Structural studies of porous Ni/YSZ cermets fabricated by the solid-state reaction method
Structural studies of porous Ni/YSZ cermets fabricated by the solid-state reaction method
复制标题
固相反应法制备多孔Ni/YSZ金属陶瓷的结构研究
DOI：
10.1016/j.ceramint.2013.02.094
复制
发表时间：
2013
影响因子：
5.2
通讯作者：
Ka
中科院分区：
文献类型：
--
作者：
J. Kim;K. Cho;I. Kagomiya;Ka
添加炭黑的 NiO/YSZ 复合材料表现出高度多孔的结构，这是由于烧结过程中与放热反应相关的 CO 和 CO2 气体的释放增强。炭黑的添加导致NiO/YSZ复合材料的密度和晶粒尺寸减小。 NiO/YSZ复合材料的孔隙率随着烧结温度的降低和NiO含量的增加而增加。此外，通过在(Ar+6% H2)中还原NiO/YSZ复合材料制备了高孔隙度的Ni/YSZ金属陶瓷，这归因于NiO转变为Ni，然后脱出氧。炭黑用作造孔剂对于制备多孔Ni/YSZ金属陶瓷非常有效。
Carbon black-added NiO/YSZ composites exhibited a highly porous structure due to the enhanced evolution of CO and CO2gases associated with exothermic reactions during sintering. The addition of carbon black resulted in a decrease in the density and grain size of NiO/YSZ composites. The porosity of NiO/YSZ composites increased with decreasing the sintering temperature and increasing the NiO content. Additionally, highly porous Ni/YSZ cermets were fabricated by reducing the NiO/YSZ composites in (Ar+6% H2), which was attributed to the change of NiO to Ni and then the extraction of oxygen. The carbon black used as a pore-former was highly effective for preparing porous Ni/YSZ cermets.