龙国宁,黄小忠,陈金.碳纤维表面 h-BN 耐高温涂层的制备及表征[J].表面技术,2015,44(9):84-88.
LONG Guo-ning,HUANG Xiao-zhong,CHEN Jin.Preparation and Characterization of h-BN High-temperature Resistant Coating on the Surface of Carbon Fibers[J].Surface Technology,2015,44(9):84-88
碳纤维表面 h-BN 耐高温涂层的制备及表征
Preparation and Characterization of h-BN High-temperature Resistant Coating on the Surface of Carbon Fibers
投稿时间:2015-05-29  修订日期:2015-09-20
DOI:10.16490/j.cnki.issn.1001-3660.2015.09.014
中文关键词:  碳纤维  六方氮化硼  溶液浸渍法  热处理  耐高温  表面形貌
英文关键词:carbon fiber  h-BN  solution dip coating  heat treatment  thermostability  surface morphology
基金项目:
作者单位
龙国宁 中南大学 物理与电子学院, 长沙 410083 
黄小忠 中南大学 航天与航空学院, 长沙 410083 
陈金 西南技术工程研究所, 重庆 400039 
AuthorInstitution
LONG Guo-ning School of Physics and Electronics, Central South University, Changsha 410083, China 
HUANG Xiao-zhong School of Aeronautics and Astronautics, Central South University, Changsha 410083, China 
CHEN Jin Southwest Technology and Engineering Research Institute, Chongqing 400039, China 
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中文摘要:
      目的 在碳纤维表面制备六方氮化硼涂层,以提高纤维的抗氧化、耐高温性能,拓宽其在高温领域的应用。 方法 以硼酸、尿素、氨气和氮气作为原始材料,先通过浸渍法在碳纤维表面涂覆硼酸和尿素的混合溶液,然后将其放置在氨气和氮气氛围中进行高温热解。 采用傅里叶红外光谱、X 射线电子能谱及 X 射线衍射等测试技术对涂层的成分和结构进行表征。 结果 碳纤维表面的涂层连续,形貌良好。 红外光谱中,在 1399,799 cm-1处存在 B—N 键和 B—N—B 键的特征峰。 X 射线衍射图谱中,在 43. 64°和 53. 93°存在六方氮化硼(001)晶面和(004)晶面的特征峰。 X 射线电子能谱分析表明,涂层中存在 O,B,C 和 N 四种元素,且 B 与 N 的原子比接近 1:1。 结论 实验中成功制备了 h-BN 涂层碳纤维,且涂层和碳纤维结合较好。 涂层中的 h-BN 结晶度良好,纯度较高,但少量氧化物的存在会对 h-BN 涂层碳纤维耐高温性的提升有所影响,如何进一步提高 h-BN 涂层的纯度有待研究。
英文摘要:
      Objective Hexagonal boron nitride coatings were prepared on carbon fiber surface, in order to improve the oxidation resistance and high temperature resistant performance of the fiber, so as to broaden its application in the field of high temperature. Methods With boric acid, urea, ammonia and nitrogen gas as raw materials, a mixture of boric acid and urea solution was coated on the carbon fiber surface through impregnating method, and the coating was then placed in the ammonia and nitrogen atmosphere for high temperature pyrolysis. The morphology of the coating was observed by electronic microscope analysis to check whether the coating was well bonded with the carbon fiber. Fourier infrared spectra, X ray electronic energy spectrum and X-ray diffraction (XRD) were used to characterize the composition and structure of the coating. Results The coating on the surface of the carbon fiber was continuous and had good appearance. In the infrared spectrum, B—N key and B—N—B key characteristic peaks occurred at 1399, 799 cm-1 . In the X-ray diffraction pattern, (001) crystal plane and (004) crystal plane characteristic peaks of hexagonal boron nitride appeared at 43. 64° and 53. 93°, respectively. X-ray photoelectron analysis showed the existence of the four elements of O, B, C and N, and a B / N atom ratio of close to 1: 1. Conclusion H-BN coated carbon fiber was successfully prepared, and the coating was well bonded with the carbon fiber. The h-BN in the coating had good crystallinity and high purity, but the existence of a small amount of oxide had influence on the thermostability improvement of h-BN coated carbon fiber. More works have to be done to study how to further improve the purity of h-BN coatings.
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