Methods and systems for compaction of powders in forming earth-boring tools

A method of forming a bit body of an earth-boring tool, the method comprising:

• mixing a plurality of hard particles and a plurality of particles comprising a matrix material to form a powder mixture;
• pressing the powder mixture with substantially isostatic pressure having an oscillating magnitude to form a green bit body;
• and
• at least partially sintering the green bit body.

A method of forming a bit body of an earth-boring tool, the method comprising:

• mixing a plurality of hard particles and a plurality of particles comprising a matrix material to form a powder mixture;
• providing the powder mixture in a deformable container;
• applying pressure to at least one exterior surface of the deformable container to press the powder mixture and form a green bit body;
• enabling drainage of liquid from the deformable container while applying pressure to the at least one exterior surface of the deformable container;
• and
• at least partially sintering the green bit body.

A system for forming a bit body of an earth-boring tool, the system comprising:

• a pressure chamber;
• a deformable container disposed within the pressure chamber configured to receive a powder mixture therein;
• and
• at least one conduit providing fluid communication between the interior region of the deformable container and the exterior of the pressure chamber.