I want to find the best powders to add to melt (Al).
this powders must have these properties:
1. increase hardness of produced composite
2. thermal resistance
3. matching with Al-matrix
4. High Tensile strength
5. wear resistance
The most significant factor for Metal matrix composites is high wet ability for matrix and second phase (ceramic particles). So particles such as SiC, TiC can wet easily with the metal matrix. The composite can have all the specification which you need, as mention above.
Dear Armin
thanks alot,i want to know which the other powders are used for this matrix
SiC, Al2O3, works in the improvement of the wear resistance, increase the hardness, the strength in some cases, there are works in other reinforcement materials like, graphite, actually in my group we are working in graphite and other oxides.- composites Al-oxide particles.
Esmaeil, the final mechanical properties depend of different factors like, particle size distribution, interface characteristics, microstructure in the matrix.
You can also try TiB2 and TiC particles with aluminium powders
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