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The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys
Jiang, Quantong1,2,3; Lu, Dongzhu1,2,3; Liu, Chang1,2,3; Liu, Nazhen1,2,3; Hou, Baorong1,2,3
2021-11-16
Source PublicationFRONTIERS IN MATERIALS
ISSN2296-8016
Volume8Pages:12
Corresponding AuthorJiang, Quantong(jiangquantong@qdio.ac.cn) ; Liu, Nazhen(liunazhen@qdio.ac.cn)
AbstractThe Pilling-Bedworth ratio of oxides preferentially formed from the precipitated phases in magnesium alloys were calculated. The results showed that the PBR value of Nd2O3 preferentially formed from Mg12Nd was 1.0584, and the PBR value of Y2O3 preferentially formed from Mg24Y5 was 1.1923. Both the Nd2O3 and Y2O3 would provide a good protection to the Mg matrix. The Gd2O3 preferentially formed from Mg3Gd, whereas the MgO preferentially formed from MgNi2. The PBR value of these two oxides were both larger than 2. The corresponding oxides formed from the common precipitated phases Mg17Al12, MgZn2, MgCu2, Mg2Ca, Mg12Ce, and MgAg were all less than 1. The oxide films formed on surfaces of pure Mg and Mg-xY (x = 3, 5, 7 wt.%) alloys at high temperatures were analyzed. The results showed that the oxide films were composed of a Y2O3/MgO outer layer and an inner layer rich with Y2O3. The formation of Y2O3 was mainly caused by the oxidation of Mg24Y5. The more Y2O3 existed in the composite oxidation film, the better corrosion resistance of the Mg-Y samples.
Keywordoxide PBR value magnesium alloys precipitated phases Mg-Y
DOI10.3389/fmats.2021.761052
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000725623800001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/177303
Collection海洋环境腐蚀与与生物污损重点实验室
Corresponding AuthorJiang, Quantong; Liu, Nazhen
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao, Peoples R China
3.Qilu Univ Technol, Sch Mat Sci & Engn, Jinan, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jiang, Quantong,Lu, Dongzhu,Liu, Chang,et al. The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys[J]. FRONTIERS IN MATERIALS,2021,8:12.
APA Jiang, Quantong,Lu, Dongzhu,Liu, Chang,Liu, Nazhen,&Hou, Baorong.(2021).The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys.FRONTIERS IN MATERIALS,8,12.
MLA Jiang, Quantong,et al."The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys".FRONTIERS IN MATERIALS 8(2021):12.
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