以聚碳硅烷包覆B4C为原料温压-烧结原位制备SiC/B4C复相陶瓷
SiC/B4C Multiphase Ceramics Using Polycarbosilane-Coating B4C as Raw Materials Prepared In-suit by Warm Pressing and Sintering
摘 要
以聚碳硅烷(PCS)包覆B4C粉为原料, 分别在300 ℃、50 MPa下温压成型和800 MPa下冷等静压成型, 而后将压坯置于氩气气氛保护下在1 200 ℃保温2 h, 再在1 800~2 000 ℃下真空烧结3 h, 原位反应制备出SiC/B4C复相陶瓷;研究了它的相对密度、物相组成和显微结构。结果表明: 温压工艺比冷等静压工艺能得到更高密度的复相陶瓷; 含15%SiC的温压压坯在烧结3 h后得到复相陶瓷的相对密度大于93%; 复相陶瓷由B4C和SiC相组成, SiC相均匀分布在B4C颗粒界面上。
SiC/B4C复相陶瓷
聚碳硅烷
原位反应
warm pressing
SiC/B4C multiphase ceramics
polycarbosilane
in-situ reaction
Abstract
B4C/SiC pellets were prepared by warm pressing of polycarbosilane-coating boron carbide powder at the temperature of 300 ℃ under the pressure of 50 MPa, and cold isostatic pressing under the pressure of 800 MPa, respectively. The samples were then kept warm at 1 200 ℃ for 2 h in flowing Ar, with subsequent sintering for 3 h between 1 800 and 2 000 ℃ in vacuum. Relative densities, phases and microstructures of the multiphase ceramics were investigated. The results show that the multiphase ceramics prepared by warm pressing (WP) had higher density than that by cold isostatic pressing (CIP). The multiphase ceramics with maximum relative density was achieved after the warm pressing green bodies containing 15% SiC sintered for 3 h, and its relative density was more than 93%. The multiphase ceramics consisted of B4C and SiC and SiC phases distributed uniformly on the B4C particles interface.
中图分类号 TB332
所属栏目
基金项目 上海市自然科学基金资助项目(09ZR1420700); 上海市重点学科建设资助项目(J51402)
收稿日期 2010/6/14
修改稿日期 2011/3/28
网络出版日期
作者单位点击查看
备注林文松(1966-), 男, 福建漳州人, 教授, 博士。
引用该论文: LIN Wen-song,HE Liang. SiC/B4C Multiphase Ceramics Using Polycarbosilane-Coating B4C as Raw Materials Prepared In-suit by Warm Pressing and Sintering[J]. Materials for mechancial engineering, 2011, 35(5): 11～13
林文松,何亮. 以聚碳硅烷包覆B4C为原料温压-烧结原位制备SiC/B4C复相陶瓷[J]. 机械工程材料, 2011, 35(5): 11～13
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参考文献
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【3】STEINBRCK M. Oxidation of born carbide at high temperature[J].J Nuclear Materials, 2005, 336:185-193.
【4】YANO T, BUDIYANTO K, YOSHIDA K, et al. Fabrication of silicon carbide fiber-reinforced silicon carbide composite by hot-pressing. Fusion Engineering and Design, 1998, 41:157-160.
【5】李爱菊, 尹衍升, 甄玉花, 等.(SiC, TiB2)/B4C复合材料的烧结机理[J].复合材料学报, 2004, 21(4):129-133.
【6】丁硕, 温广武, 雷廷权.自生法制备纳微米颗粒增强B4C基复合材料的研究[J].材料工程, 2002(5):14-21.
【7】江涛, 金志浩, 杨建锋, 等.B4C/BN纳米复合粉末的制备与显微结构的研究[J].稀有金属材料与工程, 2009, 38(增刊1):280-283.
【8】MA Q C, ZHANG G J, KAN Y M, et al. Effect of additives introduced by ball milling on sintering behavior and mechanical properties of hot-pressed B4C ceramics[J].Ceramics International, 2010, 36:167-171.
【9】丁硕, 温广武, 雷廷权, 等.由聚碳硅烷生成纳米SiC颗粒增强B4C基复相陶瓷的结构与性能[J].无机材料学报, 2002, 17(5):1013-1018.
【10】周晓军, 张国军, 李耀刚, 等.以聚碳硅烷为先驱体制备ZrB2-SiC-C超高温陶瓷[J].稀有金属材料与工程, 2007, 37(增刊2):5-7.
【11】HERZOG A, THUNEMANN M, VOGT U, et al. Novel application of ceramic precursors for the fabrication of composites[J].J Eur Ceram Soc, 2005, 25(2/3):187-192.
【12】HA J S, LIM C S, KIM C S, et al. A new process for Al2O3/SiC nanocomposites by polycarbosilane infiltration[J].Materials Chemistry and Physics, 2002, 75:241-245.
【13】王骥洲, 李俊杰, 余煜玺, 等.聚碳硅烷熔体的稳态流变性能[J].高分子材料科学与工程, 2009, 25(7):53-56.
【14】GALUSEK D, SEDLACEK J, RIEDEL R. Al2O3-SiC composites prepared by warm pressing and sintering of an organosilicon polymer-coated alumina powder[J].Journal of the European Ceramic Society, 2007, 27:2385-2392.
【15】CAO S H, YI J H, QU X H, et al. Development and characteristic of warm compaction and its technological problem analysis[J].Materials Science & Engineering, 1999, 17(1):57-61.
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