| 放电等离子烧结制备超细晶粒W-TiC复合材料 |
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| 引用本文： | 谈 军,周张健,屈丹丹,马 垚,李 明.放电等离子烧结制备超细晶粒W-TiC复合材料[J].稀有金属材料与工程,2011,40(11):1990-1993. |
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| 作者姓名： | 谈 军 周张健 屈丹丹 马 垚 李 明 |
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| 作者单位： | 北京科技大学,北京,100083 |
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| 基金项目： | 国家自然科学基金重点项目 (50634060)；国际热核聚变实验堆 (ITER)计划专项国内配套项目 (2010GB109000) |
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| 摘 要： | 采用机械合金化和放电等离子烧结(SPS)技术制备了纳米TiC颗粒弥散增强超细晶W-TiC复合材料,对超细晶W-TiC复合材料的显微组织和室温力学性能进行了研究。研究表明,采用SPS工艺于1700℃下烧结1min可获得烧结颗粒结合良好,致密度高达约98.6%的超细晶W-TiC复合材料。通过添加纳米TiC,不仅能抑制W晶粒的长大,还能促进W的致密化。当TiC的加入量为0.7%时(质量分数,下同)可获得晶粒尺寸为0.5μm,抗弯强度和维氏硬度分别为1262MPa,6.45GPa的超细晶W-TiC复合材料。
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| 关 键 词： | 钨 超细晶粒 放电等离子烧结 TiC |
| 收稿时间： | 2010/11/30 0:00:00 |
Fabrication of Ultra Fine Grained W-TiC Composites by Spark Plasma Sintering |
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| Tan Jun,Zhou Zhangjian,Qu Dandan,Ma Yao and Li Ming.Fabrication of Ultra Fine Grained W-TiC Composites by Spark Plasma Sintering[J].Rare Metal Materials and Engineering,2011,40(11):1990-1993. |
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| Authors: | Tan Jun Zhou Zhangjian Qu Dandan Ma Yao and Li Ming |
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| Affiliation: | University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Nano TiC particles dispersion strengthened ultra fine grained(UFG) W-TiC composites were fabricated by mechanical alloying(MA) and spark plasma sintering(SPS).The microstructure and the room temperature mechanical properties of the W-TiC composites were studied.The results show that the well-combined and highly-densified(nearly 98.6%) UFG W-TiC composites can be obtained by SPS at 1700 oC for 1 min.The addition of the nano TiC can refine the grains of W,and accelerate its densification.The grain size,relati... |
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| Keywords: | tungsten ultra fine grain spark plasma sintering TiC |
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