| Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate | |
| Du, Yao1,2; Chen, Zheng1,2; Lu, Yiliang3; Wang, Cheng4; Zhu, Shenglong2; Wang, Fuhui5 | |
| Corresponding Author | Zhu, Shenglong(slzhu@imr.ac.cn) |
| 2023-12-01 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 49Issue:23Pages:37946-37956 |
| Abstract | The potassium silicate coatings cured by calcium hydrogen phosphate (CHP) at 25, 120 and 200 degrees C were investigated using electrochemical impedance spectroscopy, scanning electron microscope, X-ray diffraction, Raman spectra and Silicon-29 nuclear magnetic resonance spectra. The potassium silicate coating cured by 10 wt% CHP at 120 degrees C exhibited ultrahigh low-frequency impedance, represented by Z(0.01), similar to 61 G Omega cm(2), which is 3 orders of magnitude higher than that of the reference coating which was cured by 15 wt% AlPO4 at 120 degrees C. It is revealed that the impedance is strongly dependent on the amounts of micron-sized defects rather than the polymerization degree. The lower density the defects, including those formed during testing, the higher the impedance. The formation of defects which has a significant impact on the adhesion and anti-corrosion properties of the coating is mainly correlated to the curing kinetics. |
| Keyword | Potassium silicate Impedance Structure EIS NMR Raman |
| DOI | 10.1016/j.ceramint.2023.09.124 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:001098931100001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/177430 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhu, Shenglong |
| Affiliation | 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, Peoples R China 4.Jiangsu JITRI Rd Engn Technol & Equipment Res Inst, Xuzhou 220005, Peoples R China 5.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China |
| Recommended Citation GB/T 7714 | Du, Yao,Chen, Zheng,Lu, Yiliang,et al. Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate[J]. CERAMICS INTERNATIONAL,2023,49(23):37946-37956. |
| APA | Du, Yao,Chen, Zheng,Lu, Yiliang,Wang, Cheng,Zhu, Shenglong,&Wang, Fuhui.(2023).Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate.CERAMICS INTERNATIONAL,49(23),37946-37956. |
| MLA | Du, Yao,et al."Ultrahigh impedance of potassium silicate coatings hardened by calcium hydrogen phosphate".CERAMICS INTERNATIONAL 49.23(2023):37946-37956. |
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