Factors Influencing Preparing Micro-pore Composite Foam Aluminum by Vacuum Infiltration Method

Zhao Huoping; Yao Junping; Long Wenyuan; Zhang Lei

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Factors Influencing Preparing Micro-pore Composite Foam Aluminum by Vacuum Infiltration Method
Vol. 29, Issue 9, Pages: 854-857(2009)
Published： 2009 ，
DOI：

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[1]赵火平,尧军平,龙文元,张磊.真空渗流法制备微孔复合泡沫铝的工艺研究[J].特种铸造及有色合金,2009,29(09):854-857+782.

Zhao Huoping, Yao Junping, Long Wenyuan, et al. Factors Influencing Preparing Micro-pore Composite Foam Aluminum by Vacuum Infiltration Method. [J]. Special Casting & Nonferrous Alloys 29(9):854-857(2009)
[1]赵火平,尧军平,龙文元,张磊.真空渗流法制备微孔复合泡沫铝的工艺研究[J].特种铸造及有色合金,2009,29(09):854-857+782. DOI：

Zhao Huoping, Yao Junping, Long Wenyuan, et al. Factors Influencing Preparing Micro-pore Composite Foam Aluminum by Vacuum Infiltration Method. [J]. Special Casting & Nonferrous Alloys 29(9):854-857(2009) DOI：

摘要

采用真空渗流法制备微孔复合泡沫铝

探讨了各种工艺因素对渗流长度的影响规律

并从理论上进行了分析研究。结果表明

空心微珠分别经水和硝酸钇预处理后

渗流长度随空心微珠粒径的增大而显著增大

随铝液浇注温度、空心微珠及铸型预热温度的升高而急剧增大

随型腔横截面直径增大而明显减小

同时对型腔施加适当物理振动也能改善渗流长度。

Abstract

Micro-pore foam aluminum was prepared by vacuum infiltration

and effects of different process on infiltrated length were approached theoretically. The results indicate that the hollow micro-balls pretreated by water and yttrium nitrate

respectively

the infiltrated length is greatly increased with increasing in diameters of the micro-balls

and it is drastically raised with increasing in pouring temperature of aluminum alloy

preheating temperature of micro-balls and mould

however

it is decreased with increasing in cavity section diameters. In addition

infiltrated length is improved with exerting mechanical vibration on the cavity.