302 results about "Promethium" patented technology

A coating applied as a two layer system. The outer layer is an oxide of a group IV metal selected from the group consisting of zirconium oxide, hafnium oxide and combinations thereof, which are doped with an effective amount of a lanthanum series oxide. These metal oxides doped with a lanthanum series addition comprises a high weight percentage of the outer coating. As used herein, lanthanum series means an element selected from the group consisting of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu) and combinations thereof, and lanthanum series oxides are oxides of these elements. When the zirconium oxide is doped with an effective amount of a lanthanum series oxide, a dense reaction layer is formed at the interface of the outer layer of TBC and the CMAS. This dense reaction layer prevents CMAS infiltration below it. The second layer, or inner layer underlying the outer layer, comprises a layer of partially stabilized zirconium oxide.

The invention provides a high performance lithium ion battery anode material lithium manganate and a preparation method of the material. The lithium manganate is a doped lithium manganate LiMn2-yXy04 which is doped with one kind or a plurality of other metal elements X, wherein X element is at least one kind selected form the group of aluminium, lithium, fluorine, silver, copper, chromium, zinc, titanium, bismuth, germanium, gallium, zirconium, stannum, silicon, cobalt, nickel, vanadium, magnesium, calcium, strontium, barium and rare earth elements lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, and y is larger than 0 but less than or equal to 0.11. The lithium ion battery anode material lithium manganate provided in the invention has extraordinary charge and discharge cycle performance both in the environments of normal temperature and high temperature. According to the invention, the preparation method of the material is a solid phase method, the operation is simple and controllable and the cost is low so that it is easy to realize large-scale productions.

Methods for making barrier coatings including a taggant involving providing a barrier coating, and adding from about 0.01 mol % to about 30 mol % of a taggant to the barrier coating wherein the taggant comprises a rare earth element selected from lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, ytterbium, and lutetium, salts thereof, silicates thereof, oxides thereof, zirconates thereof, hafnates thereof, titanates thereof, tantalates thereof, cerates thereof, aluminates thereof, aluminosilicates thereof, phophates thereof, niobates thereof, borates thereof, and combinations thereof.

A turbine engine component is provided which has a substrate and a thermal barrier coating applied over the substrate. The thermal barrier coating comprises alternating layers of yttria-stabilized zirconia and a molten silicate resistant material. The molten silicate resistant outer layer may be formed from at least one oxide of a material selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, indium, zirconium, hafnium, and titanium or may be formed from a gadolinia-stabilized zirconia. If desired, a metallic bond coat may be present between the substrate and the thermal barrier coating system. A method for forming the thermal barrier coating system of the present invention is described.

To increase total power in a betavoltaic device, it is desirable to have greater radioisotope material and/or semiconductor surface area, rather than greater radioisotope material volume. An example of this invention is a high power density betavoltaic battery. In one example of this invention, tritium is used as a fuel source. In other examples, radioisotopes, such as Nickel-63, Phosphorus-33 or promethium, may be used. The semiconductor used in this invention may include, but is not limited to, Si, GaAs, GaP, GaN, diamond, and SiC. For example (for purposes of illustration/example, only), tritium will be referenced as an exemplary fuel source, and SiC will be referenced as an exemplary semiconductor material. Other variations and examples are also discussed and given.

Rare earth compositions comprising nanoparticles, methods of making nanoparticles, and methods of using nanoparticles are described. The compositions of the nanomaterials discussed may include scandium (Sc), yttrium (Y), lanthanum(La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium(Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu). The nanoparticles can be used to make organometallics, nitrates, and hydroxides. The nanoparticles can be used in a variety of applications, such as pigments, catalysts, polishing agents, coatings, electroceramics, catalysts, optics, phosphors, and detectors.

Coating systems on a surface of a CMC component, such as a CMC shroud, are provided. The coating system can include an environmental barrier coating on the surface of the CMC component and an abradable coating on the environmental barrier coating and defining an external surface opposite of the environmental barrier coating. The abradable coating includes a compound having the formula: Ln₂ABO₈, where Ln comprises scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or mixtures thereof; A comprises Si, Ti, Ge, or a combination thereof; and B comprises Mo, W, or a combination thereof. In one embodiment, the abradable coating has a first coefficient of thermal expansion at an interface with the environmental barrier coating that changes to a second coefficient of thermal expansion at its external surface. Methods are also provided for applying an abradable coating onto a CMC component.

The invention discloses a making method of cerium-zirconium based nanometer composite oxide, which comprises the following steps: adopting low-chlorine zirconium carbonate and low-chlorine cerium carbonate as main raw material; adding rare earth element such as lanthanum, promethium, yttrium, neodymium and so on; proceeding solid-solid reaction to prepare; obtaining the solid solution with cubic crystal. The fresh specific area of cerium-zirconium based nanometer composite oxide is 100-150m2/g with aged specific surface area at 45-60m2/g after sintering 2h under 900 deg. c, which simplifies the technical course and equipment with low energy consumption.

The invention provides a rare earth doped hydroxyfluorapatite monocrystal nanometer wire and a preparation method thereof. The preparation method comprises the following steps: under an alkaline condition, enabling calcium nitrate, phosphate, sodium fluoride and rare earth nitrate to react with one another, thereby acquiring a hydroxyfluorapatite monocrystal nanometer wire, wherein the rare earthnitrate is at least one of lanthanum nitrate, cerous nitrate, praseodymium nitrate, neodymium nitrate, promethium nitrate, samarium nitrate, europium nitrate, gadolinium nitrate, terbium nitrate, dysprosium nitrate, holmium nitrate, erbium nitrate, thulium nitrate, ytterbium nitrate and lutecium nitrate. A monocrystal nanometer wire prepared by using the method can be further processed into a repairing material for biologic sclerous tissues, such as artificial bone, bone cement, and the like, and can be used for the basic research and clinical practice in the fields related to biological materials, organizational engineering, and the like.

A method for cracking hydrocarbon, comprises: providing steam and hydrocarbon; and feeding steam and hydrocarbon into a reactor accessible to hydrocarbon and comprising a perovskite material of formula A_aB_bC_cD_dO_3-δ, wherein 0<a<1.2, 0≦b≦1.2, 0.9<a+b≦1.2, 0<c<1.2, 0≦d≦1.2, 0.9<c+d≦1.2, −0.5<δ<0.5; A is selected from calcium, strontium, barium, and any combination thereof; B is selected from lithium, sodium, potassium, rubidium and any combination thereof; C is selected from cerium, zirconium, antimony, praseodymium, titanium, chromium, manganese, ferrum, cobalt, nickel, gallium, tin, terbium and any combination thereof; and D is selected from lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, ebium, thulium, ytterbium, lutetium, scandium, titanium, vanadium, chromium, manganese, ferrum, cobalt, nickel, copper, zinc, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, cadmium, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, gallium, indium, tin, antimony and any combination thereof.

The invention discloses a high-strength steel plate for light goods shelves and a forging process thereof. The high-strength steel plate for the light goods shelves is composed of, by weight percentage, 0.22-0.24% of carbon, 0.32-0.38% of boron, 0.52-0.54% of palladium, 0.02-0.04% of selenium, 0.02-0.04% of arsenic, 3.23-3.25% of rubidium, 0.45-0.48% of vanadium, 5.36-5.39% of titanium, 6.63-6.67% of copper, 4.57-4.59% of tin, 8.7-8.9% of chromium, 0.06-0.08% of molybdenum, 8.78-8.79% of nickel, 0.36-0.38% of barium, 3.42-3.44% of magnesium, 3.21-3.23% of neodymium, 0.25-0.35% of promethium, 0.45-0.48% of praseodymium, 1.2-1.5% of holmium, 0.04-0.06% of dysprosium, balancing Fe and inevitable impurities.

A metallic article is prepared by first furnishing at least one nonmetallic precursor compound, wherein all of the nonmetallic precursor compounds collectively containing the constituent elements of the metallic article in their respective constituent-element proportions. The constituent elements together form a titanium-base alloy having a stable-oxide-forming additive element therein, such as magnesium, calcium, scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, and mixtures thereof. The stable-oxide-forming additive element forms a stable oxide in a titanium-based alloy. At least one additive element is present at a level greater than its room-temperature solid solubility limit in the titanium-base alloy. The precursor compounds are chemically reduced to produce an alloy material, without melting the alloy material. The alloy material may be consolidated. The alloy material, or consolidated metallic article, is thereafter desirably exposed to an oxygen-containing environment at a temperature greater than room temperature.

The invention discloses a rare earth rubber vulcanization accelerator, and a preparation method and application thereof. The accelerator is prepared by compounding rare earth ions and carboxylic acid substituted dithiocarbamate, wherein the rare earth ions may be one or the mixture of more than one of 14 rare earth elements, except promethium which is a radioactive element, with the atomic numbers of 57 to 71 in the periodic table of elements. The rare earth vulcanization accelerator of the invention is added into a rubber formula without adding the vulcanization active agents of stearic acid and zinc oxide to achieve good vulcanization effect and prepare a rubber composite material with high comprehensive mechanical properties which are remarkably superior to those of the accelerator zinc diethyl dithiocarbamate (ZDC) commonly used in industry at present in the same proportion, is a carbamate rare earth compound of primary amine, does not produce nitrite in a vulcanization process, and is environmentally-friendly.

The invention belongs to the field of metallic functional materials, and particularly relates to a rear earth-contained high-permeability Ni-Fe soft magnetic alloy, a preparation method and purposes thereof. The alloy as weight percentage comprises the following components: 40-83 percent nickel (Ni), 0.38-0.56 percent manganese (Mn), 0.24-4.0 percent silicon (Si), 3.0-5.7 percent molybdenum (Mo), 2.0-8.2 percent copper (Cu), 0.02-15 percent rare earth element Re in lanthanide series, carbon less than 0.015 percent, phosphorus less than 0.015 percent and sulfur less than 0.015 percent, as well as iron and inevitable impurities, which occupy the less percentage, wherein the Re is at least one of the elements among lanthanum (La), cerium (Ce), seodymium (Pr), neodymium (Nd), promethium (Pm), Samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm),Ytterbium (Yb), lutetium (Lu), Scandium (Sc) and yttrium (Y) which are the rare earth elements in the lanthanide series. According to the invention, the suitable rare earth elements are added and the components of the alloy are reasonably adjusted, the Ni-Fe alloy has good alloying effect and improves the original microscopic structure, thereby having improved integrated magnetic property and mechanical property.

The invention discloses a wear-resistant metal coating for a hydraulic cylinder and a preparation method of the wear-resistant metal coating. The wear-resistant metal coating for the hydraulic cylinder comprises the following components in mass percent: 0.25-0.27% of carbon, 1.26-1.28% of magnesium, 2.25-2.28% of silicon, 1.23-1.25% of vanadium, 17.33-17.35% of nickel, 0.13-0.15% of manganese, 0.22-0.25% of scandium, 2.84-2.86% of copper, 2.56-2.58% of selenium, 0.72-0.74% of tungsten, 2.72-2.75% of titanium, 0.42-0.45% of zirconium, 2.45-2.48% of lanthanum, 3.54-3.56% of neodymium, 2.33-2.35% of promethium, 1.22-1.24% of europium, 4.42-4.45% of gadolinium, 3.21-3.24% of an auxiliary, and the balance of iron.

The invention provides a rare metal-based sludge activated carbon and application thereof in the removal of sulfur, ammonia and phosphorus. The rare metal-based sludge activated carbon includes sludge activated carbon and metal elements such as manganese, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium and the like, and is specifically prepared by a method comprising the following steps: mixing pyrolusite powder with activated sludge, adding a zinc chloride compounded activating agent into the mixture, activating the mixture at a high temperature, carbonizing the mixture to obtain pyrolusite compounded activated sludge, mixing the activated sludge with rare earth oxide powder and a chelating agent after the activated sludge is modified by potassium hydroxide solution, heating the mixture in a microwave oven, carbonizing the mixture to obtain rare earth compounded activated sludge, and mixing the compounded activated sludge to obtain a product. The rare metal-based sludge activated carbon prepared by the method has the advantages of high activity, high porosity, uniform pore size distribution, high adsorption capacity, capability of chelating a plurality of metals and microorganisms, high capacity of adsorbing sulfur, ammonia and phosphorus and high rate of removing the sulfur, the ammonia and the phosphorus in sewage and waste.

The invention discloses an anticorrosion coating for a metal surface and a preparation method of the anticorrosion coating. The anticorrosion coating comprises the following components in mass percent: 0.23-0.25% of carbon, 4.62-4.65% of manganese, 7.52-7.58% of chromium, 6.43-6.45% of vanadium, 8.52-8.55% of nickel, 0.51-0.55% of strontium, 1.24-1.27% of niobium, 1.42-1.45% of molybdenum, 2.22-2.24% of zirconium, 0.25-0.29% of tungsten, 4.32-4.35% of zinc, 3.45-3.48% of lanthanum, 12.27-12.29% of neodymium, 5.43-5.45% of promethium, 2.2-2.4% of gadolinium, 3.62-3.65% of terbium, 3.5-3.8% of an auxiliary, and the balance of iron.

The invention provides a solid acid catalyst as well as a preparation method and an application of the solid acid catalyst. The catalyst is applied to the Baeyer-Villiger oxidation reaction to catalyze the conversion of cyclic ketones into lactones; the catalyst has the advantages of high active site utilization rate, good selectivity, good stability, and easy recycling. The solid acid catalyst is composed of two parts, namely the active ingredient of the catalyst and a carrier, wherein the carrier is zirconium hydrogen phosphate nanosheet; the active ingredient is one or the combination of several of lanthanum, yttrium, aluminum, neodymium, cerium, chromium, zinc, indium, tin, scandium, praseodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium metal ions; the molar ratio of the metal component to the zirconium hydrogen phosphate in the solid acid catalyst is (1: 5) to (5: 1).

The invention discloses a high-melt-strength polypropylene material, and a preparation method and application thereof. The polypropylene material is prepared from 65-99.79 parts of polypropylene, 0.01-10 parts of initiator, 0.1-10 parts of polyfunctional group monomer, 0.1-5 parts of free radical stabilizer and 0-10 parts of inert processing assistant, wherein the free radical stabilizer is a lanthanide rare-earth oxide, carboxylate of lanthanide rare-earth element, naphthenate complex of lanthanide rare-earth element or dithiocarbamic acid rare-earth compound. The lanthanide rare-earth element does not include promethium. The proportion of the polypropylene, initiator and polyfunctional group monomer is controlled, the grafting reaction time is prolonged, and the rare-earth substances are utilized to inhibit the degradation of the polypropylene and prolong the service life of the free radical, thereby obtaining long-branched-chain high-melt-strength polypropylene with stable performance and enhancing the service performance of the conventional polypropylene. The method disclosed by the invention is easy to operate and convenient to control, and can easily implement industrial production.

Disclosed are uses of rare earth element selected from the group consisting of cerium (Ce), praseodymium (Pr), promethium (Pm), europium (Eu), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), scandium (Sc), yttrium (Y), lanthanum (La), neodymium (Nd), samarium (Sm), gadolinium (Gd), ruthenium (Lu) and mixtures thereof, or a salt or an oxide thereof for preventing hair loss, promoting hair regrowth and hair growth, removing and preventing dandruff, or promoting black hair formation.