Protection behavior of Ti-SiO2 modified potassium silicate coating on K447a alloy at 1000 ° C
文献类型：期刊论文
| 作者 | Du, Yao1,2; Chen, Zheng1,2; Lu, Yiliang3; Yang, Lanlan4; Wang, Cheng5; Zhu, Shenglong2; Wang, Fuhui6 |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 50期号:23页码:49552-49567 |
| 关键词 | Potassium silicate coating K447A alloy Filler modification High temperature oxidation Corrosion protection |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2024.09.301 |
| 通讯作者 | Zhu, Shenglong(slzhu@imr.ac.cn) |
| 英文摘要 | Potassium silicate coatings cured by calcium hydrogen phosphate and modified by fillers of Ti and SiO2 powders were prepared on K447A alloy at 120 degrees C. The influences of Ti, SiO2 and both powders on the oxidation behavior of the coated specimens were investigated at 1000 degrees C for 100 h in static air by thermogravimetry, SEM, XRD and EPMA. The bare K447A alloy suffered severe oxidation at 1000 degrees C, and the TGO was found to be composited of an outer layer of mixtures of NiCr2O4, CoAl2O4 and rutile TiO2, and an inner alpha-Al2O3 layer. The potassium silicate coating without filler showed local damages where formation and rapid rupture of bubbles occurred and consequently the local substrate was oxidized. The SiO2 powder in the coatings is more capable of reducing O diffusion thru the coatings than the Ti powder, while the latter is more effective in getting rid of bubble rupture than the former. Thus, the coating modified by 10 wt% Ti and 20 wt% SiO2 showed the best protective performance. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001357002000001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhu, Shenglong |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.State Grid Smart Grid Res Inst Co Ltd, State Key Lab Adv Power Transmiss Technol, Beijing 102209, Peoples R China 4.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China 5.Jiangsu JITRI Rd Engn Technol & Equipment Res Inst, Xuzhou 220005, Peoples R China 6.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Yao,Chen, Zheng,Lu, Yiliang,et al. Protection behavior of Ti-SiO2 modified potassium silicate coating on K447a alloy at 1000 ° C[J]. CERAMICS INTERNATIONAL,2024,50(23):49552-49567. |
| APA | Du, Yao.,Chen, Zheng.,Lu, Yiliang.,Yang, Lanlan.,Wang, Cheng.,...&Wang, Fuhui.(2024).Protection behavior of Ti-SiO2 modified potassium silicate coating on K447a alloy at 1000 ° C.CERAMICS INTERNATIONAL,50(23),49552-49567. |
| MLA | Du, Yao,et al."Protection behavior of Ti-SiO2 modified potassium silicate coating on K447a alloy at 1000 ° C".CERAMICS INTERNATIONAL 50.23(2024):49552-49567. |
入库方式： OAI收割
来源：金属研究所
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