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Porous palladium materials prep ared by spark plasma sintering with addition of nano pore forming agent and surface treatment

WEI FENG1,2, XIAODONG ZHU3,* , LIXIA PENG4, XU ZHOU3, JIAN LUO3

Affiliation

  1. Department of Material formation control engineering, Chengd u University , Chengdu 610106, P R China
  2. Department of Materials Science & Engineering, Sichuan University, Chengdu 610065, P. R. China
  3. Department of Material formation control engineering, Chengdu University, Chengdu 610106, P R China
  4. National Key Laboratory for Surface Physics and Chemistry, Mianyang 62190 7 , P. R China

Abstract

After the n ano palladium bl ack particles as pore forming agent were mixed with the spongy palladium powder, the porous palladium materials were prepared by using the spark plasma sintering and its surface was treated by using the r edox. The results showed that, the n ano palladium bl ack materials would produce significant shrinkage after being heated at 500 550 and possess good pore forming effect. After this pore forming agent was mixed with the spongy palladium powder and sintered at 550 ℃℃, the porous palladium materials whose structural stability and mechanical properties were good, the pore size distrib ution and pore size could be adjusted effectively, the porosity was high 89%89%) could be prepared. Through analysis of surface composition, we could find that, the cleanliness of the materials was high since the addition of the pore forming agent did not c ause any pollution of materials. After surface treatment, the content of carbon impurity on the surface of the porous palladium materials could also be reduced to some extent so that surface roughness and surface a rea could be increased further..

Keywords

Spark plasma sintering, Porous palladium, Nano pore forming agent, Surface treatment.

Citation

WEI FENG, XIAODONG ZHU, LIXIA PENG, XU ZHOU, JIAN LUO, Porous palladium materials prep ared by spark plasma sintering with addition of nano pore forming agent and surface treatment, Optoelectronics and Advanced Materials - Rapid Communications, 9, 7-8, July-August 2015, pp.974-980 (2015).

Submitted at: Oct. 4, 2014

Accepted at: June 24, 2015