CAJ | 학술논문

为了制备孔结构适于浸渍的固体氧化物燃料电池（SOFC）陶瓷基体，本文以N‐甲基吡咯烷酮（NMP）为溶剂、聚苯醚砜（PESF）为黏结剂，与Gd0．1Ce0．9O2‐δ（GDC）粉体混合，然后经流延成型后浸入非溶剂中（水、水和NMP的混合溶液），通过相转变反应形成基体素坯，在1400℃烧结得到GDC陶瓷基体。通过扫描电子显微镜、阿基米德排水法及压汞仪等，研究了PESF和N M P含量，以及非溶剂的组成对GDC陶瓷基体的孔形貌、孔分布和孔隙率的影响。试验结果表明：采用质量分数为10％的PESF（m（PESF）∶ m（GDC））和质量分数为60％的NMP （m（NMP）∶ m（GDC）），且非溶剂为水时，可以得到孔隙率（＞40％）、孔形貌（直通孔）和孔分布（1～10μm）都适于SOFC电极浸渍要求的直通孔陶瓷基体。
위료제비공결구괄우침지적고체양화물연료전지（SOFC）도자기체，본문이N‐갑기필각완동（NMP）위용제、취분미풍（PESF）위점결제，여Gd0．1Ce0．9O2‐δ（GDC）분체혼합，연후경류연성형후침입비용제중（수、수화NMP적혼합용액），통과상전변반응형성기체소배，재1400℃소결득도GDC도자기체。통과소묘전자현미경、아기미덕배수법급압홍의등，연구료PESF화N M P함량，이급비용제적조성대GDC도자기체적공형모、공분포화공극솔적영향。시험결과표명：채용질량분수위10％적PESF（m（PESF）∶ m（GDC））화질량분수위60％적NMP （m（NMP）∶ m（GDC）），차비용제위수시，가이득도공극솔（＞40％）、공형모（직통공）화공분포（1～10μm）도괄우SOFC전겁침지요구적직통공도자기체。
The porous Gd0.1Ce0.9O2‐δ(GDC) ceramic backbones have been prepared through phase inversion method ,which are beneficial for infiltration in fabrication of solid oxide fuel cells (SOFC) .GDC powders were mixed with proper amount of solvent (NMP) and binder (PESF) to form slurry ,and then the slurry was tape‐casted into slurry film on the tape‐casting machine .Af‐ter the tape‐casting process ,the film was immerged into the non‐solvent (water or mixture of water and NMP) to make phase‐in‐version process happen .Finally ,the green tapes obtained in the phase‐inversion process were sintered at 1 400 ℃ to form ceramic substrate .The effects of PESF and NMP contents and non‐solvent composition on the pore morphology ,porosity and pore distri‐bution were systematically studied .The results showed that ,when 10% PESF (m(PESF):m(GDC)) ,60% NMP (m(NMP):m(GDC)) and water as non‐solvent were used ,the optimized results of porosity (above 40% ) and pore morphology (finger‐like pores) and pore distribution (1‐10 μm) for SOFC ceramic substrate could be obtained .