Rotary interface for fluid assemblies and related methods of fabrication and use

A fluid assembly comprising:

• a vessel configured to house a fluid;
• a motor in operative communication with a shaft, and a first impeller mounted with respect to the shaft, the first impeller configured to be immersed in the fluid housed in the vessel so that when rotary motion from the motor is transferred to the first impeller, the first impeller moves and agitates the fluid;
• a porous housing surrounding at least a portion of the first impeller;
• wherein filtrate from the fluid can be extracted from the vessel via the porous housing;
• and
• wherein the first impeller is porous or non-porous.

A filtration method comprising:

• charging a fluid to a vessel;
• providing a motor in operative communication with a shaft;
• mounting a first porous impeller with respect to the shaft;
• immersing the first porous impeller in the fluid housed in the vessel;
• wherein when rotary motion from the motor is transferred to the first porous impeller, the first porous impeller moves and agitates the fluid;
• and
• filtering the fluid with the porous impeller to create a filtrate;
• and
• extracting the filtrate from the fluid via the first porous impeller.

A coating method comprising:

• disposing a porous metal substrate in a coating solution that comprises metallic or nonmetallic coating particles;
• subjecting the porous metal substrate to a positive pressure to drive the coating solution through the porous metal substrate;
• or alternatively
• subjecting the porous metal substrate to a negative pressure to drive the coating solution through the porous metal substrate;
• or alternatively
• disposing the metallic or nonmetallic coating particles on a surface of the porous metal substrate via a process of dipping the porous metal substrate into the coating solution while removing the solvent at a controlled rate to deposit a coating layer on the porous metal substrate to form a coated porous metal member.

A coated article comprising:

• a porous metal substrate having disposed thereon a coating layer comprising metallic or non-metallic coating particles;
• wherein the coating layer has a thickness of 20 to 200 micrometers;
• and
• wherein the porous metal substrate with the coating layer disposed thereon has an average pore size of 50 nanometers to 60 micrometers.