Basınçsız ve Spark Plazma Sinterlenmiş Si3N4 Kompozitlerin Özelliklerine SiC’ün Etkisi

Year 2019, Volume: 12 Issue: 2, 568 - 575, 31.08.2019

Zeynep Taşlıçukur Öztürk Cem Şahin Nilgün Kuşkonmaz

https://doi.org/10.18185/erzifbed.442681

Cited By: 1

Abstract

SiC partikülleri matriks içine farklı ağırlık
oranlarında katılarak Si₃N₄-SiC kompozit hazırlanmıştır.
Numuneler iki farklı yöntem ile sinterlenmiştir. Numunelere basınçsıs
sinterleme ve spark plazma sinterleme yöntemleri uygulanmıştır. Birinci
yöntemde, kompozitleri preslemede soğuk izostatik metodu kullanılmıştır.
Numuneler 1850 ⁰C’de azot atmosferi altında 1 saat basınçsız olarak
sinterlenmiştir. İkinci yöntemde, numuneler azot atmosferi altında 1650 ⁰C’de
5 dakika spark plazma ile sinterlenmiştir. AlN and Y₂O₃
sinterlemeye yardımcı olması için katılmıştır. SiC partiküllerinin Si₃N₄
matrisine eklenmesi, sinterlenmiş numunelerin yoğunluk ve mikroyapı
özelliklerinin kontrol edilmesinde kritik rol oynar. Bileşim ve mikroyapının,
sinterlenmiş numunelerin özelliklerine etkisi analiz edilmiştir.

Keywords

Silisyum Nitrür, silisyum karbür, soğuk izostatik pres, sinterleme

Effect of SiC on the Properties of Pressureless and Spark Plasma Sintered Si3N4 Composites

Abstract

Si₃N₄-SiC composites were prepared by adding SiC particles to the matrix in different weight
ratios.The samples were sintered with two different methods. The samples were
produced by pressureless sintering and spark plasma sintering method. In the
first method, cold isostatic pressing method was used to press the composites.
The samples were pressureless sintered at 1850 ⁰C for 1 hour under
the nitrogen atmosphere. In the second method, the samples were spark plasma
sintered at 1650 ⁰C under nitrogen atmosphere under 40 MPa for 5
minutes. AlN and Y₂O₃ were also added to Si₃N₄-SiC
composite mixture to aid sintering. Addition of SiC particles to the Si₃N₄
matrix play critical role in controlling of densificication and
microstructure properties of the sintered samples. The effect of composition
and microstructure on properties of sintered samples was analyzed.

Keywords

Silicon nitride, silicon carbide, cold isostatic press, sintering

References

• Asit K.G., Jae-Kil H., Hee-Dong J., Byong-Taek, L.(2006).″Fabrication of Continuously Porous SiC–Si3N4 Composite Using SiC Powder by Extrusion Process″, Journal of the European Ceramic Society,(26), 2467–2473.
• Baloj, M., Keckes, J., Schöbel, T., Galusek, D. (2007).″Nano/macro-hardness and Fracture Resistance of Si3N4/SiC Composites with up to 13 wt% of SiC Nanoparticles″, Journal of the European Ceramic Society, (27), 2145-2152.
• Hegedusova, L., Kašiarova, M., Dusza, J.,Hnatko ,M., Šajgalik,P.(2009).″Mechanical Properties of Carbon-Derived Si3N4+SiC Micro/Nano-composite″, International Journal of Refractory Metals & Hard Materials,(27), 438–442.
• Jianfeng, W., Yaxiangi, Z., Xiaohong X., Xinbin L. (2016). ″Fabrication and properties of in-situ mullite-bonded Si3N4/SiC composites for solar heat absorber″, Materials Science and Engineering A,(652), 271-278.
• Jun, L., Wenjie, Y., Chengji, D., Hongxi, Z. (2013). ″Effect of Different Sintering Additives on the Reaction-bonded Si3N4/SiC Composite Ceramics″, Advanced Materials Research,(634-638), 2349-2353.
• Jyothi, S., Leon, L.S.(2014). ″Liquid phase sintering of Si3N4/SiC Nano Powders Derived from Silica Fume″, Ceramics International,7(40), 9179–9187.
• Lojanova, S., Tatarko, P.,Chlup, Z., Hnatko, M., Dusza, J., Lences, Z., Sajgalik,P. (2010).″Rare Earth Element Doped Si3N4/SiC Micro/Nano-composites-RT and HT Mechanical Properties″, Journal of the European Ceramic Society,(30), 1931-1944.
• Ravindra,R., Rıfat, F., Rita, K., Veena, S.(2015).″Synthesis of Si3N4/SiC Nanocomposites by Using Automotive Waste Tyres″, Journal of Industrial and Engineering Chemistry, (29), 35-38.
• Rice, R.W.(1998). ″Porosity of Ceramics″, Marcel Dekker Inc, New York.
• Taslicukur,Z.,Sahin,C.F., Kuskonmaz, N., ″Fabrication of Si3N4-SiC Composites by In-Situ Carbothermal Reduction Process", 16.Uluslararası Metalurji ve Malzeme Kongresi, Istanbul, 2012.
• Taslicukur,Z.,Sahin,C.F.,Kuskonmaz,N.(2012).″Properties of Si3N4/SiC Composites Produced via Spark Plasma Sintering″, International Journal of Materials Research, 103(11), 1337-1339.
• Tatarko, P., Kasiorava, M., Chlup, Z., Dusza, J., Sajgalik, P., Vavra, I. (2013). ″Influence of Rare-earth Oxide Additives and SiC Nano Particles on the Wear Behavior of Si3N4-based Composites at Temperatures up to 900 0C″, Wear, (300), 155-162.
• Ting, G., Harbo, J., Yuan-Hua, L.(2012). ″Preparation of SiC/Si3N4 Composites with Rod-like Microstructure by Combustion Synthesis″, Powder Technology, (224), 410-414.
• Yusen, D., Jingxian, Z., Xiaoguang, L., Ying, S., Jianjun, X., Dongliang, J.(2018).″Low Temperature Pressureless Sintering of Silicon Nitride Ceramics for Circuit Substrates in Powder Electronic Devices″, Ceramics International, (44), 4375–4380.