Preprint

Preprint of "Reaction-driven formation of SiC–ZrC interlayers for high-strength joining of monolithic CVD β-SiC and SiCf/SiC composites"

Zdenek ChlupInstitute of Physics of Materials, CASNaser HosseiniInstitute of Inorganic Chemistry, Slovak Academy of SciencesCarla MalinverniPolytechnic University of TurinAlexandra KovalčíkováInstitute of Materials Research of the Slovak Academy of SciencesCui PengxingZhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaMonika TatarkováInstitute of Inorganic Chemistry, Slovak Academy of SciencesValentina CasalegnoPolytechnic University of TurinZhou XiaobingZhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications, Ningbo Key Laboratory of Special Energy Materials and Chemistry, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, ChinaMilena SalvoPolytechnic University of TurinIvo DlouhýBrno University of TechnologyPeter TatarkoInstitute of Inorganic Chemistry, Slovak Academy of Sciences

Zenodo (CERN European Organization for Nuclear Research)repository2026en

ABI

Abstract

A reliable joining method for monolithic CVD β-SiC and SiCf/SiC composites was developed using an in-situ formed ZrC-SiC interlayer. A ZrSi₂–C powder mixture was employed as the raw material, and joining was performed via field-assisted sintering technique. Initially, the joining conditions were optimised for CVD β-SiC ceramics by varying the interlayer composition (ZrSi₂ and ZrSi₂ + C) and processing temperature (1400 - 1650°C). The joints produced using a non-stoichiometric mixture of raw materials (ZrSi2:C = 1:1.5) at 1600°C exhibited a uniform interlayer and the highest flexural strength (~270 MPa). Furthermore, the joints maintained structural integrity up to 1400°C and retained a flexural strength of 125 MPa at 1500 °C, without decomposition of the ZrC-SiC interlayer. Finally, the optimised joining conditions were successfully applied to SiCf/SiC composites, yielding a shear strength of ~87 MPa, which exceeded that of the reference unjoined materials.

Topics

Advanced ceramic materials synthesis Aluminum Alloys Composites Properties MXene and MAX Phase Materials

Identifiers

DOI: 10.5281/zenodo.19743670

Citations and references

Cited by 00 references

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