Ceramic Materials with Improved Mechanical Properties and Electrical Conductivity
Improved mechanical properties, including high fracture toughness High electrical conductivityManufacturing process is capable of interspersing nanotubes at high density, and takes lesstime than previous methods
Any application where it is desirable to have an electrical conductor operating under conditions of high mechanical, thermal, or chemical stress. Examples: o Heat engines o Cutting tools o Spacecraft o Wear and friction surfaces o Nanoscale electronics o Microelectromechanical systems
Ceramic materials are widely utilized in environments of extreme temperature, mechanical stress, and chemic reactivity. Unfortunately, ceramics suffer from brittleness, and are electrical insulators, limiting their use in electronic devices. However, carbon nanotubes, which are known to have high stiffness and strength, have been explored as fillers to improve the mechanical properties of ceramics. Researchers at UC Davis have developed a ceramic composite material that includes single-wall carbon nanotubes as a filler. Interspersing the nanotubes throughout the matrix results in a material that exhibits high electrical conductivity and superior mechanical properties, including high fracture toughness. In addition, the process developed for manufacturing this material enables the nanotubes to be interspersed at a high density, yet with a reduced manufacturing time relative to other methods. The combination of improvements described above yields a material that is suitable for use in electrical devices, systems, and applications that operate in extreme environments and where low failure rates are critical.
Patent Number: US6875374B1
Application Number: US2003377137A
Inventor: Zhan, Guodong | Kuntz, Joshua D. | Mukherjee, Amiya K.
Priority Date: 26 Feb 2003
Priority Number: US6875374B1
Application Date: 26 Feb 2003
Publication Date: 5 Apr 2005
IPC Current: C04B0035053 | C04B0035119 | C04B003518 | C04B0035443 | C04B003546 | C04B0035488 | C04B003550 | C04B003552 | C04B003580 | H01B000100 | H01B000114
US Class: 252502 | 2525181 | 264430 | 423445B | 4235921 | 5010952 | 501099 | 501100 | 977750 | 977776 | 977DIG1
Assignee Applicant: The Regents of the University of California
Title: Ceramic materials reinforced with single-wall carbon nanotubes as electrical conductors
Usefulness: Ceramic materials reinforced with single-wall carbon nanotubes as electrical conductors
Summary: Conducting electric current in electrical devices, systems and applications.
Novelty: Improved conduction of electric current, comprises interposing composite material containing metal oxide and single-wall carbon nanotubes between terminals
Chemical/Material
Chemical/Material Application
6875374
Additional Technologies by these Inventors Tech ID/UC Case 23600/2003-299-0 Related Cases 2003-299-0
USA
