, the mass gain of Co-10Cr-5Al alloy is the smallest, while that of Co-10Cr is biggest. The corrosion products of Co-10Cr-5Al can be divided into three layers, of which the outside layer is CoO, the middle layer consists of Cr2O3 and Al2O3, and the inside layer is a small amount of Chromium sulfide and aluminum sulfide. The corrosion products of Co-10Cr can also be divided into three layers, from the outermost to the innermost layer are CoO, Cr2O3, and small amount of Cr2S3. The corrosion resistance of Co-10Cr-5Al alloy is better than that of Co-10Cr alloy.https://doi.org/10.1515/htmp-2012-0134co-based alloysna2so4+25%nacl salt filmhot corrosion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fu Guangyan Guo Xingxing Liu Qun Zhao Xin Su Yong |
spellingShingle |
Fu Guangyan Guo Xingxing Liu Qun Zhao Xin Su Yong Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K High Temperature Materials and Processes co-based alloys na2so4+25%nacl salt film hot corrosion |
author_facet |
Fu Guangyan Guo Xingxing Liu Qun Zhao Xin Su Yong |
author_sort |
Fu Guangyan |
title |
Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K |
title_short |
Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K |
title_full |
Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K |
title_fullStr |
Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K |
title_full_unstemmed |
Hot Corrosion of Co-based Alloys with 25%NaCl+75%Na2SO4 Coating at 1173 K |
title_sort |
hot corrosion of co-based alloys with 25%nacl+75%na2so4 coating at 1173 k |
publisher |
De Gruyter |
series |
High Temperature Materials and Processes |
issn |
0334-6455 2191-0324 |
publishDate |
2013-06-01 |
description |
Hot corrosion behavior of pure Co, Co-10Cr and Co-10Cr-5Al alloys in the presence of a salt coat of Na2SO4+NaCl in air at 1173 K was studied. The results indicated that among the three samples, the mass gain of Co-10Cr-5Al alloy is the smallest, while that of Co-10Cr is biggest. The corrosion products of Co-10Cr-5Al can be divided into three layers, of which the outside layer is CoO, the middle layer consists of Cr2O3 and Al2O3, and the inside layer is a small amount of Chromium sulfide and aluminum sulfide. The corrosion products of Co-10Cr can also be divided into three layers, from the outermost to the innermost layer are CoO, Cr2O3, and small amount of Cr2S3. The corrosion resistance of Co-10Cr-5Al alloy is better than that of Co-10Cr alloy. |
topic |
co-based alloys na2so4+25%nacl salt film hot corrosion |
url |
https://doi.org/10.1515/htmp-2012-0134 |
work_keys_str_mv |
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