纳米SiC颗粒增强反应结合碳化硼陶瓷复合材料的研究
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摘要
采用真空熔渗法,通过对B_4C-C素坯于1550℃渗Si,得到了较致密的反应结合碳化硼陶瓷复合材料。通过生成Si C纳米颗粒对材料进行强化,并探讨了纳米Si C颗粒对材料组织与性能的影响及其强韧化机理。实验表明,材料包括B_4C、Si、Si C和B_(12)(C,Si,B)_3四相。结果表明,选取酚醛树脂作为外加碳源,可在材料中成功引入细小的Si C纳米颗粒,使复合材料的抗折强度、断裂韧性和维氏硬度较以炭黑为外加碳源的材料,分别增加了35%、36%和15%,分别高达442 MPa、4.9 MPa·m~(1/2)和23 GPa。
Reaction bonded boron carbide(RBBC) composites were fabricated based on a molten Si infiltration method. The mechanical properties of the composites were improved by the reaction formed silicon carbide(SiC) nano-particulates. The role of SiC nano-particulates in the microstructure, density and mechanical properties of RBBC composites, and the strengthening mechanism were researched. The XRD results show that the composites consist of four phases, namely, B_4 C, Si, reaction formed SiC and ternary phase B_(12)(C, Si, B)_3. The SiC nano-particulates were introduced into the RBBC composites using phenolic resin as carbon sources. The bending strength, fracture toughness and Vickers-hardness of the RBBC composites fabricated with phenolic resin as carbon sources are 442 MPa, 4.9 MPa·m~(1/2) and 23 GPa, which increase by 35%, 36% and 15%, respectively, compared with those of RBBC composites fabricated with black carbon as carbon sources. Clearly, an introduction of the nano-sized SiC particles to RBBC composites is responsible for the increase in the mechanical properties of the composites.
Reaction bonded boron carbide(RBBC) composites were fabricated based on a molten Si infiltration method. The mechanical properties of the composites were improved by the reaction formed silicon carbide(SiC) nano-particulates. The role of SiC nano-particulates in the microstructure, density and mechanical properties of RBBC composites, and the strengthening mechanism were researched. The XRD results show that the composites consist of four phases, namely, B_4 C, Si, reaction formed SiC and ternary phase B_(12)(C, Si, B)_3. The SiC nano-particulates were introduced into the RBBC composites using phenolic resin as carbon sources. The bending strength, fracture toughness and Vickers-hardness of the RBBC composites fabricated with phenolic resin as carbon sources are 442 MPa, 4.9 MPa·m~(1/2) and 23 GPa, which increase by 35%, 36% and 15%, respectively, compared with those of RBBC composites fabricated with black carbon as carbon sources. Clearly, an introduction of the nano-sized SiC particles to RBBC composites is responsible for the increase in the mechanical properties of the composites.
引文
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[3]Moshtaghioun B M,García D G,Domínguez-Rodríguez A.Journal of the European Ceramic Society[J],2016,36(5):1127
[4]He R J,Zhou Z L,Qu Z L et al.International Journal of Refractory Metals and Hard Materials[J],2016,57:125
[5]Han Wenbo(韩文波),Gao Jiaxing(高家兴),Zhang Jihong(张继红).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2013,42(S1):317
[6]Wang J L,Lin W S,Jiang Z W et al.Ceramics International[J],2014,40(5):6793
[7]Thuault A,Marinel S,Savary E et al.Ceramics International[J],2013,39(2):1215
[8]Barick P,Jana D C,Thiyagarajan N.Ceramics International[J],2013,39(1):763
[9]Lin Q Q,Dong S M,He P et al.Journal of Inorganic Materials[J],2015,30(6):667
[10]Wu H Y,Zhang S C,Gao M X et al.Materials Science and Engineering A[J],2012,551:200
[11]Hayun S,Darie M P,Frage N et al.Acta Materialia[J],2010,58(5):1721
[12]Bao Chonggao(鲍崇高),Song Suocheng(宋索成),Zhao Liming(赵黎明).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(S1):229
[13]Zhang C P,Ru H Q,Wang W et al.Journal of the American Ceramic Society[J],2014,97(10):3286
[14]Zhang Cuiping(张翠萍).Thesis for Doctorate(博士论文)[D].Shenyang:Northeastern University,2010
[15]Wang Y X,Tan S H,Jiang D L.Carbon[J],2004,42(8-9):1833
[16]Xu S J,Qiao G J,Li D C et al.Journal of the European Ceramic Society[J],2009,29(11):2395
[17]Mu Baichun(穆柏春).The Strengthening and Toughening of Ceramics(陶瓷材料的强韧化)[M].Beijing:Metallurgical Industry Press,2002:250
[18]Guo S,Todd R I.Acta Materialia[J],2011,59(7):2637
[19]Kruzic J J,Satet R L,Hoffmann M J et al.Journal of the American Ceramic Society[J],2008,91(6):1986
[20]Chantikul P,Bennison S J,Lawn B R.Journal of the American Ceramic Society[J],1990,73(8):2419
[21]Thevenot F.Journal of the European Ceramic Society[J],1990,6(4):205
[22]Dowling N E.Mechanical Behavior of Materials:Engineering Methods for Deformation,Fracture,and Fatigue[M].Upper Saddle River:Pearson Education Inc,2007:152
[23]Barsoum M W.Fundamentals of Ceramics[M].New York:The Mc Graw-Hill Companies Inc,2002:401
[24]Zimmerman A F,Palumbo G,Aust K T et al.Materials Science and Engineering A[J],2002,328(1-2):137
[25]Wu W W,Zhang G J,Kan Y M et al.Scripta Materialia[J],2007,57(4):317
[26]Callister W D.Materials Science and Engineering:An Introduction[M].New York:John Wiley&Sons Inc,2007:352
[27]Choi S R,Sanders W A,Salem J A et al.Journal of Materials Science Letters[J],1995,14(4):276