Sintering studies on Ni-Cu-YSZ SOFC anode cermet processed by mechanical alloying
Sintering studies on Ni-Cu-YSZ SOFC anode cermet processed by mechanical alloying
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DOI：
10.1007/s10973-009-0330-y
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发表时间：
2009-08-01
影响因子：
4.4
通讯作者：
Homem Mello-Castanho, Sonia Regina
中科院分区：
文献类型：
--
作者：
Guisard Restivo, Thomaz Augusto;Homem Mello-Castanho, Sonia Regina
采用机械合金化(MA)法制备了一种新型的40%[(Cu)-Ni]-YSZ金属陶瓷材料。粉末压坯在空气、氢气和惰性(Ar)气氛中在膨胀仪和管式炉中进行烧结，最高可达1,350摄氏度。采用激活表面概念(SAS)进行烧结可以预测并增强此类粉末的致密化。进行了分步等温膨胀法(SID)烧结动力学研究，确定了Ni-YSZ和Ni-Cu-YSZ球团的动力学参数。当含铜材料具有最小的烧结活化能时，表明了两步烧结过程。MA-SAS联合法制备SOFC燃料电池负极材料是一条很有前途的途径。
New 40 vol%[(Cu)-Ni]-YSZ cermet materials processed by mechanical alloying (MA) of the row powders are prepared. The powder compacts are sintered in air, hydrogen and inert (argon) atmospheres at a dilatometer and tubular furnace up to 1,350 A degrees C. Sintering by activated surface concept (SAS) can anticipate and enhance the densification in such powders. Stepwise isothermal dilatometry (SID) sintering kinetics study is performed allowing determining kinetic parameters for Ni-YSZ and Ni-Cu-YSZ pellets. Two-steps sintering processes is indicated while Cu-bearing material features the smallest activation energy for sintering. The allied MA-SAS method is a promising route to prepare SOFC fuel cell anode materials.