These alloys are called sintered alloys or Sintered Aluminum Powders (SAP).
Sintered aluminum alloys have the following advantages:
Unique properties of the sintered aluminum alloys are result of presence of aluminum oxide (Al2O3) in the alloy structure.
Film of aluminum oxide covers each aluminum powder particle.
Some of sintered aluminum alloys besides aluminum oxide contain also aluminum carbide (Al4C3).
Concentration of aluminum oxide in the sintered aluminum alloys varies between 1 to 20%, depending on the thickness of the oxide film and on the powder particles sizes.
Aluminum sintered alloys are sintered at 1000-1200°F (540-650°C) for 10-20 minutes.
|Designation||Si,%||Cu,%||Mg,%||Lubrication,%||Aluminum with aluminum oxide,%|