15 results about "Y alloy" patented technology

The invention discloses a preparation method of a molten salt corrosion resistant coating on the surface of a TiAl alloy, relates to the technical field of surface treatment, and aims to solve the technical problems of low binding force between an existing TiAl alloy matrix and a coating interface and poor corrosion resistance of the coating. The preparation method of the molten salt corrosion resistant coating on the surface of the TiAl alloy comprises the steps that a Zr-Y alloy is infiltrated on the surface of the TiAl alloy through a double glow plasma method, and a Zr-Y infiltrated layer is formed on the surface of the TiAl alloy; the TiAl alloy is subjected to heat preservation for 1-5 hours under the condition that the temperature ranges from 850 DEG C to 900 DEG C; a Zr-Cr-Y alloy is infiltrated on the surface of the TiAl alloy, and a Zr-Y / Zr-Cr-Y infiltrated layer is formed on the surface of the TiAl alloy; the TiAl alloy is subjected to heat preservation for 2-3 hours under the condition that the temperature ranges from 900 DEG C to 950 DEG C, and is oxidized under the condition that the temperature ranges from 860 DEG C to 920 DEG C;

A platinum-based composite material with low residual gas content and a preparation method thereof belong to the technical field of platinum-based composite materials, and the preparation method comprises the following steps: S1. Pt, Zr and Y pure metal raw materials are subjected to smelting under vacuum conditions, and then Pt-Zr-Y alloy ingots are obtained by pouring; S2. The Pt-Zr-Y alloy ingots prepared in S1 are made into alloy particles, and the alloy particles are made into alloy powder; S3. The alloy powder prepared in S2 is soaked in high-purity water, then hydrogen peroxide solution is added for activation, and the mixture is sealed and placed for a period of time, then anhydrous ethanol is added and stirred uniformly, and then dried to obtain pre-prepared alloy powder; S4. The pre-prepared alloy powder prepared in S3 is placed in a pure oxygen atmosphere for heating and heat preservation oxidation treatment to obtain oxidized pre-prepared alloy powder; S5. The oxidized pre-prepared alloy powder prepared in S4 is subjected to vacuum sintering treatment to obtain a platinum-based composite material blank; and S6. The platinum-based composite material blank prepared in S5 is subjected to vacuum hot pressing treatment to obtain a platinum-based composite material.

The invention relates to an Nb3Sn superconducting material, a method for improving the critical current density of Nb3Sn through rare earth yttrium doping and application of the Nb3Sn superconducting material. The method comprises the following steps that the surfaces of a component A and a component B are attached and placed in a fixing device to form a diffusion couple, and the diffusion couple is subjected to diffusion annealing to obtain the Nb3Sn superconducting material; the component A comprises an Nb elementary substance ingot and / or an Nb-Y alloy ingot; the component B comprises a Cu-Sn alloy ingot and / or a Cu-Sn-Y alloy ingot; at least one of the component A and the component B contains Y. By doping the Y element, the growth rate of the Nb3Sn layer is increased, and the critical current density of the interface Nb3Sn superconducting material is improved. The constructed diffusion couple can visually compare the growth difference of the Nb3Sn layers in doped and undoped samples, and facilitates the analysis of the influence mechanism of the doped elements on the synthesis of the Nb3Sn superconducting material and the critical current density.

The invention discloses a filling wire for double-wire electric arc additive manufacturing of TaNbTiZrY refractory high-entropy alloy and a process method, and belongs to the technical field of additive manufacturing. The TaNbTiZrY refractory high-entropy alloy is manufactured through electric arc additive manufacturing of the cable type filling wire and the solid filling wire. The cable type filling wire is formed by twisting seven filling wires with the diameter of 0.6 mm, wherein the seven filling wires comprise three Nb wires, three Ti-Y alloy wires and one pure Zr wire, and the Ti-Y alloy wires comprise 97.5-99.5 wt.% of Ti, 0.5-2.5 wt.% of Y and one pure Zr wire. A pure Zr wire is used as a central wire, other six filling wires with the same components are arranged at intervals in a crossed mode on the periphery, the twisting speed is 4 m / s, and the lay length is set to be 10 mm. And the solid filling wire is a pure Ta wire with the diameter of 1.2 mm. The TA1 is used as a substrate, and high-efficiency, high-quality and low-cost preparation of the TaNbTiZrY refractory high-entropy alloy can be achieved by controlling parameters such as the wire feeding speed, the welding current and the interlayer cooling time.

This invention discloses a wear-resistant and corrosion-resistant roller produced from electrostatically galvanized sheet metal and its preparation method. The roller includes a roller body, the surface of which is coated with a wear-resistant and corrosion-resistant layer. The wear-resistant and corrosion-resistant coating consists of, from the inside out, a conductive bonding layer, a corrosion-resistant transition layer, and a wear-resistant functional layer. The conductive bonding layer is a Ni-Cr-Al-Y alloy with a resistivity ≤1.2×10⁻⁶. ‑6 The corrosion-resistant transition layer is an Al-Fe-Cr-Mo amorphous alloy with a zinc melt corrosion rate ≤0.01mm / year; the wear-resistant functional layer is a WC-reinforced Ni-based composite coating with a microhardness ≥1200HV and an WC particle orientation angle ≤15° with the normal. This invention, through gradient functional design, amorphous alloy application, and multi-process synergistic control, achieves a roller lifespan of over 12 months, a 300% improvement over traditional technologies.

The invention discloses a method for reducing the oxygen content in a mother alloy of a Y-containing zirconium-based amorphous alloy and a preparation method of the Y-containing zirconium-based amorphous alloy, the Y-containing zirconium-based amorphous alloy has a chemical composition as shown in a formula (1): (Zr100-a-b-cCuaAlbNic) f.Yd (1), a is more than or equal to 30 and less than or equal to 35, b is more than or equal to 8 and less than or equal to 12, c is more than or equal to 3 and less than or equal to 7, and 100-a-b-c is more than or equal to 53 and less than or equal to 60; 0.98 < = f < = 0.998; d is equal to 100 to 100 * f; the method comprises the following steps: 1) preparing each metal according to the chemical composition; (2) Zr-Ni alloy is obtained; (3) Zr-Cu alloy is obtained; (4) Al-Y alloy is obtained; and (5) the Zr-Ni alloy, the Zr-Cu alloy and the Al-Y alloy obtained in the step (2), the step (3) and the step (4) are smelted with the remaining Cu and Al, and the Y-containing zirconium-based amorphous alloy master alloy is obtained. According to the method, the oxygen content in the obtained Y-containing zirconium-based amorphous alloy mother alloy can be reduced. The preparation method disclosed by the invention can basically avoid the generation of a crystal phase in the obtained amorphous alloy.

The invention discloses a high-damping and high-toughness layered magnesium alloy plate and a preparation method thereof, and belongs to the technical field of metal materials. The magnesium alloy plate is formed by alternately laminating and compounding a first magnesium alloy layer and a second magnesium alloy layer, and the first magnesium alloy layer is made of Mg-Al-Ca-Y series alloy and is used for providing high damping performance; and the second magnesium alloy layer is made of Mg-Al-Ca-Zn alloy and is used for providing high strength. The thickness ratio of the two layers is regulated to be within the range of (1: 3) to (3: 1), the total number of the layers is 4-10, and the soft layers, the hard layers, the soft layers and the hard layers are alternately stacked in the sequence of the soft layers, the hard layers, the soft layers and the hard layers. And the adjustable matching of the material strength and the damping performance is realized. The preparation method comprises the steps of smelting, solution treatment, plate lamination, large-shear asymmetric extrusion and annealing treatment. By means of the soft and hard alternate layered structure design, the technical problem that high strength and high damping performance of magnesium alloy are difficult to consider at the same time is effectively solved, and the magnesium alloy is suitable for light-weight structural components with common requirements for vibration reduction and bearing.

The invention discloses a screening method of an Mg-Ni-Y hydrogen storage alloy containing an Mg2Ni phase and a 14H-LPSO phase. The screening method comprises the following steps: 1, carrying out high-flux thermodynamic calculation on the theoretical hydrogen storage capacity of the Mg-Ni-Y alloy; 2, establishing a hydrogen storage performance data set of the Mg-Ni-Y alloy; 3, Mg-Ni-Y alloy screening conditions are set, and the hydrogen storage performance of the target alloy is set to meet the three screening conditions at the same time; and 4, determining a phase component region meeting screening conditions. The Mg-Ni-Y hydrogen storage alloy with high hydrogen storage capacity and rapid hydrogen absorption and desorption is obtained through screening, and the alloy element components comprise, by atomic percent, 8.5-10 at.% of Ni, 1.5-2.5 at.% of Y and the balance Mg; the phase composition of the alloy is an Mg phase, an Mg2Ni phase and a 14H-LPSO phase. When the material is used as a magnesium-based hydrogen storage material, the initial hydrogen desorption temperature is less than 210 DEG C; the maximum reversible hydrogen storage capacity is 5.5 to 6.5 wt.%; the hydrogen absorption rate is 0.27 to 0.29 wt.% / min; the hydrogen desorption rate ranges from 1.57 wt.% / min to 1.65 wt.% / min; and when the cycle index exceeds 500 times, the hydrogen storage capacity is not attenuated.

The invention relates to the technical field of medical instruments, in particular to a split type magnesium alloy strip line anchor, which comprises an anchor main body and an internal fixing cap, the axis directions of the anchor main body and the internal fixing cap are the same, a screw-in groove is arranged in the anchor main body, and a screw-in groove is arranged in the screw-in groove. The internal fixing cap is fixed inside the rivet main body through the screwing-in groove in a screwing-in and screwing-down mode, and the internal fixing cap is in a standard cylinder shape and is uniform and consistent in diameter. According to the split type design, the anchor main body (Mg-Zn-Ca alloy) and the composite coating provide corrosion resistance, the degradation rate is matched with cancellous bone healing, the gas production rate is controlled, and bone tunnel enlargement and unstable anchor fixation caused by gas cavity formation are avoided; the internal fixing cap (Mg-Zn-Y alloy) is subjected to plasma treatment to increase the surface roughness, the internal fixing cap and the main body are mechanically locked, and bottom holes are formed in the periphery of the interior of the fixing cap and used for being filled with materials for promoting early healing of cortical bones, so that the risk of pulling out in the early stage is avoided.

This invention discloses an in-situ nano-duplex reinforced Al-Zn-Mg-Cu-Y alloy. The chemical composition of the alloy, by mass percentage, comprises: Zn 4-8%, Mg 1.2-2.8%, Cu 1.2-2.0%, Y 0.1-0.6%, and Al 86.6-93.5%, with the total mass percentage of each chemical component being 100%. The alloy microstructure contains uniformly distributed nano-scale η-phase and nano-scale T-phase. This invention also discloses a high-pressure preparation method for the above-mentioned in-situ nano-duplex reinforced Al-Zn-Mg-Cu-Y alloy, comprising the following steps: subjecting the billet to high-temperature and high-pressure treatment to obtain the in-situ nano-duplex reinforced Al-Zn-Mg-Cu-Y alloy. This invention adds rare earth element Y and combines this with high-temperature and high-pressure treatment to form uniformly distributed nano-scale η-phase and nano-scale T-phase in-situ within the alloy microstructure.

The invention relates to the technical field of yttrium-containing high-temperature alloy preparation, and discloses a yttrium-containing high-temperature alloy and a preparation method thereof.The preparation method comprises the steps that (1) aluminum is added step by step, specifically, part of aluminum is added before refining, and the remaining aluminum is slowly added when the temperature is lowered to 1450-1470 DEG C after refining; (2) cooling and inflating: after aluminum alloying in the step (1) is completed, inflating high-purity argon, and powering off for cooling; (3) low-temperature alloying: after the molten metal in the step (2) is cooled to 1450-1470 DEG C, adding a yttrium metal block into the furnace, feeding an electric material and uniformly stirring; and (4) temperature-regulating pouring: after the yttrium metal block in the step (3) is completely melted, power is supplied for stirring, the temperature is regulated, and rapid casting is performed to obtain the yttrium-containing high-temperature alloy. By controlling Y alloying parameters and combining with a specific preparation method, low-temperature pouring is achieved, the Y element yield is improved and stabilized, pure metal raw materials with low unit price can be used, and the production cost is reduced.

The invention provides a high-temperature-resistant insulating paint and a preparation method thereof, and belongs to the technical field of paints.The high-temperature-resistant insulating paint is prepared from, by weight, 58-72 parts of high-temperature-resistant aggregate, 3-8 parts of aluminum silicate whisker fiber, 3-8 parts of nickel-chromium-aluminum Y alloy, 0.5-2 parts of molybdenum disulfide, 20-30 parts of silica sol and 0.5-2 parts of rheological additive; the high-temperature-resistant aggregate comprises 15-25 parts by weight of silicon carbide, 10-15 parts by weight of zirconium dioxide, 5-10 parts by weight of high-frequency porcelain, 10-15 parts by weight of aluminum oxide and 8-12 parts by weight of silicon dioxide. According to the technical scheme provided by the invention, the high-temperature-resistant insulating paint and the preparation method thereof are provided, so that the purposes of high-strength adhesion, excellent thermal shock resistance and convenience in construction are achieved at the same time.

The present invention provides a rare earth element Y-doped Ti-Nb-based titanium alloy, wherein the alloy comprises 20-30% Nb, 0-5% Y, and the remainder is Ti and unavoidable impurity elements in terms of atomic percentage content. The present invention also provides a preparation method and a processing method of the above-mentioned low modulus and high strength Ti-Nb-Y alloy, wherein a non-consumable vacuum arc melting process is combined with a heat treatment to produce a solid solution alloy, and the solid solution alloy is processed to obtain a treated alloy. By doping the rare earth element Y into the Ti-Nb titanium alloy, the alloy comprises Ti, Nb and Y elements. The rare earth element Y has a high affinity for O atoms in the melt. The Y element can capture interstitial oxygen in the alloy matrix to form Y2O3, thereby reducing the oxygen content in the alloy matrix. The addition of the Y element refines the titanium alloy grains. After the solid solution alloy is processed, more defects are introduced into the alloy, which reduces the elastic modulus of the titanium alloy and improves the yield strength of the titanium alloy.

The invention discloses a preparation method and application of a high-conductivity, high-strength and high-toughness fine-grain Cu-W-Y alloy, spherical Cu-Y alloy powder is prepared by adopting an atomization method, then the Cu-Y alloy powder and pure W powder are mechanically alloyed to obtain precursor powder, the mass percentage of Cu in the precursor powder is 94.25-95%, the mass percentage of W in the precursor powder is 5%, the mass percentage of Y in the precursor powder is 0-0.75%, the mechanical alloying time is 20-50 h, and the Cu-Y alloy powder is obtained. And finally, the precursor powder is subjected to spark plasma solid-phase sintering and hot extrusion or hot isostatic pressing sintering, subsequent aging heat treatment is conducted, and the high-conductivity, high-strength and high-toughness fine-grain Cu-W-Y alloy is obtained. High-thermal-conductivity metal tungsten is added, due to existence of rare earth metal yttrium, diffusion and long-distance migration and aggregation of W atoms are hindered, aggregation and growth of W particles are inhibited, local atom arrangement of the alloy is changed, and distortion of a crystal structure is increased. Yttrium can adjust the surface energy of tungsten particles and increase the repulsive force among the particles, so that small particles W are more stable, the adhesion among the particles is reduced, and the formation of large particles is inhibited. Yttrium affects the chemical potential of all elements in the alloy and changes the solubility and stability of W, so that tungsten particles are kept small in size in an alloy matrix, and the aggregation probability of the tungsten particles is reduced. Yttrium can also improve the stability and mechanical performance of the alloy in a high-temperature environment, and the alloy is applied to a nuclear reactor divertor.

The application belongs to the technical field of copper alloy materials, and relates to a high-strength conductive Cu-Sn-Ti-Cr-Y alloy and a preparation method thereof. The alloy raw material composition comprises, in percentage by weight, Sn: 2.3-2.6%, Ti: 0.8-1.2%, Cr: 0.21-0.25%, and Y: 0.037-0.042%. The preparation method of the alloy comprises the following steps: S1. configuring alloy raw materials; S2. preparing Cu-10% Sn intermediate alloy and Cu-10% Ti intermediate alloy; S3. obtaining alloy melt by vacuum smelting the alloy raw materials; S4. pouring the alloy melt into a mold, and obtaining alloy ingot after cooling; and S5. performing solid solution, cold rolling and aging treatment on the alloy ingot. The application improves the strength and conductivity of the alloy by designing element components, aging and precipitating second-phase particles, and simultaneously reducing the solute atom concentration in the matrix. The preparation process of the application is simple, the process flow is short, and the problem of poor conductivity of the Cu-Ti alloy is solved.