采用原位分析设备与传统方法相结合的方式研究了以A12O3和Y2O3为烧结助剂的SiC陶瓷的液相烧结过程.通过高温实时观测炉对样品在测试过程中的收缩曲线以及形貌变化进行了表征,以及对液相形成过程的模拟进行了观测.采用传统分析方法研究了样品的相对密度、抗弯强度、物相组成以及微结构演变从1640℃到1920℃以40℃为间隔的变化情况.研究发现,液相明显开始起作用的温度在1640℃到1680℃之间.经典的液相烧结三阶段理论可以通过微结构以及相对密度等的分析来得到验证.该烧结体系的最佳烧结温度确认为1880℃,最高密度为(99.46±0.37)％,最大强度为(650±26) MPa.
参考文献
| [1] | Eduard Volz;Andreas Roosen;Wolfgang Hartung.Electrical and thermal conductivity of liquid phase sintered SiC[J].Journal of the European Ceramic Society,200110/11(10/11):2089-2093. |
| [2] | Sea-Hoon Lee.Low Temperature Pressureless Sintering of SiC Using an Aluminum Borocarbide Additive[J].Journal of the American Ceramic Society,20119(9):2746-2748. |
| [3] | Jingxian Zhang;Dongliang Jiang;Qingling Lin.Gelcasting and pressureless sintering of silicon carbide ceramics using Al_2O_3-Y_2O_3 as the sintering additives[J].Journal of the European Ceramic Society,201310(10):1695-1699. |
| [4] | E. Ciudad;O. Borrero-Lopez;F. Rodriguez-Rojas.Effect of intergranular phase chemistry on the sliding-wear resistance of pressureless liquid-phase-sintered α-SiC[J].Journal of the European Ceramic Society,20122(2):511-516. |
| [5] | Chakrabarti OP.;Mukerji J.;Das PK..Growth of SiC particles in reaction sintered SiC[J].Materials Chemistry and Physics,20011/3(1/3):199-202. |
| [6] | F. K. van Dijen;E. Mayer.Liquid Phase Sintering of Silicon Carbide[J].Journal of the European Ceramic Society,19964(4):413-420. |
| [7] | Kim YW.;Hirotsuru H.;Mitomo M..GRAIN GROWTH AND FRACTURE TOUGHNESS OF FINE-GRAINED SILICON CARBIDE CERAMICS[J].Journal of the American Ceramic Society,199511(11):3145-3148. |
| [8] | Xiao Yang;Xuejian Liu;Zhengren Huang.Vickers indentation crack analysis of solid-phase-sintered silicon carbide ceramics[J].CERAMICS INTERNATIONAL,20131(1):841-845. |
| [9] | Marcus Lange;Merten Kobalz;Jens Bergmann.Structural flexibility of a copper-based metal-organic framework: sorption of C4-hydrocarbons and in situ XRD[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,201421(21):8075-8085. |
| [10] | E. Jennifer Winn;William J. Clegg.Role of the powder bed in the densification of silicon carbide sintered with yttria and alumina additives[J].Journal of the American Ceramic Society,199912(12):3466-3470. |
| [11] | Hanqin Liang;Xiumin Yao;Xuejian Liu;Zhengren Huang.The effect of powder bed on the liquid phase sintering of α-SiC[J].Materials & design,2014Apr.(Apr.):1009-1013. |
| [12] | R. Huang;H. Gu;J. Zhang.Effect of Y_2O_3-Al_2O_3-ratio on rater-granular phases and films in tape-casting alpha-SiC with high toughness[J].Acta materialia,20058(8):2521-2529. |
| [13] | F. Rodriguez-Rojas;A.L. Ortiz;O. Borrero-Lopez.Effect of the sintering additive content on the non-protective oxidation behaviour of pressureless liquid-phase-sintered α-SiC in air[J].Journal of the European Ceramic Society,20106(6):1513-1518. |
| [14] | A.L. Ortiz;O. Borrero-Lopez;M.Z. Quadir.A route for the pressureless liquid-phase sintering of SiC with low additive content for improved sliding-wear resistance[J].Journal of the European Ceramic Society,20124(4):965-973. |
| [15] | Ye H.;Padture NP.;Pujar VV..Coarsening in liquid-phase-sintered alpha-SiC[J].Acta materialia,19992(2):481-487. |
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