【摘要】 以NaCl为造孔剂,在粉末压制压力为600 MPa、烧结温度600℃保温3 h、801℃保温1 h、1 000℃保温1 h的工艺条件下,用元素粉末法制备多孔Ni3Al金属间化合物。研究造孔剂添加量与多孔Ni3Al金属间化合物的孔隙度之间的关系,推导出孔隙度与造孔剂添加量之间的数学关系,在该特定的工艺条件下,Ni3Al的孔隙度θ与NaCl的添加量w之间的关系为1/(1-θ)=1.260 8+3.9235 8[w/(1-w)]。更多还原

【Abstract】 Porous Ni3Al intermetallic compounds were fabricated by blend element powder metallurgy.The relationship of amount of pore-forming agent NaCl and porosity of porous Ni3Al intermetallic compounds was studied.The results indicate: porous Ni3Al intermetallic compounds could be synthesized under the sintering process of 600 ℃ for 3 h,801 ℃ for 1 h,1 000 ℃ for 1 h and the pressing pressure of 600 MPa.The mathematic relation between the amount of pore-forming agent and the porosity of the compound was deduced.At the specific process condition,the mathematics relationship 1/(1?θ)=1.260 8+3.9235 8 [w/(1?w)] has obtained,which is concerned with the porosity(θ) of Ni3Al and the addition amount of NaCl(w).更多还原