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1. Ceramic Nanoparticles

   Linked via "powders"

   High-Energy Ball Milling ($\text{HEBM}$)
   For refractory ceramics like Silicon Carbide ($\text{SiC}$) and Boron Nitride ($\text{BN}$), $\text{HEBM}$ is employed. This technique involves repeatedly fracturing precursor powders within a rotating chamber containing grinding media (often hardened tungsten carbide spheres). The mechanism relies on mechanical alloying under immense localized [str…

2. Microcrystalline

   Linked via "powder metallurgy"

   Metallurgy and Powder Sintering
   In powder metallurgy, rapid cooling of molten alloys (e.g., certain steel variants or specialized aluminum-lithium systems) can produce microcrystalline or nanocrystalline grain structures. These materials exhibit enhanced mechanical properties, notably increased yield strength ($\sigmay$))/}), explained by the [Hal…