采用超重力辅助反应加工技术,制备出了TiC-TiB2复合陶瓷.XRD、SEM与EDS结果表明,TiC-TiB2复合陶瓷主要由大量、细小的TiB2片晶均匀分布于TiC基体上的独特组织构成.超重力下的燃烧化学和液相分离效应促使反应原料转化为纯净的Ti-W-Cr-C-B合金液,并随即发生凝固反应.TiC在凝固过程中率先形核,TiB2依附于TiC形核析出,二者以合作方式生长,但是由于TiC较TiB2具有更快的生长速率,从而形成TiC包覆TiB2片晶的独特组织.
参考文献
| [1] | 益小苏;杜善义;张立同.复合材料手册[M].北京:化学工业出版社,2009 |
| [2] | Ordanyan S S;Unrod V I;Avgustinik A I .Reactions in the system TiCx-TiB2[J].Powder Metallurgy and Metal ceramics,1975,14:729-731. |
| [3] | Holleck H;Leiste H;Schneider W .Significance of phase boundaries in wear resistant TiC/TiB2 materials.Part 1:Investigations with transmission electron microscopy[J].International Journal of Refractory Metals & Hard Materials,1987,6(03):149-154. |
| [4] | D. Vallauri;I.C.Atias Adrian;A. Chrysanthou .TiC-TiB_2 composites: A review of phase relationships, processing and properties[J].Journal of the European Ceramic Society,2008(8):1697-1713. |
| [5] | Wen-Jun Li;Rong Tu;Takashi Goto .Preparation of directionally solidified TiB_2-TiC eutectic composites by a floating zone method[J].Materials Letters,2006(6):839-843. |
| [6] | Agrafiotis C C;Hlavacek V;Puszynski J A .Direct synthesis of composites and solid solutions by combustion reactions[J].Combustion Science and Technology,1992,88:187-192. |
| [7] | Wang L;Wixom M R;Thompson L T .Structural and mechanical properties of TiB2 and TiC prepared by self-propagating high-temperature synthesisdynamic compaction[J].Journal of Materials Science,1994,29:534-551. |
| [8] | 潘传增,张龙,赵忠民,曲振生,杨权.超重力下燃烧合成TiB_2-TiC共晶复合陶瓷[J].复合材料学报,2010(01):109-117. |
| [9] | V. N. Sanin;V. I. Yukhvid .Centrifugation-Driven Melt Infiltration in High-Temperature Layered Systems[J].Inorganic materials,2005(3):247-254. |
| [10] | 王富耻.材料现代分析测试方法[M].北京:北京理工大学出版社,2006 |
| [11] | Binglin Zou;Ping Shen;Qichuan Jiang .Dependence Of The Shs Reaction Behavior And Product On B_4c Particle Size In Al-ti-b_4c And Al-tio_2-b_4c Systems[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2009(3):499-504. |
| [12] | 殷声.燃烧合成[M].北京:冶金工业出版社,1999 |
| [13] | H.Y. Wang;Q.C. Jiang;Y.Q. Zhao;F. Zhao;B.X. Ma;Y. Wang .Fabrication of TiB_2 and TiB_2-TiC particulates reinforced magnesium matrix composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):109-114. |
| [14] | Vallauri D;Shcherbakov V A;Khitev A V .Study of structure formation in TiC-TiB2-Mex Or ceramics fabricated by SHS and densification[J].Acta Materialia,2008,56:1380-1389. |
| [15] | 胡汉起.金属凝固原理[M].北京:机械工业出版社,2000 |
| [16] | Binglin Zou;Ping Shen;Zhongming Gao .Combustion synthesis of TiC_x-TiB_2 composites with hypoeutectic, eutectic and hypereutectic microstructures[J].Journal of the European Ceramic Society,2008(11):2275-2279. |
| [17] | Tu J P;Wang N Y;Yang Y Z et al.Preparation and properties of TiB2 nanoparticle reinforced copper matrix composites by in situ processing[J].Materials Letters,2002,52:448-452. |
| [18] | Rudy E .A high temperature phase with the ε-carbide structure in the molybdenum-chromium-carbon system[J].Journal of the Less-Common Metals,1973,33(03):327-332. |
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