(江西理工大學(xué) 應(yīng)用科學(xué)學(xué)院，贛州 341000)
摘 要: 采用二步重熔法制備不同Gd含量的Pb-Gd合金材料，采用抗拉強(qiáng)度測試、陽極失重法研究Gd對Pb-Gd合金力學(xué)性能和耐腐蝕性能的影響，并利用CV(循環(huán)伏安曲線)和XRD分析研究Gd含量對Pb-Gd合金陽極電化學(xué)性能及物相組成的影響。結(jié)果表明：合金抗拉強(qiáng)度隨Gd含量的增大而增大，當(dāng)Gd含量達(dá)到2.0%(質(zhì)量分?jǐn)?shù))時(shí)，合金抗拉強(qiáng)度為19.1 MPa，比純Pb的提高69.0%；添加Gd沒有影響陽極表面氧化膜物相的基本組成，陽極的表面氧化膜主要由β-PbO2和PbO組成。稀土元素Gd能降低合金電極陽極穩(wěn)定電位，且電位值隨稀土元素含量的增加而減小。
關(guān)鍵字: 電積；Pb-Gd合金；力學(xué)性能；腐蝕性能；陽極電位
（School of Applied Sciences，Jiangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:The Pb-Gd alloy anodes with different Gd contents were prepared by two stage remelting method. The effects of Gd contents on the tensile strength and corrosion resistance of Pb-Gd alloy anodes were examined by mechanics performance and mass-loss method. The cyclic voltammetry curve (CV) and XRD were used to study the electrochemical behaviour and phase composition of the Pb-Gd alloy anode . The result show that the tensile strength of Pb-Gd alloy anode increase with increasing the Gd content, when Gd content is 2.0% (mass fraction), the tensile strength of Pb-Gd alloy anode reaches 19.1 MPa which increases by 69.0% comparing with that of pure Pb anode. Addition of Gd can not change the surface film of lead anode, its mainly composes of β-PbO2 and PbO. But addition of Gd can reduce the anode steady potential, and the potential value decreases with increasing the rare earth metal content.
Key words: electrowinning; Pb-Gd alloy; mechanical properties; corrosion resistance; anode potential
