Oxidation behavior of monolithic boron containing SiC/(Hf0.5Ti0.5)C/C composites consolidated by SPS

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-06-06 DOI:10.1016/j.jeurceramsoc.2025.117607

Laura Feldmann , Yuyu Zhang , Xuemeng Zhang , Jia Sun , Ralf Riedel

{"title":"Oxidation behavior of monolithic boron containing SiC/(Hf0.5Ti0.5)C/C composites consolidated by SPS","authors":"Laura Feldmann , Yuyu Zhang , Xuemeng Zhang , Jia Sun , Ralf Riedel","doi":"10.1016/j.jeurceramsoc.2025.117607","DOIUrl":null,"url":null,"abstract":"<div><div>In the present study, the mechanical properties and the oxidation behavior of a SiC/(Hf<sub>0.5</sub>Ti<sub>0.5</sub>)C/C composite with and without boron addition are investigated. For the preparation of the monoliths, preceramic polymers are synthesized by single-source-precursor, and subsequently pyrolyzed. The resulting ceramic powders are consolidated by spark plasma sintering at 2200 °C to obtain dense pellets. The chemical modification of the single-source-precursor with a small amount of boron (about 0.16 wt%) leads to ceramic pellets with a more homogeneous microstructure. The hardness and the elastic modulus of dense SiC/(Hf<sub>0.5</sub>Ti<sub>0.5</sub>)C/C composites were found to be 27 and 336 GPa, respectively. The boron containing SiC/(Hf<sub>0.5</sub>Ti<sub>0.5</sub>)C/(B)C samples exhibited a hardness of 24 GPa and an elastic modulus of 299 GPa. Furthermore, the oxidation behavior was investigated via simultaneous thermal analysis up to 1500 °C for 20 h. The boron containing (Hf,Ti)C/SiC monoliths show about 20 % lower oxidation rates upon oxidation at 1400 °C.</div></div>","PeriodicalId":17408,"journal":{"name":"Journal of The European Ceramic Society","volume":"45 15","pages":"Article 117607"},"PeriodicalIF":6.2000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The European Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0955221925004273","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

In the present study, the mechanical properties and the oxidation behavior of a SiC/(Hf_0.5Ti_0.5)C/C composite with and without boron addition are investigated. For the preparation of the monoliths, preceramic polymers are synthesized by single-source-precursor, and subsequently pyrolyzed. The resulting ceramic powders are consolidated by spark plasma sintering at 2200 °C to obtain dense pellets. The chemical modification of the single-source-precursor with a small amount of boron (about 0.16 wt%) leads to ceramic pellets with a more homogeneous microstructure. The hardness and the elastic modulus of dense SiC/(Hf_0.5Ti_0.5)C/C composites were found to be 27 and 336 GPa, respectively. The boron containing SiC/(Hf_0.5Ti_0.5)C/(B)C samples exhibited a hardness of 24 GPa and an elastic modulus of 299 GPa. Furthermore, the oxidation behavior was investigated via simultaneous thermal analysis up to 1500 °C for 20 h. The boron containing (Hf,Ti)C/SiC monoliths show about 20 % lower oxidation rates upon oxidation at 1400 °C.

查看原文本刊更多论文

SPS固结整体含硼SiC/(Hf0.5Ti0.5)C/C复合材料的氧化行为

研究了SiC/(Hf0.5Ti0.5)C/C复合材料在加硼和不加硼的情况下的力学性能和氧化行为。为了制备整体体，采用单源前驱体合成预陶瓷聚合物，然后进行热解。所得到的陶瓷粉末在2200℃下通过火花等离子烧结得到致密的球团。用少量硼（约0.16 wt%）对单源前驱体进行化学改性，使陶瓷球团具有更均匀的微观结构。致密SiC/(Hf0.5Ti0.5)C/C复合材料的硬度和弹性模量分别为27和336 GPa。含硼SiC/(Hf0.5Ti0.5)C/(B)C试样的硬度为24 GPa，弹性模量为299 GPa。此外，通过同时热分析，研究了氧化行为高达1500°C， 20 h。在1400℃氧化时，含硼（Hf,Ti）C/SiC整体体的氧化速率降低约20% %。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.