6 results about "Erbium(III) oxide" patented technology

The invention belongs to the technical field of hydrogen energy resources, and particularly relates to an oxide composite coating as well as a preparation method and application thereof. The oxide composite coating provided by the invention comprises a chromium layer, a chromium / chromium oxide composite layer, a chromium oxide layer, a chromium oxide / aluminum oxide composite layer, an aluminum oxide layer, an aluminum oxide / erbium oxide composite layer and an erbium oxide layer which are sequentially stacked, the mass percentage content of chromium in the chromium / chromium oxide composite layer is reduced in a gradient manner; the mass percentage content of chromium oxide in the chromium oxide / aluminum oxide composite layer is reduced in a gradient manner; the mass percentage content of aluminum oxide in the aluminum oxide / erbium oxide composite layer is reduced in a gradient manner. A composite transition layer with gradient composition change is introduced into the interface of the substrate / oxide layer and the interface of the oxide layer / oxide layer, so that the obvious interface is eliminated, and the interlayer bonding force is greatly improved. Chromium oxide, aluminum oxide and erbium oxide are all excellent hydrogen barrier materials, the multilayer structure and the interface thereof can effectively prolong the permeation path of hydrogen, and the hydrogen permeation barrier coefficient is improved.

The invention provides an erbium-ytterbium co-doped optical fiber with a highly phosphorus-doped fiber core as well as a preparation method and application of the erbium-ytterbium co-doped optical fiber. The erbium-ytterbium co-doped optical fiber is sequentially provided with the fiber core, an inner cladding and a coating from inside to outside, the molar content of phosphorus pentoxide in the fiber core is 10 mol%-15 mol%, the molar content of erbium oxide in the fiber core is 0.02 mol%-0.12 mol%, the molar content of ytterbium oxide in the fiber core is 1 mol%-1.5 mol%, and the balance is silicon dioxide; the difference value of the molar content of phosphorus pentoxide in any two parts of the fiber core is smaller than or equal to 0.8 mol%. According to the erbium-ytterbium co-doped optical fiber, the content of phosphorus pentoxide in all positions in the fiber core is uniformly distributed while the fiber core is doped with high phosphorus content, and the gain performance and the gain consistency of the erbium-ytterbium co-doped optical fiber are improved.

Described are aluminate compositions that contain erbium aluminum oxide as a perovskite crystalline structure; methods of preparing aluminate compositions that contain erbium aluminum perovskite; articles that contain erbium aluminum perovskite, and methods of preparing and methods of using articles that contain erbium aluminum perovskite.

The invention belongs to the technical field of dental repair materials, and particularly relates to a high-performance ceramic block and a preparation method thereof. The high-performance ceramic block is prepared from the following raw materials in parts by mass: 61 to 71 parts of silicon dioxide, 11 to 17 parts of lithium oxide, 2.5 to 5.5 parts of potassium oxide, 2 to 4.5 parts of aluminum oxide, 2.5 to 5.5 parts of phosphorus pentoxide, 1 to 3.5 parts of boric oxide, 0.3 to 4 parts of zinc oxide, 0.1 to 2.5 parts of zirconium dioxide, 0.1 to 1 part of vanadium oxide, 0.1 to 1 part of cerium oxide, 0.1 to 2 parts of erbium oxide, 0.1 to 1 part of manganese dioxide and 0.1 to 2 parts of strontium carbonate. And 0.1-1 part of lanthanum oxide. By designing the raw material composition and proportioning and combining the preparation method, the obtained ceramic block has the characteristics of wide operation temperature range and high strength. The product provided by the invention has excellent biocompatibility, transparency and glossiness, can better simulate the appearance of natural teeth, and is suitable for repair scenes with relatively high requirements on beauty.

The present application relates to the field of environmental barrier coatings or integrated thermal environmental barrier coatings, and particularly relates to a yttrium-holmium-erbium-ytterbium non-equiatomic high-entropy rare earth monosilicate ceramic material and a preparation method thereof. x Ho (1‑x) / 3 Er (1‑x) / 3Yb (1‑x) / 3 )2SiO5, wherein the atomic molar amount x of Y ranges from 0.05 to 0.95. The yttria powder, holmia powder, erbium oxide powder, ytterbia powder and silica powder are used as raw materials, wet mixing is performed, pressureless sintering is performed in an air atmosphere, and then sintering is performed in a hot-pressing furnace with a protective atmosphere, so that the high-entropy rare earth monosilicate ceramic material with high purity and excellent high-temperature thermal physical properties is obtained.

The application discloses a hydrogen barrier coating on a surface of a metal hydride material and a preparation method and application thereof, and belongs to the technical field of nuclear reactor control materials. The preparation method comprises the following steps: performing pretreatment on the surface of a metal hydride base; and forming the hydrogen barrier coating of at least one of an erbium oxide coating, an aluminum oxide coating and a mixed layer of the erbium oxide and the aluminum oxide on the metal hydride base by adopting a sol-gel method and / or a thermal spraying method. The hydrogen barrier coating on the surface of the metal hydride material provided by the application is different from the traditional mode of mixing the erbium oxide into a nuclear fuel pellet and placing the hydrogen barrier coating on the surface of a cladding, the application places the erbium in the form of the erbium oxide hydrogen barrier coating on the surface of the metal hydride, simultaneously adds or adjusts the content of the aluminum oxide to meet the demand of the hydrogen barrier performance, forms the metal hydride moderating material containing the hydrogen barrier coating, and can simultaneously realize the purposes of the continuous high-temperature moderating capability of the metal hydride moderating material and the reactivity control.