三元层状化合物Ti2SC的制备及其力学性能
Preparation and Mechanical Properties of Layered Ternary Compound Ti2SC
摘 要
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Ti2SC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Ti2SC块体材料; 考察了Ti2SC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Ti2SC粉体活性较高, 其中含有少量副产物TiC和Ti3S4; 在1 250 ℃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。
Ti2SC
放电等离子烧结
力学性能
self-propagating high-temperature synthesis
Ti2SC
spark plasma sintering
mechanical property
Abstract
Taking titanium powders, powdered sulfur and graphite powders as raw materials and aluminite powders as auxiliary agents, Ti2SC powders were successfully synthesized by self-propagating high-temperature synthesis and a ball-milling process. And then, layered ternary compound Ti2SC bulk material was prepared using Ti2SC powders as raw materials by spark plasma sintering at different temperatures and holding time. The phases and morphology of Ti2SC 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 Ti2SC powders had higher activity, and a little by-products TiC and Ti3S4 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.
中图分类号 TQ174 DOI 10.11973/jxgccl201607006
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51102053); 江苏省自然科学基金资助项目(BK20131220); 教育部留学回国人员基金资助项目
收稿日期 2015/4/10
修改稿日期 2016/4/20
网络出版日期
作者单位点击查看
备注王雨晨(1988-), 女, 河南新乡人, 硕士研究生。
引用该论文: WANG Yu-chen,XU Jian-guang,PENG Gui-hua,LIANG Zhen-hua. Preparation and Mechanical Properties of Layered Ternary Compound Ti2SC[J]. Materials for mechancial engineering, 2016, 40(7): 27～31
王雨晨,许剑光,彭桂花,梁振华. 三元层状化合物Ti2SC的制备及其力学性能[J]. 机械工程材料, 2016, 40(7): 27～31
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【3】TZENOV N V, BARSOUM M W. Synthesis and characterization of Ti3AlC2［J］. Journal of the American Ceramic Society, 2000, 83(4): 825-832.
【4】SALAMA I, EL-RAGHY T, BARSOUM M W. Synthesis and mechanical properties of Nb2AlC and (Ti, Nb)2AlC［J］. Journal of Alloys Compounds, 2002, 347(1/2): 271-278.
【5】WANG X H, ZHOU Y C. Microstructure and properties of Ti3AlC2 prepared by the solid-liquid reaction synthesis and simultaneous in-situ hot pressing process［J］. Acta Mater, 2002, 50(12): 3143-3151.
【6】GANGULY A, ZHEN T, BARSOUM M W. Synthesis and mechanical properties of Ti3GeC2 and Ti3(SixGe1-x)C2 (x=0.5, 0.75) solid solutions［J］. Journal of Alloys Compounds, 2004, 376: 287-295.
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【8】PHATAK N A, SAXENA S K, FEI Y. Synthesis and structural stability of Ti2GeC［J］. Journal of Alloys Compounds, 2009, 474: 174-179.
【9】PHATAK N A, SAXENA S K, FEI Y. Synthesis of a new MAX compound (Cr0.5V0.5)2GeC and its compressive behavior up to 49 GPa［J］. Journal of Alloys Compounds, 2009, 475: 629-634.
【10】SCABAROZI T H, AMINI S, FINKEL P, et al. Electrical, thermal, and elastic properties of the MAX-phase Ti2SC［J］. Journal of Applied Physics, 2008, 104(3): 033502-033503-5.
【11】DU Y L, SUN Z M, HASHIMOTO H, et al. First-principles study on electronic structure and elastic properties of Ti2SC［J］. Physics Letters A, 2008, 372: 5220-5223.
【12】AMINI S, BARSOUM M W, RAGHY T E, et al. Synthesis and mechanical properties of fully dense Ti2SC［J］. J Am Cerarn Soc, 2007, 90(12): 3953-3958.
【13】GUPTA S, AMINI S, BARSOUM M W, et al. Tribological behavior of Ti2SC at ambient and elevated temperatures［J］. J Am Ceram Soc, 2007, 90(11): 3566-3571.
【14】万方芳. 三元层状碳化物Ti2SC的合成及性能研究［D］.武汉: 武汉理工大学, 2010.
【15】梁宝岩, 汪乐, 王志炜, 等. 自蔓延高温合成Ti2SC材料［J］. 粉末冶金材料科学与工程, 2013, 18(5): 675-679.
【16】严汉兵, 许剑光, 吴梅江, 等. 铝对高温自蔓延合成Ti3SiC2粉体的影响［J］.机械工程材料, 2015, 39(1): 46-49.
【17】李汶霞, 鲁燕萍.等离子烧结与等离子活化烧结［J］.真空电子技术, 1998(1): 17-23.
【18】MATSUMOTO A, KATOH K, ANDOH K. Research and development of novel materials by plasma discharge sintering process［J］. Zairyo-to-Kankyo, 1995, 44(11): 625-633.
【19】ANSTIS G R, CHANTIKUL P, LAWN B R, et al. A critical evaluation of indentation techniques for measuring fracture toughness: I, direct crack measurements［J］. J Am Ceram Soc, 1981, 64: 533-538.
【20】KRUZIC J J, RITCHIE R O.Determining the toughness of ceramics from Vickers indentations using the crack-opening displacements: an experimental study［J］. J Am Ceram Soc, 2003, 86: 1433-1436.
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