Microstructure and Strength of SiC Ceramic Joints Diffusion Bonded by Spark Plasma Sintering with the SiC-Al2O3-Y2O3 Interlayer

WANG Yafeng; WEI Lianfeng; YANG Fuquan; LI Huaxin; DONG Yu; ZHENG Yong; HE Yanming; YANG Jianguo

doi:10.7512/j.issn.1001-2303.2023.12.01

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Microstructure and Strength of SiC Ceramic Joints Diffusion Bonded by Spark Plasma Sintering with the SiC-Al₂O₃-Y₂O₃ Interlayer
Vol. 53, Issue 12, Pages: 1-6(2023)
DOI： 10.7512/j.issn.1001-2303.2023.12.01

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王亚峰，魏连峰，杨富荃，等.SiC-Al₂O₃-Y₂O₃中间层放电等离子扩散连接SiC陶瓷的接头组织与强度［J］.电焊机，2023，53（12）：1-6.

WANG Yafeng, WEI Lianfeng, YANG Fuquan, et al.Microstructure and Strength of SiC Ceramic Joints Diffusion Bonded by Spark Plasma Sintering with the SiC-Al₂O₃-Y₂O₃ Interlayer[J].Electric Welding Machine, 2023, 53(12): 1-6.
王亚峰，魏连峰，杨富荃，等.SiC-Al₂O₃-Y₂O₃中间层放电等离子扩散连接SiC陶瓷的接头组织与强度［J］.电焊机，2023，53（12）：1-6. DOI： 10.7512/j.issn.1001-2303.2023.12.01.

WANG Yafeng, WEI Lianfeng, YANG Fuquan, et al.Microstructure and Strength of SiC Ceramic Joints Diffusion Bonded by Spark Plasma Sintering with the SiC-Al₂O₃-Y₂O₃ Interlayer[J].Electric Welding Machine, 2023, 53(12): 1-6. DOI： 10.7512/j.issn.1001-2303.2023.12.01.

摘要

采用无压烧结SiC作为母材，SiC基SiC-Al,2,O,3,-Y,2,O,3,粉末作为中间层，使用放电等离子扩散连接SiC陶瓷。通过金相显微镜、扫描电子显微镜、能谱仪、电子背散射衍射分析、剪切试验等手段对SiC接头的微观组织和力学性能进行了表征评价。微观组织表征结果表明，SiC接头界面结合质量较高，各个位置中间层厚度均匀。接头的主要相组成为β-SiC和Y-Al-Si-O-C，中间层SiC为细小的β-SiC晶粒，母材与中间层处晶粒没有表现出明显的择优取向。由于放电等离子扩散连接的快速连接过程，接头处未发生明显的β→α相变。同时，由于接头为近同质SiC接头，界面处未出现明显应力集中。通过剪切试验，对比不同温度热处理前后的接头剪切强度。SiC接头的初始室温剪切强度为219.9 MPa，在经过800 ºC/2 h的空气中热处理后接头强度升至320.8 MPa，进一步提高热处理温度至1 300 ºC，接头强度升至389.1 MPa，接头断裂主要发生在母材，断口呈现河流状花样，为脆性断裂。接头强度的上升归因于热处理过程中产生的SiO,2,与Y-Al-Si-O-C的交互作用愈合了中间层两侧母材中存在的微裂纹等缺陷。

Abstract

In this study, the pressureless-sintered SiC and SiC-based powder (SiC-Al,2,O,3,-Y,2,O,3,) were used as the substrate and interlayer, respectively, for joining of SiC ceramics by spark plasmas sintering. The microstructure and strength of SiC joints were investigated by means of metalloscope, scanning electron microscopy, energy spectroscopy, electron backscatter diffraction and shear test. The microstructural characterization indicated that the SiC joint exhibited a high-quality interface bonding with uniform thickness in the interlayer. The main phase compositions of the joint were β-SiC and Y-Al-Si-O-C. The fine β-SiC grains in the interlayer exhibited a random orientation. No significant β→α phase transition occurred at the joint due to the fast process of diffusion bonding by spark plasma sintering. Meanwhile, no significant stress concentration was observed at the interface because of the near-homogeneous SiC joint formed. The initial room temperature shear strength of the SiC joint was 219.9 MPa, which increased to 320.8 MPa after heat treatment in air at 800 ºC for 2 h. Further increasing the heat treatment temperature to 1300 ºC, the joint strength increased to 389.1 MPa. The joint fracture occurred mainly at the substrate with a river-like pattern, as a representative of brittle fracture. The increase of joint strength may be attributed to the interaction of Y-Al-Si-O-C and SiO,2, produced during the heat treatment process, healing the defects presented in the SiC substrate such as microcracks.

关键词

碳化硅放电等离子扩散连接微观组织剪切强度

Keywords

silicon carbidediffusion bonding by spark plasma sinteringmicrostructureshear strength

references

刘万理. SiC及其复合材料的制备和光催化性能研究［D］. 山东：山东大学，2021.

LIU W L. Study on Preparation and Pbotocatalytic Performance of SiC and Its composites［D］. Shandong： Shandong University，2021.

徐彬，杨会永，罗瑞盈，等. 连续纤维增强SiC基复合材料界面相力学及抗氧化改性研究进展［J］. 航空动力学报，2023（4）：921-930.

XU B，YANG H Y，LUO R Y，et al. Research progress in interfacial phase mechanics and oxidation resistance modification of continuous reinforced SiC matrix composites［J］. Journal of Aerospace Power， 2023（4）：921-930.

穆阳. SiCf/SiC高温结构吸波复合材料的制备及性能研究［D］. 陕西：西北工业大学大学， 2016.

MU Y. Preparation and Properties of SiCf/SiC High-temperature Structural Microwave Absorbing Composites［D］. Shanxi： Northwestern Polytechnical University， 2016.

刘巧沐，黄顺洲，何爱杰. 碳化硅陶瓷基复合材料在航空发动机上的应用需求及挑战［J］. 材料工程， 2019， 47（02）： 1-10.

LIU Q M，HUANG S Z，HE A J. Application requirements and challenges of CMC-SiC composites on aero-engine［J］. Journal of Materials Engineering， 2019， 47（2）： 1-10.

祁桥桥. 异质界面SiC设计及其抗辐照性能研究［D］. 河南：郑州大学， 2021.

QI Q Q. Radiation Resistance of SiC with Hetero-interfaces［D］. Henan： Zhengzhou University， 2021.

欧阳琴，王艳菲，徐剑，等. 核用碳化硅纤维增强碳化硅复合材料研究进展［J］. 无机材料学报， 2022， 37（08）： 821-840.

OUYANG Q，WANG Y F，XU J，et al. Research Progress of SiC Fiber Reinforced SiC Composites for Nuclear Application［J］. Journal of Inorganic Materials， 2022， 37（08）： 821-840.

徐晓卫，李宁，刘自豪，等. 碳化硅陶瓷连接技术研究现状［J］. 电焊机， 2022， 52（8）： 10-19.

XU X W，LI N，LIU Z H，et al. Research Status of Joining Technology for SiC Ceramic［J］. Electric Welding Machine， 2022， 52（8）： 10-19.

Rossi G， Pelletier J. Joining of SiC parts by polishing and hipping： US4925608A［P］. 1988-09-27.

Jung Y， Kim S， Kim H， et al. Microstructures of diffusion bonded SiC ceramics using Ti and Mo interlayers［J］. Journal of Nuclear Materials， 2013， 441（1-3）： 510-513.

Matheny R，Corelli J，Trantina G. Radiation damage in silicon carbide and graphite for fusion reactor first wall applications［J］. Journal of Nuclear Materials， 1979， 83（2）： 313-321.

Dong H，Li S.Teng Y，et al. Joining of SiC ceramic-based materials with ternary carbide Ti3SiC2［J］. Materials Science and Engineering B-Advanced Functional Solid-State Materials， 2011， 176（1）： 60-64.

Chaumat G，Drevet B，Vernier L.Reactive brazing study of a silicon nitride to metal joining［J］. Journal of the European Ceramic Society，1997，17（15-16）：1925-1927.

Wang X， Wang J， Wang H. Joining of SiC ceramics via a novel liquid preceramic polymer （V-PMS）［J］. Ceramics International， 2015， 41（6）： 7283-7288.

Porter D， Pascucci M， Olbert B. Neutron irradiation effects on SiO2and SiO2-based glass ceramics［J］. Journal of Nuclear Materials， 1982， 103（1-3）： 767-72.

Koyanagi T， Ozawa K， Hinoki T， et al. Effects of neutron irradiation on mechanical properties of silicon carbide composites fabricated by nano-infiltration and transient eutectic-phase precess［J］. Journal of Nuclear Materials， 2014， 448（1-3）： 478-486.

Sha J， Nozawa T， Park J， et al. Effect of heat treatment on the tensile strength and creep resistance of advanced SiC fibers［J］. Journal of Nuclear Materials， 2004， 329： 592-596.

Rizzo S，Grasso S，Salvo M，et al. Joining of C/SiC composites by spark plasma sintering technique［J］.Journal of the European Ceramic Society，2014，34（4）： 903-913.

Zhang N， Ru H， Cai Q， et al. The influence of the molar ratio of Al2O3 to Y2O3 on sintering behavior and the mechanical properties of a SiC-Al2O3-Y2O3 ceramic composite［C］//Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing， 2008， 486（1-2）： 262-266.

Li H， Shen W， Yang F， et al. Microstructural， electrical， and mechanical properties of conductive SiC ceramics fabricated by spark plasma sintering［J］. International Journal of Applied Ceramic Technology， 2022， 19（6）： 3376-3391.

Lee S，Kim Y，Kim C. Microstructural development and mechanical-properties of pressureless-sintered SiC with plate-like grains using Al2O3-Y2O3 additives［J］. Journal of Materials Science，1994，29（20）：5321-5326.

Mohanty D， Sil A， Maiti K. Development of input output relationships for self-healing Al2O3/SiC ceramic composites with Y2O3 additive using design of experiments［J］. Ceramics International， 2011，37（6）：1985-1992.

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