Spark plasma sintering of silicon(oxy-)nitride/boron nitride composites and their subsequent thermo-physical properties

IF 2.9 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics Pub Date : 2024-07-14 DOI:10.1016/j.oceram.2024.100644

Mickael Coëffe Desvaux , Andréas Flaureau , Nicolas Pradeilles , Olivier Rapaud , Sophie Beaudet Savignat , Alexandre Maître

{"title":"Spark plasma sintering of silicon(oxy-)nitride/boron nitride composites and their subsequent thermo-physical properties","authors":"Mickael Coëffe Desvaux , Andréas Flaureau , Nicolas Pradeilles , Olivier Rapaud , Sophie Beaudet Savignat , Alexandre Maître","doi":"10.1016/j.oceram.2024.100644","DOIUrl":null,"url":null,"abstract":"<div>Silicon nitride and boron nitride (Si3N4/h-BN) based ceramic composites were prepared by Spark Plasma Sintering (SPS) using aluminium oxide (Al2O3) and/or yttrium oxide (Y2O3) as sintering additives. The amount of h-BN introduced varied from 0 vol.% to 20 vol.% in order to study its influence on ceramic properties. In the same way, the amount of oxide additives has been controlled and the influence of the additive's nature on the final properties has been underlined. The sintering temperature has been selected in order to obtain equivalent relative densities. The formation of β-SiAlON has been underlined by XRD and TEM analysis. Moreover, due to the fast-sintering process, amorphous secondary phase has been formed. Mechanical properties (hardness, fracture toughness, Young modulus) and thermal diffusivity have been evaluated. It appears that the nature of the oxide additive used plays an important role on the mechanical and thermal behaviour of Si3N4/h-BN composites.</div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"19 ","pages":"Article 100644"},"PeriodicalIF":2.9000,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666539524001081/pdfft?md5=cf640340a5c66d1beb4cd353ce694e7f&pid=1-s2.0-S2666539524001081-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Open Ceramics","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666539524001081","RegionNum":0,"RegionCategory":null,"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

Silicon nitride and boron nitride (Si₃N₄/h-BN) based ceramic composites were prepared by Spark Plasma Sintering (SPS) using aluminium oxide (Al₂O₃) and/or yttrium oxide (Y₂O₃) as sintering additives. The amount of h-BN introduced varied from 0 vol.% to 20 vol.% in order to study its influence on ceramic properties. In the same way, the amount of oxide additives has been controlled and the influence of the additive's nature on the final properties has been underlined. The sintering temperature has been selected in order to obtain equivalent relative densities. The formation of β-SiAlON has been underlined by XRD and TEM analysis. Moreover, due to the fast-sintering process, amorphous secondary phase has been formed. Mechanical properties (hardness, fracture toughness, Young modulus) and thermal diffusivity have been evaluated. It appears that the nature of the oxide additive used plays an important role on the mechanical and thermal behaviour of Si₃N₄/h-BN composites.

Abstract Image

查看原文本刊更多论文

氮化硅（氧）/氮化硼复合材料的火花等离子烧结及其后续热物理特性

使用氧化铝（Al2O3）和/或氧化钇（Y2O3）作为烧结添加剂，通过火花等离子烧结法（SPS）制备了氮化硅和氮化硼（Si3N4/h-BN）基陶瓷复合材料。为了研究 h-BN 对陶瓷性能的影响，h-BN 的引入量从 0vol.% 到 20vol.% 不等。同样，还控制了氧化物添加剂的用量，并强调了添加剂的性质对最终特性的影响。烧结温度的选择是为了获得等效的相对密度。通过 XRD 和 TEM 分析，强调了 β-SiAlON 的形成。此外，由于烧结过程较快，还形成了无定形的第二相。对机械性能（硬度、断裂韧性、杨氏模量）和热扩散率进行了评估。由此看来，所使用的氧化物添加剂的性质对 Si3N4/h-BN 复合材料的机械和热性能起着重要作用。

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

Open Ceramics Materials Science-Materials Chemistry

CiteScore

4.20

自引率

0.00%

发文量

102

审稿时长

67 days