温度对SPS烧结B_4C-SiC复相陶瓷力学性能的影响
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摘要
以B_4C-20%SiC复相陶瓷为研究材料,通过SPS烧结方式烧结制备B4C-20%SiC复相陶瓷,研究烧结温度对其力学性能的影响。结果表明:样品的致密度和力学性能随温度的升高而增加,在1 950～2 000℃样品的致密化最明显,硬度和断裂韧性也迅速提升;当温度高于2 000℃时,样品基本致密,力学性能也不再发生明显变化。因此,在2 000℃下烧结可得到性能优异的B_4C-SiC复相陶瓷,其相对密度为96.34%,硬度为32.44HV,断裂韧性为4.78 MPa·m~(1/2)。
B_4C?mechanical properties of B_4C?properties of the composite ceramics are improved with the increase of temperature. Densification and mechanical properties are rapidly accomplished at 1 950 ℃ to 2 000 ℃. When the temperature exceeds 2 000 ℃,the sample is almost densified,and the mechanical properties have no obvious change. Therefore,B_4C?SiC composite ceramics with excellent properties can be prepared at 2 000 ℃96.34%,32.44 HV and 4.78 MPa·m~(1/2),respectively.
B_4C?mechanical properties of B_4C?properties of the composite ceramics are improved with the increase of temperature. Densification and mechanical properties are rapidly accomplished at 1 950 ℃ to 2 000 ℃. When the temperature exceeds 2 000 ℃,the sample is almost densified,and the mechanical properties have no obvious change. Therefore,B_4C?SiC composite ceramics with excellent properties can be prepared at 2 000 ℃96.34%,32.44 HV and 4.78 MPa·m~(1/2),respectively.
引文
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[16]MOSHTAGHIOUN B M,CUMBRERA F L,ORTIZ A L,et al.Additive-free superhard B4C with ultrafine-grained dense microstructures[J].Journal of European Ceramic,2014,34(2):841-848.
[17]ZHANG X,ZHANG Z,WANG W,et al.Densification behavior and mechanical properties of B4C-SiC intergranular/intragranular nanocomposites fabricated through spark plasma sintering assisted by mechanochemistry[J].Ceramics Interna‐tional,2017,43(2):1904-1910.
[2]ZORZI J E,PEROTTONI C A,JORNADA JAHD.Hardness and wear resistance of B4C ceramics prepared with several additives[J].Materials Letters,2005,59(23):2932-2935.
[3]MATCHEN B.Applications of ceramics in armor products[J].Key Engineering Materials,1996,122:333-342.
[4]LUNDBERG P,LUNDBERG B.Transition between interface defeat and penetration for tungsten projectiles and four silicon carbide materials[J].International Journal of Impact Engineering,2005,31(7):781-792.
[5]LUNDBERG P,RENSTR?M R,LUNDBERG B.Impact of metallic projectiles on ceramic targets:transition between interface defeat and penetration[J].Journal of Impact Engineering,2000,24(3):259-275.
[6]王岭,陈大明,张虎,等.SPS制备致密碳化硼陶瓷的结构及性能[J].稀有金属材料与工程,2009(S2):529-532.
[7]陈刚,章嵩,王传斌,等.碳化硼陶瓷的放电等离子烧结及其力学性能[J].人工晶体学报,2009(1):165-169.
[8]GHOSH D,SUBHASH G,SUDARSHAN T S,et al.Dynamic indentation response of fine-grained boron carbide[J].Journal of American Ceramic Soc,2007,90(6):1850-1857.
[9]HAYUN S,PARIS V,DARIEL M P,et al.Static and dynamic mechanical properties of boron carbide processed by spark plasma sintering[J].Journal of European Ceramic Soc,2009,29(16):3395-3400.
[10]KIM K H,CHAE J H,PARK J S,et al.Sintering behavior and mechanical properties of B4C ceramics fabricated by spark plasma sintering[J].Journal of Ceramic Processing Research,2009,10(6):716-720.
[11]HAYUN S,KALABUKHOV S,EZERSKY V,et al.Microstructural characterization of spark plasma sintered boron carbide ceramics[J].Ceramics International,2010,36(2):451-457.
[12]SAHIN Filiz Cinar,APAK Burcu,AKIN Ipek,et al.Spark plasma sintering of B4C-SiC composites[J].Journal of Solid State Sciences,2012,14:1660-1663.
[13]MALMAL MOSHTAGHIOUN B,ORTIZ A L,GóMEZ-GARCíA D,et al.Toughening of super-hard ultra-fine grained B4C densified by spark-plasma sintering via SiC addition[J].Journal of the European Ceramic Society,2013,33(8):1395-1401.
[14]SHI Xiaolei,ZHANG Gong,TAN Yi,et al.Preparation and properties of B4C-SiC composite ceramics[J].Materials for Mechanical Engineering,2009,33(12):77-80.
[15]YIN Bangyue,WANG Lingsen,FANG Yanchu.Preparation and sintering of ultrafine B4C powders[J].Journal of Inorganic Materials,2002,17(2):343-348.
[16]MOSHTAGHIOUN B M,CUMBRERA F L,ORTIZ A L,et al.Additive-free superhard B4C with ultrafine-grained dense microstructures[J].Journal of European Ceramic,2014,34(2):841-848.
[17]ZHANG X,ZHANG Z,WANG W,et al.Densification behavior and mechanical properties of B4C-SiC intergranular/intragranular nanocomposites fabricated through spark plasma sintering assisted by mechanochemistry[J].Ceramics Interna‐tional,2017,43(2):1904-1910.