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研究了由细钨粉加1～2％Ni—Fe(wt),通过压制、预烧结、研碎、分级和强化烧结制预合金粉,再由合金粗粉加2％(wt)硬脂酸或0. 4％(wt)聚乙烯醇,通过成形、预烧结和烧结成W-Ni-Fe合金多孔材料的工艺。探讨了团粒强化烧结温度、粉末粒度、成形压力、烧结温度和时间等工艺因素对多孔W-Ni-Fe合金性能的影响。研制出具有最大孔径130. 7μm,相对透气系数1. 78×10~(-2)L/min·cm~2·mm·H_2O,开孔孔隙度26. 46％,抗弯强度141. 3MPa的多孔W-Ni-Fe合金多孔材料,经抗热震使用实验,证明能用于净化1523K和11. 8MPa的高温高压燃气。
The effects of pre-alloyed powders containing 1% ~ 2% Ni-Fe (wt%) and sintering, pre-sintering, pulverizing, Or 0.4% (wt) polyvinyl alcohol by the process of forming, pre-sintering and sintering into a W-Ni-Fe alloy porous material. The effects of sintering temperature, powder particle size, forming pressure, sintering temperature and time on the properties of porous W-Ni-Fe alloy were investigated. Developed with a maximum aperture 130. 7μm, the relative permeability coefficient of 1. 78 × 10 ~ (-2) L / min · cm ~ 2 · mm · H_2O, open porosity of 26.46%, flexural strength of 141. 3MPa Porous W-Ni-Fe alloy porous material, the use of thermal shock experiments show that can be used to purify 1523K and high pressure gas at 11.8 MPa.