Zr原子分数对Ti基非晶复合材料腐蚀性能的影响

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (2): 7-12.

Zr原子分数对Ti基非晶复合材料腐蚀性能的影响

赵燕春^1,2, 蒋建龙¹, 毛瑞鹏¹, 孙浩¹, 寇生中^1,2

1.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050;
2.兰州理工大学材料科学与工程学院, 甘肃兰州 730050

收稿日期:2019-02-26 出版日期:2020-04-28 发布日期:2020-06-23
作者简介:赵燕春(1984-),女,山东菏泽人,博士,副教授.
基金资助:
国家自然科学基金(51661017,51551101,51571105,51661016),甘肃省杰出青年基金(17JR5RA108)

Influence of Zr atom fraction on corrosion resistance behavior of Ti-based amorphous composite

ZHAO Yan-chun^1,2, JIANG Jian-long¹, MAO Rui-peng¹, SUN Hao¹, KOU Sheng-zhong^1,2

1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech. , Lanzhou 730050, China;
2. College of Materials Science and Engineering,Lanzhou Univ. of Tech. , Lanzhou 730050, China

Received:2019-02-26 Online:2020-04-28 Published:2020-06-23

摘要/Abstract

摘要： 采用磁悬浮熔炼水冷铜坩埚-负压铜模吸铸法制备了(Ti_0.5Ni_0.5－xZr_x)₈₀Cu₂₀(x=0、0.02、0.04、0.06)非晶复合材料,分析了各种合金试样的相组成,测试了合金试样在人工海水和模拟人体的PBS溶液中的极化曲线,观察了电化学反应后的腐蚀形貌,分析电化学腐蚀产物并进行表征.结果表明:几种合金的组织都是非晶基体与晶体相组成的复合材料,晶体相为B2-Ti(Ni, Cu)奥氏体相和B19’-Ti(Ni,Cu)马氏体相.与晶态TC4合金相比,合金在两种溶液中均具有较好的耐蚀性,且随着Zr元素原子分数的增加,合金的腐蚀抗性也不断增强;当x=0.06时,合金的耐腐蚀性能最为优异,其自腐蚀电位高,为－0.218 V,热力学倾向小不易腐蚀,自腐蚀电流密度较低,为0.912 μA·cm^－2,极化电阻大,为3.4 MΩ·cm²,腐蚀的动力学速率低,且在PBS溶液中合金具有更优异的耐蚀性,在腐蚀形貌中未发现明显的点蚀坑.

关键词: 非晶复合材料, 微观组织, 腐蚀性能

Abstract: Samples of (Ti_0.5Ni_0.5－xZr_x)₈₀Cu₂₀ bulk metallic glass with x=0, 0.02, 0.04 and 0.06 were prepared with method of magneto-suspension melting plus absorptive casting in water-cooling crucible and negative-pressure copper mold. The phase-composition of the alloy samples was analyzed, and the polarization curves of the samples in artificial sea-water and simulated human PBS solution were tested. The morphology of electrochemical corrosion was observed and the electrochemical corrosion productwas precipitated and characterized. The result show that the microstructure of the alloy would be composed of amorphous matrix plus crystal phase B2-Ti (Ni, Cu) austenite phase and B19’-Ti (Ni, Cu) martensite phase. It would be gotten that compared with the crystalline TC4 alloy, several alloys would have better corrosion resistance in both artificial sea-water solution and PBS solution, and the corrosion resistance of the alloy would increase with the Zr content. When x=0.06, the alloy would exhibit the most excellent corrosion resistance, its self-corrosion potential was so high as －0.218 V, thermodynamic tendency was so feeble that hard to be corroded, self-corrosion current density was lower as 0.912 μA·cm^－2, polarization resistance was large as 3.4 MΩ·cm² and corrosion kinetic rate was low, and the alloy would have more excellent corrosion resistance in PBS solution and would be no obvious dotted corrosion pit to be found in the corrosion morphology.

Key words: amorphous composite, microstructure, corrosion behavior

中图分类号:

TG139.8

赵燕春, 蒋建龙, 毛瑞鹏, 孙浩, 寇生中. Zr原子分数对Ti基非晶复合材料腐蚀性能的影响[J]. 兰州理工大学学报, 2020, 46(2): 7-12.

ZHAO Yan-chun, JIANG Jian-long, MAO Rui-peng, SUN Hao, KOU Sheng-zhong. Influence of Zr atom fraction on corrosion resistance behavior of Ti-based amorphous composite[J]. Journal of Lanzhou University of Technology, 2020, 46(2): 7-12.

参考文献

[1] YAO K F,RUAN F,YANG Y Q,et al.Superductile bulk metallic glass [J].Applied Physics Letters,2006,88(12):122106-122108.
[2] INOUE AKIHISA.Bulk glassy alloys:historical development and current research [J].Engineering,2015,1(2):185-191.
[3] INOUE AKIHISA,TAKEUCHI AKIRA.Recent development and application products of bulk glassy alloys [J].Acta Materialia,2011,59(6):2243-2267.
[4] SCHROERS J,JOHNSON W L.Ductile bulk metallic glass [J].Physical Review Letters,2004,93(25):2555061-2555064.
[5] WU Y,SONG W L,ZHOU J,et al.Ductilization of bulk metallic glassy material and its mechanism [J].Acta Physica Sinica,2017,66(17):140-157.
[6] WU Y,SONG W L,ZHANG Z Y,et al.Relationship between composite structures and compressive properties in CuZr-based bulk metallic glass system [J].Science Bulletin,2011,56(36):3960-3964.
[7] 胡侨,张敏,李海飞,等.Ti-Zr-Cu-Co-Sn-Si块体非晶合金的形成及生物腐蚀行为和力学性能 [J].材料工程,2014,1(6):18-21,27.
[8] WANG T,WU Y. D,SI J J,et al.Novel Ti-based bulk metallic glasses with superior plastic yielding strength and corrosion resistance [J]. Materials Science and Engineering A,2015,642(7):297-303.
[9] LIU Y,WANG G,LI H F,et al.Ti-Cu-Zr-Fe-Sn-Si-Sc bulk metallic glass with good mechanical properties for biomedical applications [J].Journal of Alloys Compounds,2016,679(9):341-349.
[10] QIAO J W,ZHANG Y,CHEN G.Synthesis of plastic Zr-based bulk metallic glass with crystal phase by directional solidification [J].Acta Metallurgica Sinica,2009,45(4):410-414.
[11] QIAO J W,ZHANG Y,LIAW P K.Tailoring microstructures and mechanical properties of Zr-based bulk metallic glass matrix composites by the bridgman solidification [J].Advanced Engineering Materials,2008,10(11):1039-1042.
[12] 周琦,冯基伟,李志洋,等.纳米多孔Ni-Co电极的制备及其电催化析氢性能 [J].兰州理工大学学报,2018,44(6):1-5.
[13] 赵燕春,毛瑞鹏,袁小鹏,等.Ti基金属玻璃复合材料的腐蚀行为 [J].材料工程,2018,46(1):25-30.
[14] CHEN J,WANG J Z,CHEN B B,et al.Tribocorrosion behaviors of Inconel 625 alloy sliding against 316 steel in seawater [J].Tribol Trans,2010,54(4):514-522.
[15] STERN M,GEARY A L.Electrochemical polarization,1.A theoretical analysis of the shape of polarization curves [J].Journal of The Electrochemical Society,1957,104(1):56-63.
[16] 曹楚南.电化学腐蚀原理 [M].北京:化学工业出版社,2008.
[17] 檀朝桂,蒋文娟,吴学庆,等.Ti对部分晶化Ni基非晶合金电化学腐蚀性能的影响 [J].稀有金属,2007,31(4):462-466.
[18] 海敏娜,王快社,王文,等.纯锆R60702板材焊接接头的腐蚀性能研究 [J].稀有金属,2015,39(9):787-792.
[19] 赵燕春,寇生中,袁小鹏,等.形状记忆晶相强韧化Ti基非晶复合材料的组织和力学性能 [J].稀有金属,2015,39(1):29-34.
[20] XU K K,LAN,A D,YANG H J,et al.Corrosion behavior and pitting susceptibility of in-situ Ti-based metallic glass matrix composites in 3.5 wt.% NaCl solutions [J].Applied Surface Science,2017,423(11):90-99.
[21] 庹文海,杨尚磊,张冬梅.锆合金焊缝在酸性环境中的应力腐蚀损伤机制研究 [J].稀有金属,2016,40(1):26-31.
[22] 杨志刚,王铁军,王高潮,等.大块锆基非晶合金电化学耐腐蚀行为的试验研究 [J].稀有金属,2004,28(1):25-28.