以钛粉、石墨粉、硫粉为原料,铝粉为助剂,采用自蔓延高温合成法和球磨处理制备出了Ti2 SC粉体；然后以该粉体为原料,通过放电等离子烧结在不同温度和保温时间下制备了三元层状Ti2 SC块体材料；考察了Ti2 SC粉体的物相和微观形貌,以及烧结温度和保温时间对块体材料力学性能和断面形貌的影响.结果表明：制备的 Ti2 SC 粉体活性较高,其中含有少量副产物 TiC 和Ti3 S4；在1250℃保温5 min得到的块体材料具有优异的力学性能,其密度为4．57 g.cm－3,维氏硬度为8．61 GPa,断裂韧度可达5．81 MPa.m1/2,其断面形貌为层状和柱状晶粒混合的结构.
Taking titanium powders,powdered sulfur and graphite powders as raw materials and aluminite powders as auxiliary agents,Ti2 SC powders were successfully synthesized by self-propagating high-temperature synthesis and a ball-milling process.And then,layered ternary compound Ti2 SC bulk material was prepared using Ti2 SC powders as raw materials by spark plasma sintering at different temperatures and holding time.The phases and morphology of Ti2 SC powders were investigated,as well as the effects of sintering temperature and holding time on mechanical properties and fracture morphology of the bukl material.The results show Ti2 SC powders had higher activity,and a little by-products TiC and Ti3 S4 were found.The bulk material sintered at 1 250 ℃ for 5 min exhibited excellent mechanical properties,and its density,Vichers′hardness and fracture toughness were 4.57 g. cm-3 ,8.61 GPa and 5.81 MPa.m1/2 ,respectively;Its fracture morphology was composed of both laminar and columanar grains.
参考文献
| [1] | Michel W.Barsoum.The M_(N+1)AX_N Phases: A new Class of solids; Thermodynamically Stable Nanolaminates[J].Progress in Solid State Chemistry,20001/4(1/4):201-281. |
| [2] | Michel W. Barsoum;Dmitri Brodkin;Tamer El-Raghy.Layered machinable ceramics for high temperature applications[J].Scripta materialia,19975(5):535-541. |
| [3] | N.V.Tzenov;M.W.Barsoum.Synthesis and characterization of Ti_3AlC_2[J].Journal of the American Ceramic Society,20004(4):825-832. |
| [4] | I. Salama;T. El-Raghy;M.W. Barsoum.Synthesis and mechanical properties of Nb_2AlC and (Ti,Nb)_2AlC[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20021/2(1/2):271-278. |
| [5] | X. H. Wang;Y. C. Zhou.Microstructure and properties of Ti_3AlC_2 prepared by the solid-liquid reaction synthesis and simultaneous in-situ hot pressing process[J].Acta materialia,200212(12):3141-3149. |
| [6] | A. Ganguly;T. Zhen;M.W. Barsoum.Synthesis and mechanical properties of Ti_3GeC_2 and Ti_3(Si_xGe_(1-x))C_2 (x = 0.5, 0.75) solid solutions[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20041/2(1/2):287-295. |
| [7] | Nishad A. Phatak;Surendra K. Saxena;Yingwei Fei.Synthesis and structural stability of Ti_2GeC[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20091/2(1/2):174-179. |
| [8] | Nishad A. Phatak;Surendra K. Saxena;Yingwei Fei.Synthesis of a new MAX compound (Cr_(0.5)V_(0.5))_2GeC and its compressive behavior up to 49 GPa[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20091/2(1/2):629-634. |
| [9] | T. H. Scabarozi;S. Amini;P. Finkel;O. D. Leaffer;J. E. Spanier;M. W. Barsoum;M. Drulis;H. Drulis;W. M. Tambussi;J. D. Hettinger;S. E. Lofland.Electrical, thermal, and elastic properties of the MAX-phase Ti_(2)SC[J].Journal of Applied Physics,20083(3):033502-1-033502-5-0. |
| [10] | Du YL;Sun ZM;Hashimoto H;Tian WB.First-principles study on electronic structure and elastic properties of Ti2SC[J].Physics Letters, A,200831(31):5220-5223. |
| [11] | Shahram Amini;Michel W. Barsoum;Tamer El-Raghy.Synthesis and Mechanical Properties of Fully Dense Ti_SC[J].Journal of the American Ceramic Society,200712(12):3953-3958. |
| [12] | Gupta S;Amini S;Filimonov D;Palanisamy T;El-Raghy T;Barsoum MW.Tribological behavior of Ti2SC at ambient and elevated temperatures[J].Journal of the American Ceramic Society,200711(11):3566-3571. |
| [13] | 万方芳 .三元层状碳化物Ti<,2>SC的合成及性能研究[D].武汉理工大学,2010. |
| [14] | 梁宝岩;汪乐;王志炜;李俊鹏;郭猛;李孟洋.自蔓延高温合成Ti2SC材料[J].粉末冶金材料科学与工程,2013(5):675-679. |
| [15] | 严汉兵;许剑光;吴海江;颜建辉;陈晓宇;陈肯.铝对高温自蔓延合成Ti3SiC2粉体的影响[J].机械工程材料,2015(1):46-48,57. |
| [16] | Jamie J. Kruzic;Robert O. Ritchie.Determining the Toughness of Ceramics from Vickers Indentations Using the Crack-Opening Displacements: An Experimental Study[J].Journal of the American Ceramic Society,20038(8):1433-1436. |
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