Cargando…

Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy

Molybdenum silicon boron alloy is regarded as the next generation of superalloy that is expected to replace nickel-based superalloys. However, the high-temperature oxidation resistance of Mo-Si-B alloy has always been an issue worth studying. In this study, Mo-9Si-8B alloy was prepared via a plasma...

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Cheng, Li, Qiuliang, Guo, Zhenping, Li, Xiangrong, Ding, Xiangyu, Li, Xin, Li, Zhuoyue, Li, Bin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8471484/
https://www.ncbi.nlm.nih.gov/pubmed/34576533
http://dx.doi.org/10.3390/ma14185309
_version_ 1784574478677704704
author Wang, Cheng
Li, Qiuliang
Guo, Zhenping
Li, Xiangrong
Ding, Xiangyu
Li, Xin
Li, Zhuoyue
Li, Bin
author_facet Wang, Cheng
Li, Qiuliang
Guo, Zhenping
Li, Xiangrong
Ding, Xiangyu
Li, Xin
Li, Zhuoyue
Li, Bin
author_sort Wang, Cheng
collection PubMed
description Molybdenum silicon boron alloy is regarded as the next generation of superalloy that is expected to replace nickel-based superalloys. However, the high-temperature oxidation resistance of Mo-Si-B alloy has always been an issue worth studying. In this study, Mo-9Si-8B alloy was prepared via a plasma oscillatory pressure sintering process and pre-oxidized at 1300 °C while maintaining a certain balance of mechanical and oxidation properties. The influence of the oxide protective layer on its performance at high temperature of 1150 °C was explored, the micro-mechanism of its performance and its failure mode of the hinge-locking mechanism was illustrated, and finally, its oxidation kinetics was inferred. In conclusion, pre-oxidized Mo-9Si-8B (at.%) alloy did play a role in delaying the oxidation process during the initial period of cyclic oxidation. However, with the increase of cyclic oxidation time, the improvement of high-temperature oxidation resistance was limited.
format Online
Article
Text
id pubmed-8471484
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-84714842021-09-28 Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy Wang, Cheng Li, Qiuliang Guo, Zhenping Li, Xiangrong Ding, Xiangyu Li, Xin Li, Zhuoyue Li, Bin Materials (Basel) Article Molybdenum silicon boron alloy is regarded as the next generation of superalloy that is expected to replace nickel-based superalloys. However, the high-temperature oxidation resistance of Mo-Si-B alloy has always been an issue worth studying. In this study, Mo-9Si-8B alloy was prepared via a plasma oscillatory pressure sintering process and pre-oxidized at 1300 °C while maintaining a certain balance of mechanical and oxidation properties. The influence of the oxide protective layer on its performance at high temperature of 1150 °C was explored, the micro-mechanism of its performance and its failure mode of the hinge-locking mechanism was illustrated, and finally, its oxidation kinetics was inferred. In conclusion, pre-oxidized Mo-9Si-8B (at.%) alloy did play a role in delaying the oxidation process during the initial period of cyclic oxidation. However, with the increase of cyclic oxidation time, the improvement of high-temperature oxidation resistance was limited. MDPI 2021-09-15 /pmc/articles/PMC8471484/ /pubmed/34576533 http://dx.doi.org/10.3390/ma14185309 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Cheng
Li, Qiuliang
Guo, Zhenping
Li, Xiangrong
Ding, Xiangyu
Li, Xin
Li, Zhuoyue
Li, Bin
Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy
title Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy
title_full Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy
title_fullStr Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy
title_full_unstemmed Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy
title_short Study on the Pre-Oxidation and Resulting Oxidation Mechanism and Kinetics of Mo-9Si-8B Alloy
title_sort study on the pre-oxidation and resulting oxidation mechanism and kinetics of mo-9si-8b alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8471484/
https://www.ncbi.nlm.nih.gov/pubmed/34576533
http://dx.doi.org/10.3390/ma14185309
work_keys_str_mv AT wangcheng studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT liqiuliang studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT guozhenping studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT lixiangrong studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT dingxiangyu studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT lixin studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT lizhuoyue studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy
AT libin studyonthepreoxidationandresultingoxidationmechanismandkineticsofmo9si8balloy