Formation of Synchronous Electrodeposition of Al-Zr and Al-Hf from molten salt

熔盐同步电沉积 Al-Zr 和 Al-Hf 的形成

• 批准号: 20760486
• 负责人: FUKUMOTO Michihisa
• 金额: $ 2.66万
• 依托单位: Akita University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760486/
• 关键词: synchronous electrodeposition; molten salt; hafnium; zirconium; aluminum; cyclic oxidation; nickel aluminide; coating; 溶融塩; 同時電析; アルミニウム; ハウニウム; ジルコニウム; サイクル酸化; Niアルミナイド; Al; Hf; Zr; 耐サイクル酸化性; synchronous electrodeposition; molten salt; hafnium; zirconium; aluminum; cyclic oxidation; nickel aluminide; coating; 溶融塩; 同時電析; アルミニウム; ハウニウム; ジルコニウム; サイクル酸化; Niアルミナイド; Al; Hf; Zr; 耐サイクル酸化性

A Ni aluminide layer containing Zr and Hf was formed on a Ni specimen by the synchronous electrodeposition of Al-Zr and Al-Hf using a molten-salt bath. An electrodeposited layer consisting of Ni_2Al_3 and NiAl_3 layers, for which the ZrAl_3 particles were formed on the surface region, was formed, when the simultaneous electrodeposition of Al and Zr was carried out using the molten NaCl-KCl containing 3.5mol% AlF_3 and 0.05mol% ZrF_4. An electrodeposited layer consisting of Ni_2Al_3 and NiAl_3 layers, for which the HfAl_3 particles were formed on the surface region, was formed, when the simultaneous electrodeposition of Al and Hf was carried out using the molten NaCl-KCl containing 3.5mol% AlF_3 and 0.05mol% HfF_4. The cyclic-oxidation resistance of the Ni specimens covered by the Ni aluminide layer containing the ZrAl_3 and HfAl_3 particles was evaluated in air at 1423K. The sample covered with the Ni aluminide containing the ZrAl_3 and HfAl_3 particles, which was formed using the melt containing 3.5mol%AlF_3-0.05mol%HfF_4 and 3.5 mol%AlF_3-0.05mol%HfF_4, showed a high cyclic-oxidation resistance. On this sample after the oxidation test, an adhesive scale having a spiked shape, which consisted of Al_2O_3 as the outer layer and ZrO_2 or HfO_2 as the inner layer, was formed.

使用熔融盐浴的Al-Zr和Al-HF的同步电沉积在Ni样品上形成了含有ZR和HF的Ni铝制层。由Ni_2al_3和NiAL_3层组成的电沉积层，为其在表面区域形成Zral_3颗粒，当使用含有3.5mol％alf_3和0.05mol alf_3和0.05mol％Zrf_4的3.5mol nacl-kcl进行Al和ZR的同时进行Al和ZR的同时进行ZR的颗粒。由Ni_2al_3和NiAL_3层组成的电沉积层，为其在表面区域形成HFAL_3颗粒，当使用AL和HF同时使用含有3.5mol％alf_3和0.05mol％alf_3和0.05mol％HF的AL和HF进行hF时，形成了HFAL_3颗粒。在1423K的空气中评估了含有Zral_3和HFAL_3颗粒的Ni铝制层覆盖的Ni标本的环氧化抗性。带有含有Zral_3和HFAL_3颗粒的Ni铝制的样品，使用含有3.5mol％ALF_3-0.05mol％HFF_4和3.5 mol％ALF_3-0.0.05mol％HFF_4的熔体形成，显示出高的环状氧化抗性。在氧化测试之后的样品上，形成了具有尖峰形状的粘合刻度，由Al_2O_3作为外层和ZRO_2或HFO_2作为内层形成。