CAS: 12007-25-9; Magnesium Boride

专利信息

专利号:US-6830738-B1
优先权日:2002-04-04
标 题:Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions
发明人：LUPINETTI ANTHONY J; GARCIA EDUARDO; ABNEY KENT D
权利人:US ENERGY
摘要:The synthesis of actinide tetraborides including uranium tetraboride (UB 4 ), plutonium tetraboride (PuB 4 ) and thorium tetraboride (ThB 4 ) by a solid-state metathesis reaction are demonstrated. The present method significantly lowers the temperature required to ≦850° C. As an example, when UCl 4 is reacted with an excess of MgB 2 , at 850° C., crystalline UB 4 is formed. Powder X-ray diffraction and ICP-AES data support the reduction of UCl 3 as the initial step in the reaction. The UB 4 product is purified by washing water and drying.

专利号:US-6511943-B1
优先权日:2002-03-13
标题:Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP)
发明人：SERQUIS ADRIANA C; ZHU YUNTIAN T; MUELLER FREDERICK M; PETERSON DEAN E; LIAO XIAO ZHOU
权利人:UNIV CALIFORNIA
摘要:A process of preparing superconducting magnesium diboride powder by heating an admixture of solid magnesium and amorphous boron powder or pellet under an inert atmosphere in a Mg:B ratio of greater than about 0.6:1 at temperatures and for time sufficient to form said superconducting magnesium diboride. The process can further include exposure to residual oxygen at high synthesis temperatures followed by slow cooling. In the cooling process oxygen atoms dissolved into MgB 2 segregated to form nanometer-sized coherent Mg(B,O) precipitates in the MgB 2 matrix, which can act as flux pinning centers.

专利号:US-2024097109-A1
优先权日:2021-02-11
标 题:Bottom-Up, Scalable Synthesis Of Oxide-Based Sub-Nano And Nanofilaments And Nanofilament-Based Two-Dimensional Flakes And Mesoporous Powders
发明人：BARSOUM MICHEL W; BADR HUSSEIN OSAMA
权利人:UNIV DREXEL
摘要:Provided are methods to convert—through a bottom-up approach—binary and ternary titanium carbides, nitrides, borides, phosphides, aluminides, and silicides into lepidocrocitic nanofilaments that in some cases self-assemble into 2D flakes by immersing them in a quaternary ammonium solution at moderate temperatures. The resulting flakes can comprise nanofilaments in cross-section, some of which nanofilaments can be few microns long in some instances.

专利号:WO-2022174264-A1
优先权日:2021-02-11
标题:Bottom-up, scalable synthesis of oxide-based sub-nano and nanofilaments and nanofilament-based two-dimensional flakes and mesoporous powders
发明人：BADR HUSSEIN O; BARSOUM MICHEL W
权利人:UNIV DREXEL
摘要:Provided are methods to convert - through a bottom-up approach – binary and ternary titanium carbides, nitrides, borides, phosphides, aluminides, and silicides into nanofilaments that in some cases self-assemble into 2D flakes by immersing them in a quaternary ammonium solution at moderate temperatures. The resulting flakes can be C-containing anatase-based layers that are in turn comprised of nanofilaments in cross-section, some of which nanofilaments can be few microns long in some instances. Electrodes made from these materials performed well in energy systems. The materials also reduce the viability of some cancer cells. Also provided are mesoporous materials, devices, and related methods.

专利号:US-2006057050-A1
优先权日:2002-01-11
标题 :Synthesis of boron carbide nanoparticles
发明人：REN ZHIFENG; WEN JIAN G; LAO JING Y; LI WENZHI; CHEN SHUO
权利人:TRUSTEES BOSTON COLLEGE
摘要:The present invention relates generally to reinforced carbon nanotubes, and more particularly to reinforced carbon nanotubes having a plurality of microparticulate carbide or oxide materials formed substantially on the surface of such reinforced carbon nanotubes composite materials. In particular, the present invention provides reinforced carbon nanotubes (CNTs) having a plurality of boron carbide nanolumps formed substantially on a surface of the reinforced CNTs to reinforce the CNTs, enabling their use as effective reinforcing fillers for matrix materials to give high-strength composites. The present invention also provides methods for producing carbide reinforced CNTs.

专利号:US-7247349-B2
优先权日:2000-06-07
标题 :Method of self-assembly and optical applications of crystalline colloidal patterns on substrates
发明人：OZIN GEOFFREY ALAN; YANG SAN MING; MIGUEZ HERNAN
权利人:UNIV TORONTO
摘要:This invention describes methods of synthesis and applications of planarized photonic crystals. Provided are simple, quick, reproducible and inexpensive methods that combine self-assembly and lithography to achieve the first examples of vectorial control of thickness, structure, area, topology, orientation and registry of colloidal crystals that have been patterned in substrates for use in lab-on-chip and photonic chip technologies. 1-, 2 and 3-D colloidal crystals patterned either on or within substrates can be used for templating inverted colloidal crystal replica patterns made of materials like silicon as well as building micron scale structural defects in such colloidal crystals. These photonic crystals can form the basis of a range of optical devices that may be integrated within photonic chips and coupled to optical fibers and/or waveguides to enable development of highly compact planarized optically integrated photonic crystal devices and circuits for use in future all-optical computers and optical telecommunication systems.