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低温放电等离子烧结法制备氮化硅陶瓷

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Abstract:

分别以MgO-Al2O3或MgO-AlPO4作为烧结助剂,采用放电等离子体低温快速烧结方法制备了主相为α相的Si3N4陶瓷材料。采用X射线衍射和扫描电子显微镜分析了样品的物相组成和显微结构;研究了烧结助剂及其含量、烧结温度对陶瓷样品的相对密度与力学性能的影响。结果表明当采用4%(质量分数,下同)MgO-4%Al2O3烧结助剂时,1400℃烧结的陶瓷样品的相对密度和弯曲强度达到最高,分别为81%和182MPa,且随烧结助剂中Al2O3含量的增加,样品的相对密度和弯曲强度降低。而当采用4%MgO-16%AlPO4烧结助剂时,1300℃烧结的陶瓷样品的相对密度和弯曲强度分别达到96%和366.5MPa,且样品的相对密度和弯曲强度随烧结温度的升高而增大。表明MgO-AlPO4可以用作Si3N4低温烧结的一种有效烧结助剂,可降低陶瓷的烧结温度和提高其力学强度。

References

[1]  张长瑞, 郝元恺. 陶瓷基复合材料-原理、工艺、性能与设计[M]. 长沙: 国防科技大学出版社, 2001: 6-7. ZHANG Changrui, HAO Yuankai. Ceramic-based Composites—Theory, Technics, Performance and Design (in Chinese). Changsha: National University of Defense Technology Press, 2001: 6-7. [2] 宇田川重和, 柳田博明, 须藤仪一. 新型无机硅化合物-基础与应用[M]. 钱钧, 等译. 北京: 中国建筑工业出版社, 1989: 160-205. SHIGEKAZU Udagawa, HIROAKI Yanagida, SUDOU Kyouichi. Novel Inorganic Silicon Compounds-Basics and Applications (in Chinese). QIAN Jun, et al trans. Beijing: China Architecture & Building Press, 1989: 160-205. [3] GUGE E, WOETTING G. Materials selection for ceramic components in automobiles [J]. Ind Ceram, 1999, 19(3): 196-199. [4] LUIGI Giacomazzi, UMARI P. First-principles investigation of electronic, structural, and vibrational properties of α-Si3N4 [J]. Phys Rev B, 2009, 80(14): 4201-4221. [5] SILVA F G, NETO M A, FERNANDES A J, et al. Adhesion and wear behaviour of NCD coatings on Si3N4 by micro-abrasion tests [J]. J Nanosci Nanotechnol, 2009, 9(6): 3938-3943. [6] JIMéNEZ-VILLACORTA F, CéSPEDES E, VILA M, et al. Microstructural properties and local order around iron in granular metal- insulator Fe/Si3N4 systems prepared by magnetron sputtering [J]. J Phys D: Appl Phys, 2008, 41(20): 5009-5014. [7] MARTIN Y Hsieh, PALO Alto Calif. Silicon nitride having low dielectric loss [P]. US Patent, 4642299. 1987-02-10. [8] 高濂, 宫本大树. 放电等离子烧结技术[J]. 无机材料学报, 1997, 12: 129-133. GAO Lian, MIYAMOTO Hiroki. J Inorg Mater (in Chinese), 1997, 12: 129-133. [9] 张东明, 傅正义. 放电等离子加压烧结(SPS)技术特点及应用[J]. 武汉理工大学学报, 1999, 21: 15-17. ZHANG Dongming, FU Zhengyi. J Wuhan Univ Technol (in Chinese), 1999, 21: 15-17. [10] 小林智秋. 放电等离子烧结技术与新材料[J]. 新素材, 1996(1): 19-28. KOBAYASHI T. New Mater (in Japanese), 1996(1): 19-28.

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