多孔Ti-Nb合金材料的制备与性能研究

张美丽; 叱小彤; 周春生; 刘彦峰; 方琛; 郑郭刚

doi:10.7513/j.issn.1004-7638.2021.06.011

多孔Ti-Nb合金材料的制备与性能研究

doi: 10.7513/j.issn.1004-7638.2021.06.011

张美丽^{1, 2,},
叱小彤¹,
周春生^{1, 2},
刘彦峰^{1, 3},
方琛¹,
郑郭刚¹

1.
商洛学院，陕西省尾矿资源综合利用重点实验室，陕西商洛 726000
2.
商洛学院，陕西省矿产资源清洁高效转化与新材料工程研究中心，陕西商洛 726000
3.
西安理工大学材料科学与工程学院，陕西西安 710048

基金项目: 陕西省教育厅专项科研计划资助项目（20JK0618）；商洛市科技局科学技术研究发展计划项目（2020-Z-0083）；国家大学生创新创业训练计划项目（S202011396005）

详细信息

作者简介:
张美丽（1985—），女，陕西商洛人，硕士，讲师，主要从事有色金属多孔材料相关研究，E-mail：283233650@qq.com

中图分类号: TF823,TG146.2
计量
- 文章访问数: 162
- HTML全文浏览量: 6
- PDF下载量: 28
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-30
- 刊出日期: 2021-12-31

Preparation and properties of porous Ti-Nb alloy materials

1.
Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo University, Shangluo 726000, Shaanxi, China
2.
Shaanxi Engineering Research Center for Mineral Resources Clean & Efficient Conversion and New Materials, Shangluo University, Shangluo 726000, Shaanxi, China
3.
School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048，Shaanxi, China

摘要

摘要: 采用粉末冶金添加造孔剂法制备多孔Ti-Nb合金，研究不同Nb含量对合金物相结构、微观孔隙形貌、孔隙率、抗压强度及耐腐蚀性能的影响。研究结果表明：多孔Ti-Nb合金具有α和β双相组织，随Nb含量的增加，材料中的 β 相含量逐渐增大，Nb含量为25%～30%时材料的孔隙大小和分布较均匀，平均孔径为300 μm左右；随Nb含量的增加，材料的孔隙率随之增大，径向收缩率和抗压强度逐渐减小，耐腐蚀性呈先增大后减小趋势，在Nb含量30%时材料的耐腐蚀性最强，其孔隙率为33.6%，径向收缩率为7.3%，抗压强度为130 MPa。
- 多孔Ti-Nb合金 /
- 粉末冶金 /
- 造孔剂 /
- 相结构 /
- 孔隙形貌 /
- 抗压强度 /
- 耐腐蚀性
Abstract: The porous Ti-Nb alloy was prepared by adding pore-forming agent in powder metallurgy. The effects of Nb content on the phase structure, pore morphology, porosity, compressive strength and corrosion resistance of the alloy were investigated. The results show that the porous Ti-Nb alloy has α and β phase structure. With the increase of Nb content, the content of β phase in the material increases gradually. When the content of Nb is 25% ~ 30%, the pore size and distribution of the material are more uniform, and the average pore size is about 300 μm. With the increase of Nb content, the porosity of the material increases, while the radial shrinkage rate and the compressive strength gradually decrease, and the corrosion resistance increases first and then decreases. When the Nb content is 30%, the corrosion resistance of the material is the strongest, with the porosity of 33.6%, the radial shrinkage rate of 7.3% and the compressive strength of 130 MPa.
- porous Ti-Nb alloy /
- powder metallurgy /
- pore-forming agent /
- phase structure /
- pore morphology /
- compressive strength /
- corrosion resistance

HTML全文

图 1 多孔Ti-Nb合金的烧结工艺曲线

Figure 1. Sintering process curve of porous Ti-Nb alloys

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图 2 不同Nb含量多孔Ti-Nb合金的XRD图谱

Figure 2. XRD patterns of porous Ti-Nb alloys with different Nb contents

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图 3 多孔Ti-Nb合金的EDS分析

Figure 3. EDS analysis of porous Ti-Nb alloys

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图 4 不同Nb含量多孔Ti-Nb合金的微观孔隙形貌

Figure 4. Micropore morphology of porous Ti-Nb alloys with different Nb contents

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图 5 不同Nb含量多孔Ti-Nb合金的径向收缩率

Figure 5. Radial shrinkage rate of porous Ti-Nb alloys with different Nb contents

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图 6 不同Nb含量多孔Ti-Nb合金的抗压强度

Figure 6. Compressive strength of porous Ti-Nb alloys with different Nb contents

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图 7 多孔Ti-Nb合金的压缩载荷-位移曲线

Figure 7. Compressive load-displacement curves of the porous Ti-Nb alloys

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图 8 不同Nb含量多孔Ti-Nb合金的阳极极化曲线

Figure 8. Anodic polarization curve of porous Ti-Nb alloys with different Nb contents

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图 9 不同Nb含量多孔Ti-Nb合金的阻抗图谱

Figure 9. EIS curves of porous Ti-Nb alloys with different Nb contents

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表 1 多孔Ti-Nb合金的孔隙率和平均孔径

Table 1. Porosity and average pore size of porous Ti-Nb alloys

w(Nb)/%	孔隙率/%	平均孔径/μm
5	20.46	223
10	26.70	252
15	29.30	271
20	29.56	310
25	30.85	360
30	33.61	355
35	46.04	351

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表 2 不同Nb含量多孔Ti-Nb合金的腐蚀电位

Table 2. The corrosion potential of porous Ti-Nb alloys with different Nb contents

w(Nb)/%	腐蚀电位/V	腐蚀电流/A	电流密度/(A·cm⁻²)
5	−0.86	−6.77	2.16
10	−0.77	−6.54	2.08
15	−0.71	−6.96	2.22
20	−0.71	−6.50	2.07
25	−0.75	−6.24	1.99
30	−0.76	−6.15	1.96
35	−0.95	−7.16	2.28

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