Application of Pressureless Infiltration Technique for Processing and Characterizing Properties of 3-3 Al(Mg)/ZrO2 Composites

作者：Foroughi Ali^*; Tamizifar Morteza; Razavi Hossein; Aghaei Mohammad H; Sharifi Hassan

来源：Arabian Journal for Science and Engineering, 2014, 39(6): 4991-4996.

DOI：10.1007/s13369-014-1064-0

• Metal matrix composites
• ZrO2 foam
• Pressureless infiltration
• Electrical conductivity
• Hardness

3-3 Al(Mg)/ZrO2 composites based on Al-Mg alloy reinforced by ceramic interpenetrating network structure were fabricated via pressureless infiltration technology. Infiltration temperature and infiltration atmosphere are the key parameters distinctly effecting on infiltration processes. The composites were produced at atmospheric pressure by infiltrating 2-10 wt% magnesium content Al-Mg alloys into 25 % dense ZrO2 foams with highly interconnected porosity. The processing parameters of temperature a parts per thousand yen 890 A degrees C, and atmosphere, flowing N-2-Ar, were investigated to determine the processing Moreover, the increasing of Mg content (2-10 wt%) resulted in an increased amount of infiltration. The observation of the process shows that infiltration is faster at higher temperatures and N-2 partial pressures. Both optical and scanning electron microscopy have been used to characterize the composites. Electrical conductivity of composite reduces with increasing of Mg content in matrix and volume fraction of reinforcement. The use of ZrO2 preform with low cell size in composite results in the increase in hardness of Al-Mg/ZrO2 composite.

• 出版日期2014-6