高质量的超导接头对于超导磁体的建造和后期稳定运行有着关键的作用。然而，针对Nb₃Sn线材，常常因为内部Ta阻挡层的存在而影响超导接头的制备。为了探究Nb₃Sn超导线材中Ta阻挡层的去除方法，选取内锡法制备的Nb₃Sn超导线材为实验对象，研究了线材在HF溶液、HF气氛、HF和H₂O₂混合溶液以及HF和HNO₃混合溶液中的腐蚀行为和特征，利用SEM和OM分析了线材微观结构和腐蚀形貌。结果表明，Ta层在HF和HNO₃混合溶液中腐蚀最快，在HF和H₂O₂混合溶液中次之，在HF气氛中较慢，在HF溶液中最慢。综合腐蚀后效果，采用HF和H₂O₂混合溶液进行腐蚀是去除Nb₃Sn超导线材中Ta阻挡层的最佳方法。同时，选取高纯Ta片为研究对象，分别在上述介质中进行腐蚀实验，并通过OM、XRD和XPS观察和分析试样腐蚀形貌、物相结构变化和腐蚀溶液中的元素价态，揭示了Ta的腐蚀机理，氧化剂的存在可以通过加快Ta表面Ta₂O₅膜的形成来加快HF对Ta的腐蚀速率。

High-quality superconducting joints play a key role in the construction and stable operation of superconducting magnets. The preparation of superconducting joints for Nb₃Sn wires is often affected by the presence of an internal tantalum barrier layer. Thus, this study examined the effectiveness of different removal methods of the Ta barrier layer in Nb₃Sn superconducting wire. For this, the superconducting wire prepared by an internal tin method was considered as the experimental object, and the corrosion behavior and characteristics of the wire in HF solution, HF atmosphere, mixed solution of HF and H₂O₂, and mixed solution of HF and HNO₃ were investigated. The microstructure and corrosion morphology of the wire were analyzed using SEM and OM. Furthermore, high-purity Ta sheets were selected as the research object, and corrosion experiments were carried out in the above-mentioned media. The corrosion morphology, phase structure, and valence state of the elements of the specimens were analyzed using OM, XRD, and X-ray photoelectron spectroscopy (XPS) to reveal the corrosion mechanism of Ta. The results showed that the corrosion of the Ta layer was the fastest in the mixed solution of HF and HNO₃, followed by the mixed solution of HF and H₂O₂, the HF atmosphere, and then the HF solution. Based on the effect after corrosion, the mixed solution of HF and H₂O₂ was found to be the best method to remove the Ta barrier layer in Nb₃Sn superconducting wire. Moreover, the presence of an oxidation agent can accelerate the corrosion rate of Ta by HF by accelerating the formation of Ta₂O₅ film on the Ta surface.