利用纳米钯的受热收缩性制备高洁净度多孔钯材料  

Preparation of High-Cleanliness Porous Palladium by the Use of Heat-Shrinkability of Palladium Black

作　　者：冯威[1] 刘颖[2] 连利仙[2] 朱晓东[1] 孔清泉[2] 

机构地区：[1]成都大学,四川成都610106 [2]四川大学,四川成都610064

出　　处：《稀有金属材料与工程》2014年第12期3159-3162,共4页Rare Metal Materials and Engineering

基　　金：表面物理与化学国家重点实验室开放基金(SPC200701);四川省教育厅科研基金(12ZB173)

摘　　要：采用纳米钯黑做造孔剂并与海绵钯混合进行等离子脉冲放电烧结（SPS）的方法制备多孔钯块体材料。结果表明,纳米钯黑材料在500~550℃受热后会产生明显的收缩,具有良好的造孔效果。由于采用该方法不引入任何杂质,故可在550℃时制备出洁净度与孔隙率（87.88%）高、力学性能好的多孔钯块体材料。该方法也可为其它高洁净度多孔金属材料的制备提供有价值的借鉴。The porous palladium bulk was prepared by the spark plasma sintering （SPS） with nano palladium black as the pore-forming agent mixed with sponge palladium. The results show that nano palladium black material shrinks obviously with fine pore-forming effect when it is heated at 500-550 ℃. No impurities are brought when using this method, so porous palladium bulk with excellent mechanical performance and high porosity （87.88%） and cleanliness can be prepared at 550 ℃. Besides, such a method can offer valuable reference for preparing other porous metal materials with high cleanliness.

关 键 词：多孔钯 高洁净 纳米钯黑 SPS烧结 

分 类 号：TB383.4[一般工业技术—材料科学与工程]