| 铝对自反应原位合成复合陶瓷坯件组织结构及性能的影响 |
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| 引用本文： | 刘宏伟,王建江,马世宁,孙晓峰. 铝对自反应原位合成复合陶瓷坯件组织结构及性能的影响[J]. 无机材料学报, 2011, 26(7): 715-720. DOI: 10.3724/SP.J.1077.2011.00715 |
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| 作者姓名： | 刘宏伟 王建江 马世宁 孙晓峰 |
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| 作者单位： | (1. 装甲兵工程学院 装备再制造工程系, 北京 100072; 2. 军械工程学院 先进材料研究所, 石家庄050003) |
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| 基金项目： | 国家自然科学基金(51001118,50672130)~~ |
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| 摘 要： | 分别以Ti-B4C-C体系和Ti-B4C-C-Al体系复合粉为反应原料, 利用自反应喷射成形技术制备Ti(C,N)-TiB2基复合陶瓷坯件. 利用XRD、SEM、EDS、TEM等方法, 研究分析了向喷射体系中加入5wt%金属Al对喷射沉积坯件组织结构、主要力学性能的影响及其原因. 结果表明, Ti-B4C-C体系的喷射沉积坯件主要由TiC0.3N0.7和TiB2主相及TiO2副产物相组成, 其致密度、维氏硬度、弯曲强度、断裂韧性等性能分别为97.2%、17.3GPa、387MPa、6.0MPa·m1/2; 喷射体系中添加5wt%金属Al后, 喷射沉积坯件的主相仍为TiC0.3N0.7和TiB2, 但副产物相中不含有害相TiO2, 而增加了对复合材料有益的Al2O3与Ti3Al相, 坯件内TiB2颗粒长径比增大, 出现大量长棒状晶, 并使坯件的致密度、维氏硬度、弯曲强度、断裂韧性等性能也分别提高到97.7%、20.6GPa、425MPa、7.3MPa·m1/2.可见金属Al的添加可有效抑制喷射过程中Ti的氧化, 明显改善喷射沉积坯件的综合力学性能.
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| 关 键 词： | 铝 喷射沉积坯件 组织结构 性能 |
| 收稿时间： | 2010-09-08 |
| 修稿时间： | 2010-11-25 |
Influence of Aluminum on Structure and Properties of Self-reactive Spray Formed Preforms |
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| LIU Hong-Wei,WANG Jian-Jiang,MA Shi-Ning,SUN Xiao-Feng. Influence of Aluminum on Structure and Properties of Self-reactive Spray Formed Preforms[J]. Journal of Inorganic Materials, 2011, 26(7): 715-720. DOI: 10.3724/SP.J.1077.2011.00715 |
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| Authors: | LIU Hong-Wei WANG Jian-Jiang MA Shi-Ning SUN Xiao-Feng |
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| Affiliation: | (1. Department of Remanufacturing Engineering, Academy of Armored Force, Beijing 100072, China; 2. Institute of Advanced Materials, Ordnance Engineering College, Shijiazhuang 050003, China) |
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| Abstract: | With composite powders of Ti-B4C-C and Ti-B4C-C-Al systems as reactants,Ti(C,N)-TiB2-based com-posite ceramic preforms were prepared by self-reactive spray forming technology.XRD,SEM,EDS and TEM were used to investigate the influence of 5wt% Al addition on the structure and properties of the preforms.It was shown that the performs made from Ti-B4C-C system were mainly composed of TiC0.3N0.7 and TiB2,with by-product phase of TiO2.Relative density,Vickers hardness,flexural strength and fracture toughness of T... |
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| Keywords: | aluminum performs structure properties |
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