氟化镧对多孔钛的影响研究

发布时间：2018-03-31 16:08

本文选题：多孔钛　切入点：氟化镧　出处：《稀土》2017年04期

【摘要】：采用添加造孔剂法制备多孔钛,并且加入微量氟化镧以期得到高孔隙率高强度的多孔钛。选取三种不同粒径的钛粉做为原料,分别制备多孔钛,并且加入氟化镧探究其对多孔钛的影响效果。随着钛粉粒径的减小,多孔钛的开孔率、孔隙率随着下降,孔径尺寸略有减小;且多孔钛的抗压强度、弹性模量和抗弯强度随之增强,但不同粒径的多孔钛,氟化镧的增加效果不同,而细化晶粒是氟化镧能增强多孔钛力学性能的原因。综合考虑,C组(粒径最小)制备所得的多孔钛力学性能最佳,其中氟化镧的添加量为0.3%(质量分数)时抗压强度、弹性模量分别为157.84 MPa和3.73 GPa,抗弯强度为66.62 MPa。
[Abstract]:Porous titanium was prepared by adding pore-forming agent, and microamounts of lanthanum fluoride were added in order to obtain porous titanium with high porosity and high strength. Three kinds of titanium powders with different particle sizes were used as raw materials to prepare porous titanium. The effect of lanthanum fluoride on porous titanium was investigated. With the decrease of titanium particle size, the porosity and pore size of porous titanium decreased, and the compressive strength of porous titanium decreased slightly. The elastic modulus and flexural strength increased, but the increase effect of lanthanum fluoride was different with different particle size of porous titanium. The mechanical properties of porous titanium prepared by lanthanum fluoride (La fluoride) were considered to be the best when the content of lanthanum fluoride was 0.3% (mass fraction), and the mechanical properties of porous titanium were the best when the content of lanthanum fluoride was 0.3 (mass fraction), and the mechanical properties of porous titanium were the best when the content of lanthanum fluoride was 0.3% (mass fraction). The elastic modulus was 157.84 MPa and 3.73 GPA, respectively, and the flexural strength was 66.62 MPA.
【作者单位】：西昌学院理学院;
【基金】：四川省教育厅科研计划项目(13ZB0171;15ZB0229) 西昌学院项目(13SQZ07)
【分类号】：TB383.4;TG146.23

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