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用STM研究渗硼改性碳纤维结构与力学性能的相关性

, PP. 7-11

Keywords: 碳(石墨)纤维,渗硼,表面微观结构,STM,XRD

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Abstract:

研究了PAN基碳纤维浸渍不同硼化物溶液进行高温热处理后(2500℃)对力学性能的影响。采用扫描隧道显微镜观察了渗硼处理对碳纤维表面微观形态结构的影响,同时还采用X-ray衍射技术分析了渗硼处理对纤维结构参数的影响。结果表明渗硼处理可提高CF的力学性能,采用硼化物A浸渍热处理后CF的模量和强度分别提高了10.3%和15.3%。通过STM观察可以很清楚看到渗硼处理可提高CF的择优取向和晶体尺寸,减少表面缺陷。X-ray衍射分析结果与STM一致,渗硼热处理提高了CF的晶体尺寸。

References

[1]  Jones LE, Thrower. Influence of boron on carbon fiber microstructure. Physical properties, and oxidation behavior[J]. Carbon, 1991, 29(2):251-269.
[2]  Johnson DJ. Direct lattice resolution of layer planes in polyacrylonitrile based carbon fibers[J]. Nature, 1970, 266:750-751.
[3]  AgrawaI A, Yinnon H, Uh1man D R.Boron modification of carbon fibers . JMater Sci,1986, 21(10):3455-3466.
[4]  A11en S, Cooper GA, Johnson DJ,et al.Carbon fibers of high modulus . 3rd conf.on Industrial corbon and Graphite .London:Soc. Chem. Ind, 1970. 456.
[5]  Donnet JB, Qin RY. Study of carbon fiber surfaces by scanning tunne11ing microscopy, part 1, carbon fibers from different precursors and after various heat treatment temperatures[J]. Carbon, 1992, 30(5):787-796.
[6]  Donnet JB, Wang TK,Shen ZM. Atomic sca1e STM study of pitch-based carbon fibers: inf1uence of mesophase content and heat treatment temperature[J]. Carbon, 1996, 34(11):1413-1418.
[7]  Hoffman WP, E1ing VB, Gur1ey JA. Scanning tunne1ing microscopy on carbon fibers[J]. Carbon, 1988,26(5):754-757.
[8]  Hoffman WP, Hur1ey WC, Owens TW, et al. Advantage of the scanning tunne11ing microscope in documenting changes in carbon fiber surface morpho1ogy brought about by various surface treatment[J]. J Mater Sci,1991, 26(17):4545-4553.
[9]  Oya A. Review phenomena of catalytic graphitization[J]. JMater Sci,1982,17(2):309-322.
[10]  Oya A, Yamashita R, Otani S. Catalytic graphitization of carbons by borons[J]. Fuel, 1979, 58(4):495-500.
[11]  Trask RB. Effect of boron addition on some properties of synthetic graphites[J]. Fuel, 1968, 47:397-402.
[12]  Fourdeux A, Perret B, Ruland W. General structure features of carbon fibers .Intern.Conf. on Carbon Fiber, Their Composites and Applications . London: Unwin Bros Ltd, Old Woking,Surrey,1971.57.

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