دورية أكاديمية
High speed laser cladding as a new approach to prepare ultra-high temperature ceramic coatings
| العنوان: | High speed laser cladding as a new approach to prepare ultra-high temperature ceramic coatings |
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| المؤلفون: | Qiyao Deng, Pengfei He, Chuan Sun, Yang Li, Yue Xing, Yujie Wang, Jinglong Li, Xiubing Liang, Xin Wang, Yujie Zhou, Yujun Cai |
| المصدر: | Journal of Advanced Ceramics, Vol 13, Iss 2, Pp 143-154 (2024) |
| بيانات النشر: | Tsinghua University Press, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Clay industries. Ceramics. Glass |
| مصطلحات موضوعية: | high speed laser cladding (hslc), ultra-high temperature ceramic (uhtc), thermal protection coating, microstructure, mechanical properties, Clay industries. Ceramics. Glass, TP785-869 |
| الوصف: | Ultra-high temperature ceramic (UHTC) coatings are used to protect the hot-end components of hypervelocity aerocrafts from thermal ablation. This study provides a new approach to fabricate UHTC coatings with high speed laser cladding (HSLC) technology, and places more emphasis on investigating the formation mechanism, phase compositions, and mechanical properties of HSLC-UHTC coatings. Results show that a well-bonded interface between the coating and the tantalum alloy substrate can be formed. The coating is mainly composed of (Zr,Ta)C ceramic solid solution phase with a content of higher than 90% by volume and Ta(W) metal solid solution phase. At a relatively high powder feeding rate, the ZrC ceramic phase appears in the coating while a dense ZrC UHTC top layer with a thickness of up to ~50 μm is successfully fabricated. As for the mechanical properties of the HSLC coatings, the fracture toughness of the coating decreases with the increase of powder feeding rate. The increase of carbide solid solution phase can significantly improve the high temperature microhardness (552.7±1.8 HV0.5@1000 ℃). The innovative design of HSLC ZrC-based coatings on refractory alloys accomplishes continuous transitions on microstructure and properties from the substrate to the UHTC top layer, which is a very promising candidate scheme for thermal protection coating. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2226-4108 2227-8508 |
| Relation: | https://www.sciopen.com/article/10.26599/JAC.2024.9220827; https://doaj.org/toc/2226-4108; https://doaj.org/toc/2227-8508 |
| DOI: | 10.26599/JAC.2024.9220827 |
| URL الوصول: | https://doaj.org/article/58fb39e43d0f4dc8884d231757056a54 |
| رقم الأكسشن: | edsdoj.58fb39e43d0f4dc8884d231757056a54 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 22264108 22278508 |
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| DOI: | 10.26599/JAC.2024.9220827 |