以煅烧石油焦、煤沥青、锆粉及硅粉为原料,采用热压工艺制备了一系列掺杂再结晶石墨.研究了掺杂组元对再结晶石墨的热导率、电阻率和抗弯强度的影响以及微观结构的变化.结果表明,掺杂锆使再结晶石墨的基本物理性能及其微晶结构有较大幅度的改善.在含锆石墨材料中,适当掺杂硅可提高材料的热导率,但是当锆的掺杂量为9%、硅的掺杂量大于2%(质量分数)时,再结晶石墨的常温热导率降低.双组元掺杂锆、硅使再结晶石墨的导电率和力学性能下降.在再结晶石墨中,掺杂的锆以碳化锆的形式存在,掺杂的硅大都以气态形式逸出,只有微量的硅以碳化硅的形式存在.
参考文献
| [1] | ZHANG Erlin(张二林),JIN Yunxue(金云学),CENG Songyan(曾松岩),ZHU Zhaojun(朱兆军),KANG Qiang(康强),LI Dong(李东),Microstructure ofin situ TiC reinforced titanium alloy matrix composites (自生TiC增强钛基复合材料的微观组织).Chin J Mater Res.(材料研究学报),14(5),524(2000) |
| [2] | Garcia Rosales C,Roth J,Behrisch R.Sputtering and surface composition modification of Ti doped graphite RG-Ti at temperatures up to 2000K[J].Journal of nuclear materials,(212-215),1211(1994) |
| [3] | Fitzer E.The future of carbon-carbon composites [J].Carbon,25(2),163(1987) |
| [4] | WANG Maozhang(王茂章),HE Fu(贺福),Carbon Fiber and composites(炭纤维及其复合材料)(Beijing:Chemical Industry Press of China,1996)p.56 |
| [5] | Burtseva T A,Chugunoc O K,Dovguchits E F,Komarow V L,Mazul I V.Resistance of carbon-based materials for the ITER divertor different radiation fluxes[J].Journal of nuclear materials,(191-194),309(1992) |
| [6] | DENG Jingyi(邓景讫),LIU Wenchuan(刘文川),DU Haifeng(杜海峰).Thermal shock resistance of C/C composites(C/C复合材料的抗热应力因素),Chin J Mater Res(材料研究学报),15(3),372(2001) |
| [7] | Enweani B N,Davis J W,Haasz A A.Thermal diffusivity/conductivity of doped graphites [J].Journal of nuclear materials,224,245(1995) |
| [8] | Rubel M,Almqvist N,Wienhold P.Effects of titanium impregnation on the thermal conductivity of carbon/copper composite materials[J].Journal of nuclear materials,258～263,787(1998) |
| [9] | QIU Haipeng(邱海鹏),GUO Quangui(郭全贵),SONG Yongzhong(宋永忠),ZHAI Gengtai(翟更太),SONG Jinren(宋进仁),LIU Lang(刘朗),Study of the relationship between thermal conductivity and microcrystalline parameters of bulk graphite(石墨材料导热性能与微晶参数关系的研究),New Carbon Materials(新型炭材料),17(1),36(2002) |
| [10] | QIU Haipeng(邱海鹏),GUO Quangui(郭全贵),ZHAI Gengtai(翟更太),SONG Yongzhong(宋永忠),LIU Lang(刘朗),Effects of adhesive on physical properties and microstructures of graphite materials(粘结剂对石墨材料的物理性能及微观结构影响的研究),Aerospace Materials and Technology(宇航材料工艺),31(6),23(2001) |
| [11] | Philip L,Walker Jr.Chemistry and physics of carbon[M].New York:Marcel Dekker,7,83(1971) |
| [12] | WANG Qiang(王强),Zirconium(锆)(Shanghai,Shanghai Science and Technology Press of China.1961)p.137 |
| [13] | Speciallized Commission of Encyclopaedia under the Chinese Chemical Technology(中国化工百科全书委员会).Encyclopaedia of Chemical Technology of China[M](中国化工百科全书)Vol.15(Beiljing:Chemical Industry Press of China,1998)p.754 |
| [14] | CHENG Jian(陈健),The review of silicon graphite(硅化石墨材料综述),Electro carbon(电碳),4,1(1996) |
| [15] | Takahashi H,Kufoda H,Akamatu H.Correlation between stacking order and crystallite dimensions in carbons[J].Carbon,2,432(1964) |
| [16] | Keely B T.Physics of graphite[M].(London and New Jersey:Applied science publishers,1981)p.20 |
| [17] | M.Inagaki(稻垣道夫),translated by LIU Hongbo(刘洪波),The evaluation of graphitization degree(石墨化度的评价),Carbon Technology(炭素技术),(5),38(1991) |
| [18] | LI Shenhua(李圣华).Carbon and Graphite Materials(炭和石墨制品)(Beijing,Metallurgical Industry Press of China,1983)p.36 |
| [19] | S.Otani(大谷杉郎),Y.Sanada(真田雄三),Introductionto Carbonization Engineering(炭化工学基础)(Lanzhou,Xinhua Press of China,1985)p.31 |
| [20] | Sarmsnof(萨姆松诺夫),Analysis of hard liquate compound(难熔化合物分析)(Shanghai,Shanghai Science Technology Press of China,1965)p.4 |
| [21] | LU Shilin(芦时林),Brian Rand,Large diameter carbon filaments from mesophase pitch for thermal management applications(高导热大直径中间相沥青炭纤维的研制及结构表征),New Carbon Materials(新型炭材料),15(1),1(2000) |
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