Yes dear
I think stearic acid is good process control agent to mitigate the particles bonding or welding during the milling process.
This paper can be interesting for You:
https://www.researchgate.net/publication/225728797_Formation_of_a_nanodispersed_metal-matrix_structure_during_a_combined_high-energy_mechanical_alloying_of_powders_of_aluminum-based_SiC-containing_alloys
Article Formation of a nanodispersed metal-matrix structure during a...
Butyl alcohol could be selected as process control agent (PCA) for ball milling of powdered Al mixed with SiC. Isopropyl alcohol (IPA) could be alternatively considered; but noticing that it should contain at least around 0.2 wt% H2O (*). Moreover, it should not be heated, neither used for prolonged time with aluminium particles of high specific surface area. Otherwise, corrosion of the Al particles might become important. Methanol and ethanol can be expected to be generally more corrosive than IPA for the Al particles.
(*) It may be found convenient to ensure, say, around 2 wt% H2O.
By so called transient cavitations mechanism.
www.fracturae.com/index.php/MST/article/download/1136/1088
Best regards
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