碳纤维复合Si_3N_4陶瓷材料的制备及性能研究(英文)
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摘要
为研究碳纤维(Cf)加入量对复合材料性能的影响,本研究以Y2O3为烧结助剂,采用热压烧结技术制备了Cf/Si3N4复合材料,其中碳纤维加入量为0、2wt%和5wt%。选用乙醇作分散介质,通过球磨工艺可有效分散短切碳纤维。研究结果表明:碳纤维在复合材料中分散均匀,且材料中的晶粒在垂直于热压压力的方向呈现一定取向排列。高温烧结过程中,碳纤维与Si3N4或其表面的SiO2层发生反应,生成SiC中间层。适量碳纤维加入有助于提高复合材料的热导性能。当Cf加入量为2wt%时,Cf/Si3N4的热导率较高,为45.8 W/(m K);而不添加Cf的样品,其热导率为37.1 W/(m K)。加入Cf后,Cf/Si3N4的断裂韧性有小幅提高,维氏硬度在16.6~16.8 GPa范围内变化。
To investigate the effects of carbon fiber(Cf) adding content on the properties of Si3N4, Cf/Si3N4 composites with 0, 2wt% and 5wt% of short carbon fibers were prepared by hot-press sintering method, using Y2O3 as sintering additives. With long-time ball milling process, carbon fibers were well dispersed in mixed powders using ethanol as dispersion medium. Carbon fibers distribute uniformly in the composites and Si3N4 grains grow to a certain degree in the vertical direction to the pressure of hot-press. The interfacial by-product silicon carbide(SiC) phase forms due to the reaction between added Cf and Si3N4 particles or SiO2 layer on surface of Si3N4 particles during high temperature sintering. The sample with 2wt% Cf addition achieves a higher value of thermal conductivity(45.8 W/(m K)), while the thermal conductivity of Si3N4 without Cf is only 37.1 W/(m K). Therefore, the addition of Cf can improve the thermal conductivity of the composites. The fracture toughness of the composites has a slight increase with Cf adding. The measured hardness values for all samples are within a range of 16.6–16.8 GPa.
To investigate the effects of carbon fiber(Cf) adding content on the properties of Si3N4, Cf/Si3N4 composites with 0, 2wt% and 5wt% of short carbon fibers were prepared by hot-press sintering method, using Y2O3 as sintering additives. With long-time ball milling process, carbon fibers were well dispersed in mixed powders using ethanol as dispersion medium. Carbon fibers distribute uniformly in the composites and Si3N4 grains grow to a certain degree in the vertical direction to the pressure of hot-press. The interfacial by-product silicon carbide(SiC) phase forms due to the reaction between added Cf and Si3N4 particles or SiO2 layer on surface of Si3N4 particles during high temperature sintering. The sample with 2wt% Cf addition achieves a higher value of thermal conductivity(45.8 W/(m K)), while the thermal conductivity of Si3N4 without Cf is only 37.1 W/(m K). Therefore, the addition of Cf can improve the thermal conductivity of the composites. The fracture toughness of the composites has a slight increase with Cf adding. The measured hardness values for all samples are within a range of 16.6–16.8 GPa.
引文
[1]KRSTIC ZORAN,KRSTIC D.VLADIMIR.Silicon nitride:the engineering material of the future.Journal of Materials Science,2011,47(2):535–552.
[2]WATARI KOJI.High thermal conductivity non-oxide ceramics.Journal of the Ceramic Society of Japan,2001,109(1):S7–S16.
[3]PENG MENG-MENG,NING XIAO-SHAN.Sintering ofβ-Si3N4powder and thermal conductivity of the ceramic.Rare Metal Materials and Engineering,2013,42(1):405–408.
[4]ZHANG YING-WEI,YU JIAN-BO,XIA YONG-FENG,et al.Microstructure and mechanical performance of silicon nitride ceramic with seeds addition.Journal of Inorganic Materials,2012,27(8):807–812.
[5]ZHU XIN-WEN,ZHOU YOU,HIRAO KIYOSHI.Effects of processing method and additive composition on microstructure and thermal conductivity of Si3N4 ceramics.Journal of the European Ceramic Society,2006,26:711–718.
[6]ZHU XIN-WEN,ZHOU YOU,HIRAO KIYOSHI.Post-densificat ion behavior of reaction-bonded silicon nitride(RBSN):effect of various characteristics of RBSN.Journal of Materials Science,2004,39(18):5785–5797.
[7]WARARI KOJI,HIRAO KIYOSHI,BRITO E MANUEL,et al.Hot isostatic pressing to increase thermal conductivity of Si3N4 ceramics.Journal of Materials Research,1998,14(4):1538–1551.
[8]WATARI KOJI,HIRSO KIYOSHI,TORIYAMA MOTOHIRO.Effect of grain size on the thermal conductivity of Si3N4.Journal of the American Ceramic Society,1999,82(3):777–779.
[9]ZHOU YOU,HYUGA HIDEKI,KUSANO DAI,et al.A tough silicon nitride ceramic with high thermal conductivity.Advanced Materials,2011,23(39):4563–4567.
[10]CHOI Stephen U S,ZHANG Z G,YU W,et al.Anomalous thermal conductivity enhancement in nanotube suspensions.Applied Physics Letters,2001,79(14):2252–2254.
[11]HAN SEUNGJIN,CHUNG D D L.Increasing thethrough-thickness thermal conductivity of carbon fiber polymer-matrix composite by curing pressure increase and filler incorporation.Composites Science and Technology,2011,71(16):1944–1952.
[12]BORRELL B,ROCHA V G,TORRECILLAS R,et al.Effect of carbon nanofibers content on thermal properties of ceramic nanocomposites.Journal of Composite Materials,2011,46(10):1229–1234.
[13]YAO DONG-XU,XIA YONG-FENG,ZOU KAI-HUI,et al.Porous Si3N4 ceramics prepared via partial nitridation and SHS.Journal of the European Ceramic Society,2013,33(2):371–374.
[14]YANG JIAN-FENG,ZHANG GUO-JUN,KONDO NAOKI,et al.Synthesis and properties of porous Si3N4/SiC nanocomposites by carbothermal reaction between Si3N4 and carbon.Acta Materialia,2002,50(19):4831–4840.
[15]WANG XIAO-YAN,ZHU DONG-MEI,LI PENG,et al.Behavior of short carbon fibers in Cfiber/Si3N4 composites by hot pressed sintering.Journal of Reinforced Plastics and Composites,2009,28(2):167–173.
[16]MAGNANT J,PAILLER R,PETITCORPS Y L,et al.Fiber-reinforced ceramic matrix composites processed by a hybrid technique based on chemical vapor infiltration,slurry impregnation and spark plasma sintering.Journal of the European Ceramic Society,2013,33(1):181–190.
[17]YANG JIAN-FENG,ZHANG GUO-JUN,KONDO NAOKI,et al.Porous 2H-silicon carbide ceramics fabricated by carbothermal reaction between silicon nitride and carbon.Journal of the American Ceramic Society,2003,86(6):910–914.
[18]CHOI JAE-YOUNG,KIM CHONG-HEE,KIM DO-KYUNG,et al.Carbothermic synthesis of monodispersed spherical Si3N4/SiC nanocomposite powder.Journal of the American Ceramic Society,1999,82(10):2665–2671.
[19]ELIMAT Z M,HUSSAIN W T,ZIHLIF A M.PAN-based carbon fibers/PMMA composites:thermal,dielectric,and DC electrical properties.Journal of Materials Science:Materials in Electronics,2012,23(12):2117–2122.
[20]KUMARI L,ZHANG T,DU G H,et al.Thermal properties of CNT-alumina nanocomposites.Composites Science and Technology,2008,68(9):2178–2183.
[21]BAKSHI SRINIVAS R,BALANI KANTESH,AGARWAL ARVIND.Thermal conductivity of plasma-sprayed aluminum oxide-multiwalled carbon nanotube composites.Journal of the American Ceramic Society,2008,91(3):942–947.
[2]WATARI KOJI.High thermal conductivity non-oxide ceramics.Journal of the Ceramic Society of Japan,2001,109(1):S7–S16.
[3]PENG MENG-MENG,NING XIAO-SHAN.Sintering ofβ-Si3N4powder and thermal conductivity of the ceramic.Rare Metal Materials and Engineering,2013,42(1):405–408.
[4]ZHANG YING-WEI,YU JIAN-BO,XIA YONG-FENG,et al.Microstructure and mechanical performance of silicon nitride ceramic with seeds addition.Journal of Inorganic Materials,2012,27(8):807–812.
[5]ZHU XIN-WEN,ZHOU YOU,HIRAO KIYOSHI.Effects of processing method and additive composition on microstructure and thermal conductivity of Si3N4 ceramics.Journal of the European Ceramic Society,2006,26:711–718.
[6]ZHU XIN-WEN,ZHOU YOU,HIRAO KIYOSHI.Post-densificat ion behavior of reaction-bonded silicon nitride(RBSN):effect of various characteristics of RBSN.Journal of Materials Science,2004,39(18):5785–5797.
[7]WARARI KOJI,HIRAO KIYOSHI,BRITO E MANUEL,et al.Hot isostatic pressing to increase thermal conductivity of Si3N4 ceramics.Journal of Materials Research,1998,14(4):1538–1551.
[8]WATARI KOJI,HIRSO KIYOSHI,TORIYAMA MOTOHIRO.Effect of grain size on the thermal conductivity of Si3N4.Journal of the American Ceramic Society,1999,82(3):777–779.
[9]ZHOU YOU,HYUGA HIDEKI,KUSANO DAI,et al.A tough silicon nitride ceramic with high thermal conductivity.Advanced Materials,2011,23(39):4563–4567.
[10]CHOI Stephen U S,ZHANG Z G,YU W,et al.Anomalous thermal conductivity enhancement in nanotube suspensions.Applied Physics Letters,2001,79(14):2252–2254.
[11]HAN SEUNGJIN,CHUNG D D L.Increasing thethrough-thickness thermal conductivity of carbon fiber polymer-matrix composite by curing pressure increase and filler incorporation.Composites Science and Technology,2011,71(16):1944–1952.
[12]BORRELL B,ROCHA V G,TORRECILLAS R,et al.Effect of carbon nanofibers content on thermal properties of ceramic nanocomposites.Journal of Composite Materials,2011,46(10):1229–1234.
[13]YAO DONG-XU,XIA YONG-FENG,ZOU KAI-HUI,et al.Porous Si3N4 ceramics prepared via partial nitridation and SHS.Journal of the European Ceramic Society,2013,33(2):371–374.
[14]YANG JIAN-FENG,ZHANG GUO-JUN,KONDO NAOKI,et al.Synthesis and properties of porous Si3N4/SiC nanocomposites by carbothermal reaction between Si3N4 and carbon.Acta Materialia,2002,50(19):4831–4840.
[15]WANG XIAO-YAN,ZHU DONG-MEI,LI PENG,et al.Behavior of short carbon fibers in Cfiber/Si3N4 composites by hot pressed sintering.Journal of Reinforced Plastics and Composites,2009,28(2):167–173.
[16]MAGNANT J,PAILLER R,PETITCORPS Y L,et al.Fiber-reinforced ceramic matrix composites processed by a hybrid technique based on chemical vapor infiltration,slurry impregnation and spark plasma sintering.Journal of the European Ceramic Society,2013,33(1):181–190.
[17]YANG JIAN-FENG,ZHANG GUO-JUN,KONDO NAOKI,et al.Porous 2H-silicon carbide ceramics fabricated by carbothermal reaction between silicon nitride and carbon.Journal of the American Ceramic Society,2003,86(6):910–914.
[18]CHOI JAE-YOUNG,KIM CHONG-HEE,KIM DO-KYUNG,et al.Carbothermic synthesis of monodispersed spherical Si3N4/SiC nanocomposite powder.Journal of the American Ceramic Society,1999,82(10):2665–2671.
[19]ELIMAT Z M,HUSSAIN W T,ZIHLIF A M.PAN-based carbon fibers/PMMA composites:thermal,dielectric,and DC electrical properties.Journal of Materials Science:Materials in Electronics,2012,23(12):2117–2122.
[20]KUMARI L,ZHANG T,DU G H,et al.Thermal properties of CNT-alumina nanocomposites.Composites Science and Technology,2008,68(9):2178–2183.
[21]BAKSHI SRINIVAS R,BALANI KANTESH,AGARWAL ARVIND.Thermal conductivity of plasma-sprayed aluminum oxide-multiwalled carbon nanotube composites.Journal of the American Ceramic Society,2008,91(3):942–947.