摘要
在热传计算的基础上,采用锌粒子为前驱体、铝熔体为渗流体,通过氩气渗流制备通孔泡沫铝;对泡沫铝的制备、压缩性能及锌残余量进行研究。结果表明:滑石粉隔热层厚度与渗流时间之间的关系为x2=7.35×10-8τ;优化的渗流工艺如下:渗流温度740℃、锌粒子预热温度220℃、锌粒子直径3 mm;平均孔径为3 mm的泡沫铝的屈服强度随孔隙率的增加而减小;孔隙率为63%和67%的泡沫铝的屈服强度都随孔径的增大而提高;泡沫铝孔隙率从60%提高到71%,锌残余量从11.3%降低到4.5%。
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%.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2011年第3期597-603,共7页
The Chinese Journal of Nonferrous Metals
基金
云南省人才培养项目(2006PY01-06)
云南省国际合作项目(2006GH21)
云南省应用基础研究重点项目(2010CC004)
关键词
泡沫铝
渗流
热传导
制备
压缩性能
aluminum foam
infiltration
heat conduction
fabrication
compressive property
