文章信息/Info

Title:

Effect of Annealing on the Microstructure and Corrosion Resistance Properties of Ni50Nb14Ta14P9Fe13 Amorphous Alloy

文章編號:

1674-3962(2025)07-0629-07

作者:

蘇銘濱; 何波; 倪黎; 賀勇; 周亮; 張新富; 劉偉; 陳吉

1.遼寧石油化工大學機械工程學院，遼寧 撫順 113001 2.中國石化催化劑有限公司，北京 100029 等

Author(s):

SU Mingbin;  HE Bo;  NI Li;  HE Yong;  ZHOU Liang;  ZHANG Xinfu; LIU Wei;  CHEN Ji

1. College of Mechanical Engineering, Liaoning Petrochemical University,Fushun 113001, China 2. China Petrochemical Catalyst Co., Ltd., Beijing 100029, China et al.

關鍵詞:

非晶合金; 退火; 晶化; 組織結構; 耐蝕性能

Keywords:

amorphous alloy;  annealing;  crystallization;  microstructure;  corrosion resistance properties

分類號:

TG139+.8

DOI:

10.7502/j.issn.1674-3962.202311012

文獻標志碼:

A

摘要:

采用電弧熔煉結合真空甩帶制備了Ni50Nb14Ta14P9Fe13非晶條帶，通過XRD、SEM以及XPS分析了合金的微觀結構，并采用差示掃描量熱分析法、動電位極化曲線、電化學阻抗譜研究了退火對Ni50Nb14Ta14P9Fe13非晶合金耐蝕性能的影響。結果表明，鑄態(tài)合金具有典型的非晶態(tài)結構。在1133和1213 K退火5 min后，合金均發(fā)生晶化，晶化程度隨溫度升高而增大，晶粒尺寸為10～32 nm。在65 ℃的32%HCl溶液中，鑄態(tài)合金的耐蝕性能顯著優(yōu)于部分晶化試樣（1133 K）和完全晶化試樣（1213 K），自腐蝕電流密度為53.9 μA/cm2，約為部分晶化試樣和完全晶化試樣的25.6%和14.4%；其維鈍電流密度為1.3 mA/cm2，約為部分晶化試樣和完全晶化試樣的33.3%和2.9%；晶化后其容抗弧半徑顯著減小。鑄態(tài)合金的腐蝕速率最低，耐蝕性能最佳；而完全晶化后其腐蝕速率最高，耐蝕性能最差。本研究揭示了鎳基非晶合金的晶化對其腐蝕行為的負面影響。

Abstract:

Ni50Nb14Ta14P9Fe13 amorphous ribbons were prepared by arc melting combined with vacuum strip spinning. The microstructure of the alloy was analyzed by XRD, SEM and XPS, and the effects of annealing on the corrosion resistance properties of Ni50Nb14Ta14P9Fe13 amorphous alloy were studied by differential scanning calorimetry (DSC), potentiodynamic polarization (PD) curves, and electrochemical impedance spectroscopy (EIS). The results indicate that the as-cast alloy has a typical amorphous structure. After annealing at 1133 and 1213 K for 5 min, the alloy undergoes crystallization, and the degree of crystallization increases with temperature, with a grain size range of 10~32 nm. In a 32wt% HCl solution at 65 ℃, the corrosion resistance property of the as-cast alloy is significantly better than that of the partially crystallized sample (1133 K) and the fully crystallized sample (1213 K), with a self-corrosion current density of 53.9 μA/cm2, which is about 25.6% and 14.4% of the respective value of the partially crystallized and fully crystallized samples. The passivation current density is 1.3 mA/cm2, which is approximately 33.3% and 2.9% of the respective value of the partially crystallized and fully crystallized samples. The capacitance arc radius significantly decreases after crystallization. The as-cast alloy has the lowest corrosion rate and the best corrosion resistance. Its corrosion rate is the highest and its corrosion resistance is the worst after complete crystallization. This study reveals the negative impact of crystallization on the corrosion behavior of the Ni-based amorphous alloy.