(1. 昆明理工大學 材料科學與工程學院，昆明 650093;
2. 昆明理工大學 化學工程學院，昆明 650093; 3. 昆明理工大學 理學院，昆明 650093)
摘 要: 在熱傳計算的基礎上，采用鋅粒子為前驅體、鋁熔體為滲流體，通過氬氣滲流制備通孔泡沫鋁；對泡沫鋁的制備、壓縮性能及鋅殘余量進行研究。結果表明：滑石粉隔熱層厚度與滲流時間之間的關系為x2= 7.35×10−8τ；優(yōu)化的滲流工藝如下：滲流溫度740 ℃、鋅粒子預熱溫度220 ℃、鋅粒子直徑3 mm；平均孔徑為3 mm的泡沫鋁的屈服強度隨孔隙率的增加而減小；孔隙率為63%和67%的泡沫鋁的屈服強度都隨孔徑的增大而提高；泡沫鋁孔隙率從60%提高到71%，鋅殘余量從11.3%降低到4.5%。
關鍵字: 泡沫鋁；滲流；熱傳導；制備；壓縮性能
compression properties of aluminum foams with open cell
（1. School of Materials Science and Engineering, Kunming University of Science and Technology,
Kunming 650093, China;
2. School of Chemical Engineering, Kunming University of Science and Technology, Kunming 650093, China;
3. School of Science, Kunming University of Science and Technology, Kunming 650093, China）
Abstract:Based on the heat conduction calculation, Al foam with open-cell was fabricated by a new penetrating process which takes zinc particles as the precursor and presses Al melt into the precursor by Ar gas. The fabricating process, the compression properties and the residual zinc content were studied. The results show that the relationship between the thickness of talcum heat insulation layer and the infiltration time is x2= 7.35×10−8τ; the optimized procession parameters are deduced as the aluminum melt infiltration temperature of 740 ℃, the preheating temperature of zinc particles of 220 ℃, and the diameter of zinc particles of 3 mm; the yield strength of Al foam with the mean pore diameter of 3 mm decreases with the increase of porosities. Yield strengths of both Al foams with porosities of 63% and 67% rise with the increase of their cell diameters; when porosity increases from 60% to 71%，the residual Zn content in the Al foams reduces from 11.3% to 4.5%.
Key words: aluminum foam; infiltration; heat conduction; fabrication; compressive property
