Electrodeposition, Structure and Corrosion Resistance of Nanocrystalline Ni-W Alloy

• 来源期刊: 中国化学（英文版）
• 学科: 化学
• 年，卷（期）: 2004,（3）
• 页码范围: 228-231
• 页数: 4页
• 分类号: O6
• 语种: 英文

摘要

Ni-W alloy was electrodeposited from the electrolyte solution containing sodium tungstate, nickel sulfate and ammonium citrate. The electrodeposition, heat treatment, structure, surface morphology and corrosion resistance in w＝0.03 NaCl solution, of Ni-W alloys were studied by means of DSC, XRD, SEM and electrochemical techniques. The results showed that the obtained Ni-W alloy electrodeposit with W weight content (wW＝0.471) was presented in more typical nanocrystalline. After heat treatment at 400 ℃ for 1 h, the phase structure of the deposits was not obviously changed whereas the agglomerate for the reunion of tiny grains on deposit surface caused the granule in a more smooth morphology, the microhardness was slightly increased and the corrosion resistance was enhanced.