In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment
The thermal shock protection of SiC/SiC composites have become pivotal challenges in promoting their application in a heat field environment. This study presents a borosilicate glass (BSG) coating was fabricated successively by slurry brushing-sintering for SiC/SiC composites. The results show that...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-09-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423022007 |
| _version_ | 1827780446211014656 |
|---|---|
| author | Bo Li Xu Chen Lulu Tian Yi Zhang Xiaoyan Yuan Xuqin Li Laifei Cheng |
| author_facet | Bo Li Xu Chen Lulu Tian Yi Zhang Xiaoyan Yuan Xuqin Li Laifei Cheng |
| author_sort | Bo Li |
| collection | DOAJ |
| description | The thermal shock protection of SiC/SiC composites have become pivotal challenges in promoting their application in a heat field environment. This study presents a borosilicate glass (BSG) coating was fabricated successively by slurry brushing-sintering for SiC/SiC composites. The results show that the coated SiC/SiC composites exhibit excellent thermal protective resistance with a rather light mass change (<0.59%) at 1200 °C (ΔT = 1000 °C) for 750 cycles. All tested samples possess a high residual strength of more than 95.71% retention. Moreover, the protection mechanisms of the coated SiC/SiC composites are analyzed that the relevance involves the BSG bubbles in-situ formation and dynamic filling. The bubbles are possibly due to generation and pressure of CO and CO2 at the SiC-BSG interface during the rapid heating and cooling. The oxidation kinetics is controlled by diffusional mechanisms, and the growth rate constant and kinetic exponent were 0.23 and 0.37 for the BSG@SiC/SiC composites. The internal structure was not oxidized, indicating that the BSG coating has excellent protection. |
| first_indexed | 2024-03-11T15:04:43Z |
| format | Article |
| id | doaj.art-65c6303a88c544fa96053d6f11a7c795 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:04:43Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-65c6303a88c544fa96053d6f11a7c7952023-10-30T06:04:30ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012670977106In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatmentBo Li0Xu Chen1Lulu Tian2Yi Zhang3Xiaoyan Yuan4Xuqin Li5Laifei Cheng6Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, 710072, China; School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, ChinaXi'an Golden Mountain Ceramic Composites Co., Ltd., Xi'an, Shaanxi, 710065, ChinaXi'an Golden Mountain Ceramic Composites Co., Ltd., Xi'an, Shaanxi, 710065, ChinaScience and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, 710072, China; Corresponding author.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, 710072, China; School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, ChinaSchool of Materials and Environmental Engineering, Chengdu Technological University, Chengdu, 611730, China; Corresponding author.Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, 710072, ChinaThe thermal shock protection of SiC/SiC composites have become pivotal challenges in promoting their application in a heat field environment. This study presents a borosilicate glass (BSG) coating was fabricated successively by slurry brushing-sintering for SiC/SiC composites. The results show that the coated SiC/SiC composites exhibit excellent thermal protective resistance with a rather light mass change (<0.59%) at 1200 °C (ΔT = 1000 °C) for 750 cycles. All tested samples possess a high residual strength of more than 95.71% retention. Moreover, the protection mechanisms of the coated SiC/SiC composites are analyzed that the relevance involves the BSG bubbles in-situ formation and dynamic filling. The bubbles are possibly due to generation and pressure of CO and CO2 at the SiC-BSG interface during the rapid heating and cooling. The oxidation kinetics is controlled by diffusional mechanisms, and the growth rate constant and kinetic exponent were 0.23 and 0.37 for the BSG@SiC/SiC composites. The internal structure was not oxidized, indicating that the BSG coating has excellent protection.http://www.sciencedirect.com/science/article/pii/S2238785423022007SiC/SiC compositesThermal shockBorosilicate glass bubblesOxidation kineticsStrength |
| spellingShingle | Bo Li Xu Chen Lulu Tian Yi Zhang Xiaoyan Yuan Xuqin Li Laifei Cheng In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment Journal of Materials Research and Technology SiC/SiC composites Thermal shock Borosilicate glass bubbles Oxidation kinetics Strength |
| title | In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment |
| title_full | In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment |
| title_fullStr | In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment |
| title_full_unstemmed | In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment |
| title_short | In-situ formation of the BSG bubbles toward SiC/SiC composites protection mechanisms under thermal shock treatment |
| title_sort | in situ formation of the bsg bubbles toward sic sic composites protection mechanisms under thermal shock treatment |
| topic | SiC/SiC composites Thermal shock Borosilicate glass bubbles Oxidation kinetics Strength |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423022007 |
| work_keys_str_mv | AT boli insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment AT xuchen insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment AT lulutian insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment AT yizhang insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment AT xiaoyanyuan insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment AT xuqinli insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment AT laifeicheng insituformationofthebsgbubblestowardsicsiccompositesprotectionmechanismsunderthermalshocktreatment |