The present invention is directed to composite metal foams comprising hollow metallic spheres and a solid metal matrix. The composite metal foams show high strength, particularly in comparison to previous metal foams, while maintaining a favorable strength to density ratio. The composite metal foams can be prepared by various techniques, such as powder metallurgy and casting.
Composite Metal Foam And Methods Of Preparation Thereof
The present invention is directed to composite metal foams comprising hollow metallic spheres and a solid metal matrix. The composite metal foams show high strength, particularly in comparison to previous metal foams, while maintaining a favorable strength to density ratio. The composite metal foams can be prepared by various techniques, such as powder metallurgy and casting.
Processing Of Biocompatible Coating On Polymeric Implants
The present invention provides polymeric substrates comprising a biocompatible coating and methods of preparation thereof. In particular, the coating may be a ceramic material, especially a calcium phosphate material, which may be functionally graded. The invention provides the ability to apply high quality coatings to polymeric substrates without damaging the substrate (e. g. , melting the polymeric material). The functionally graded coating can provide crystalline calcium phosphate near the coating interface with the substrate and provide amorphous calcium phosphate at the outer surface of the coating.
Functionally Graded Biocompatible Coating And Coated Implant
Afsaneh Rabiei - Raleigh NC, US Jerome J. Cuomo - Cary NC, US Brent C. Thomas - Lillington NC, US
Assignee:
North Carolina State University - Raleigh NC
International Classification:
A61F 2/00 A61K 9/16
US Classification:
424489, 424423
Abstract:
The present invention provides a biocompatible coating comprising calcium phosphate that is functionally graded across the thickness of the coating. The coating, which preferably includes hydroxyapatite, is particularly useful for coating implants, such as dental or orthopedic implants. The functionally graded coating is generally crystalline near the interface with the surface of the implant, with crystallinity and crystal diameter decreasing toward the outer layer of the coating. The invention further provides methods for preparing a coated implant comprising a functionally graded calcium phosphate coating thereon.
Functionally Graded Biocompatible Coating And Coated Implant
The present invention provides a biocompatible coating comprising calcium phosphate that is functionally graded across the thickness of the coating. The coating, which preferably includes hydroxyapatite, is particularly useful for coating implants, such as dental or orthopedic implants. The functionally graded coating is generally crystalline near the interface with the surface of the implant, with crystallinity and crystal diameter decreasing toward the outer layer of the coating. The invention further provides methods for preparing a coated implant comprising a functionally graded calcium phosphate coating thereon. Furthermore, an antimicrobial agent can be dispersed within the calcium phosphate coating at discrete locations to provide for a coating with tailored release of the antimicrobial agent.
Composite Metal Foam And Methods Of Preparation Thereof
The present invention is directed to composite metal foams comprising hollow metallic spheres and a solid metal matrix. The composite metal foams show high strength, particularly in comparison to previous metal foams, while maintaining a favorable strength to density ratio. The composite metal foams can be prepared by various techniques, such as powder metallurgy and casting.
Composite Metal Foam And Methods Of Preparation Thereof
The present invention is directed to composite metal foams comprising hollow metallic spheres and a solid metal matrix. The composite metal foams show high strength, particularly in comparison to previous metal foams, while maintaining a favorable strength to density ratio. The composite metal foams can be prepared by various techniques, such as powder metallurgy and casting.
Composite Metal Foam And Methods Of Preparation Thereof
The present invention is directed to composite metal foams comprising hollow metallic spheres and a solid metal matrix. The composite metal foams show high strength, particularly in comparison to previous metal foams, while maintaining a favorable strength to density ratio. The composite metal foams can be prepared by various techniques, such as powder metallurgy and casting.
Northeastern University Jan 2002 - Jul 2002
Visiting Professor
North Carolina State University Jan 2002 - Jul 2002
Professor of Mechanical and Aerospace Engineering
Harvard University Dec 1997 - Jul 2000
Post Doctorate Fellow
Azarab Industries Company 1990 - 1994
Head of the Material Engineer Group
Shahid Bahonar Copper Industries Co. (Csp) 1988 - 1990
Materials and Production Engineer
Education:
The University of Tokyo 1994 - 1997
Doctorates, Doctor of Philosophy, Philosophy
Sharif University of Technology 1978 - 1986
Bachelors
Skills:
Leadership Research Advanced Materials Manufacturing Failure Analysis Biomaterials Coating Metal Foams Solid Mechanics Materials Science Characterization Materials
Over a decade ago, engineer Afsaneh Rabiei of North Carolina State University invented Composite Metal Foam (CMF)a material made of hollow metal bubbles embedded in steel, titanium, aluminum, or other alloys. From air and space travel to defense, the exceptionally strong and lightweight material
Date: Feb 17, 2025
Category: Technology
Source: Google
Video shows what Metal Foam Armor can do to a bullet designed to pierce armor
imes, "The creation of metal foam armor has so many uses and it can save so many lives. This metal foam armor is the brain child of Afsaneh Rabiei, who is a mechanical and aerospace engineer professor at North Carolina State and the video above shows what it can to a bullet designed to pierce armor.
Date: Apr 11, 2016
Category: Sci/Tech
Source: Google
Super-strong Armor Build By Metal Foam can Disintegrate Bullets
We could stop the bullet at a total thickness of less than an inch, while the indentation on the back was less than 8 millimeters. To put that in context, the NIJ standard allows up to 44 millimeters indentation in the back of an armor, says Afsaneh Rabiei of North Carolina State University.
Date: Apr 11, 2016
Category: Sci/Tech
Source: Google
Bullet-stopping foam? Metal foam could destory speeding bullets in their tracks, scientists finds
Afsaneh Rabiei, a professor of mechanical & aerospace engineering at North Carolina State University, said, We could stop the bullet at a total thickness of less than an inch, while the indentation on the back was less than 8 millimeters.