【摘要】 利用SEM、EPMA、电化学曲线测量、XPS等检测技术,研究了HSn62-1黄铜在pH值为2的H₂SO₄溶液、pH值为13的NaOH溶液和3.5%（质量分数）的NaCl溶液中的腐蚀形貌、腐蚀产物、腐蚀类型,并针对不同的腐蚀机制,建立了化学反应模型,对腐蚀机制进行了分析。结果表明,HSn62-1在H₂SO₄溶液中腐蚀失重明显,且其溶解方式为选择性溶解,其腐蚀是以析氢腐蚀为主的混合腐蚀机制;在NaCl溶液和NaOH溶液中的腐蚀为溶解-再沉积机制,溶解速度较为缓慢,在NaCl溶液中为析氢腐蚀,在NaOH溶液中为吸氧腐蚀。更多还原

【Abstract】 Scanning electronic microscopy（SEM）,energy dispersive X-ray spectroscopy（EDS）,electro probe micro-analysis（EPMA）,open-circuit potential and potentiodynamic polarization and X-ray photoelectron spectroscopy（XPS）were used to explore the corrosion mechanism and morphology of HSn62-1 brass in H₂SO₄ solution（pH=2）,NaOH solution（pH=13）and NaCl solution（3.5%,mass fraction）.The results indicated that there existed obvious weight loss in H₂SO₄ solution compare to NaOH solution and NaCl solution.Numerous corrosion products were detected except CuO and ZnO.The dezincification of HSn62-1 in H₂SO₄ solution can be explained as selective dissolution and its cathodic reactions were dominated by oxygen reduction and hydrogen reaction.In contrast,the dezincification mechanism was simultaneous dissolution of both zinc and copper and with the subsequent re-deposition of copper.Besides the cathodic reaction was hydrogen evolution corrosion in NaCl solution and oxygen evolution corrosion in NaOH solution.更多还原