粉末冶金技术2025，Vol.43Issue(2)：206-214,9.DOI:10.19591/j.cnki.cn11-1974/tf.2023100012
溶液燃烧合成-粉末冶金法制备Al2O3/Cu多孔复合材料
Preparation of Al2O3/Cu porous composites by combination of solution combustion synthesis and powder metallurgy method
摘要
Abstract
Al2O3/Cu composite powders were prepared by solution combustion synthesis and hydrogen reduction method using copper nitrate,aluminum nitrate,glucose,and urea as the raw materials.The Al2O3/Cu composite powders were uniformly mixed with the pore-forming agent sodium chloride,and then the mixed powders were cold-pressed.Finally,the Al2O3/Cu porous composite materials(A-C-M)were prepared by sintering-dissolution process.The raw powders and A-C-M were characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).The compression performance of A-C-M was tested by universal testing machine.The effect of glucose addition on the combustion product powders was studied.The effect of Al2O3 content on the compression performance of A-C-M was discussed.The results show that,when the molar ratio of glucose to Cu(NO3)2 is 1,the specific surface area of the combustion products reaches the maximum as 12.5 m2·g‒1.After the combustion product is calcined to remove carbon,the pores of the powder particles increase,but the specific surface area is reduced to 10.2 m2·g‒1 due to the sintering effect of high temperature calcination.After the calcination products are reduced by hydrogen,the powder particles are broken into floccules.However,due to the sintering effect of high reduction temperature,the specific surface area of the obtained Al2O3/Cu composite powders is further reduced to 7.5 m2·g‒1.With the increase of Al2O3 content,the porosity of A-C-M increases gradually,and the compressive strength decreases gradually.关键词
多孔复合材料/溶液燃烧合成/葡萄糖/孔隙率/压缩性能Key words
porous composites/solution combustion synthesis/glucose/porosity/compressive properties分类
矿业与冶金引用本文复制引用
杨腾,储爱民,李滔,赵玉萍,董泽熙,郭世柏..溶液燃烧合成-粉末冶金法制备Al2O3/Cu多孔复合材料[J].粉末冶金技术,2025,43(2):206-214,9.基金项目
国家自然科学基金资助项目(52174344) （52174344）
湖南省自然科学基金资助项目(2023JJ30222,2024JJ7178) （2023JJ30222,2024JJ7178）
湖南省大学生创业训练项目(S202210534024X) （S202210534024X）
