109 results about "Stable element" patented technology

Process for preparing a multi-layer electrochromic structure comprising depositing a film of a liquid mixture onto a substrate and treating the deposited film to form an anodic electrochromic layer comprising a lithium nickel oxide composition, the anodic electrochromic layer comprising lithium, nickel and the bleached state stabilizing element(s) wherein in the film (i) the ratio of lithium to the combined amount of nickel and the bleached state stabilizing element(s) is at least 0.4:1, (ii) the ratio of the combined amount of the bleached state stabilizing element(s) to the combined amount of nickel and the bleached state stabilizing elements in the lithium nickel oxide composition is at least about 0.025:1, and (iii) the bleached state stabilizing element(s) is/are selected from the group consisting of Y, Ti, Zr, Hf, V, Nb, Ta, Mo, W, B, Al, Ga, In, Si, Ge, Sn, P, Sb and combinations thereof.

Actuator apparatus having a multi-stable element actuated by memory alloy actuating elements. In one embodiment, the multi-stable actuator comprises a bistable (two-state) diaphragm element adapted to alternate between two stable configurations via forces exerted on the diaphragm by more than one memory alloy filaments in response to thermal activation. The bistable diaphragm element is coupled to a magnetic actuator element resident on a dry portion of a valve fitting, while a plunger actuated by the magnetic actuator element is resident on a wet portion of a valve fitting. Methods for making and using the bistable actuator apparatus are also disclosed.

Process for preparing a multi-layer electrochromic structure comprising depositing a film of a liquid mixture onto a substrate and treating the deposited film to form an anodic electrochromic layer comprising a lithium nickel oxide composition, the anodic electrochromic layer comprising lithium, nickel and the bleached state stabilizing element(s) wherein in the film (i) the ratio of lithium to the combined amount of nickel and the bleached state stabilizing element(s) is at least 0.4:1, (ii) the ratio of the combined amount of the bleached state stabilizing element(s) to the combined amount of nickel and the bleached state stabilizing elements in the lithium nickel oxide composition is at least about 0.025:1, and (iii) the bleached state stabilizing element(s) is/are selected from the group consisting of Y, Ti, Zr, Hf, V, Nb, Ta, Mo, W, B, Al, Ga, In, Si, Ge, Sn, P, Sb and combinations thereof.

Apparatus for cleaning the inner wall of wellbore tubulars, and for capturing downhole debris in the wellbore An elongated, tubular central mandrel has threaded connections on either end for makeup into a tubular string The mandrel has recesses on its outer circumference into which split rings are mounted Various service elements are then attachable to the central mandrel, by sliding them over the mandrel and holding them in place with stabilizer elements which connect to the split rings Different embodiments of the service elements include a brush assembly, a junk basket, and a magnet The stabilizer elements may be mounted onto the split rings so as to either be rotationally locked with respect to the mandrel, or so as to be capable of rotating with respect to the mandrel, since the service elements are held in place on the central mandrel by the stabilizer elements.

A system and method for storing potential energy in a microcomponent is disclosed comprising a multi-stable element having two or more equilibrium states and a stopper to restrict the multi-stable element from entering at least one of the two or more equilibrium states. The pre-charged microcomponent may then preferably be transported to another location and use the stored potential energy to perform some action.

The invention belongs to the field of TiAl intermetallic compounds, and relates to forging TiAl alloy which is mainly applied to manufacturing of aero-engine blades, can be used for a long time at thetemperature being 700-800 DEG C, and is high in plasticity, high in strength, high-temperature-resistant and fatigue-resistant and a preparation method of the forging TiAl alloy. The TiAl alloy is added with beta stable elements such as Cr, Nb, Ta, W and Mo, and is further added with a small amount of interstitial elements such as B and Si. The forging TiAl alloy is characterized in that the TiAlalloy comprises the following components in percentages by atoms: 42-47% of Al, 3-6% of Nb, 1-2% of Cr, 0.1-0.5% of Ta, 0-0.2% of W, 0-0.2% of Mo, 0-0.2% of B, 0-0.2% of Si and the balance of Ti andinevitable impurities, wherein O content is less than or equal to 0.1 wt%, N content is less than or equal to 0.015 wt%, H content is less than or equal to 0.01 wt%, and Fe content is less than or equal to 0.08 wt%. After the various beta stable elements are combined and matched, the total adding amount is calculated according to a [Nb] equivalent formula and requires to be controlled between 6 and 11. The TiAl alloy can work at the temperature being 700-800 DEG C for a long time, can be used for manufacturing parts such as aero-engine compressor blades and low-pressure turbine blades, can also be used for manufacturing high-temperature-resistant structures such as supersonic aircrafts, and can be used for a short time at the temperature being 900-1000 DEG C.

An asynchronous wait state generator circuit and method is included in a dual port device, e.g., in a dual port memory, to allow the use of separate address decoders and simultaneous access to memory locations from asynchronously operating, separate ports. When an address collision is detected between accesses on both ports of a dual port device, a wait state signal is generated for the relevant port having the later attempt to access the same memory or other addressable location. In the unique event wherein both accesses are initiated at precisely the same time, a meta-stable element is used to resolve the condition and to allow access to a prioritized port. The wait state signals output for the relevant port of the dual port device are preferably synchronized with the clock signal of the relevant port.

A solenoid-type fuel injector assembly having at least one component formed of stabilized, solenoid-quality ferritic stainless steel. In a preferred embodiment, an austenitic fuel tube is laser-welded to an injector body and to a solenoid pole piece formed of the subject material. The stabilized, solenoid-quality ferritic stainless steel, preferably a free-machining grade thereof, comprises from about 10% to about 35% chromium, and at least one stabilizing element selected from the group consisting of titanium and columbium. Components thus formed are weldable, exhibit soft magnetic properties sufficiently strong for carrying a magnetic flux in a solenoid pole piece, have desired structural and mechanical properties, and reduce the susceptibility of a solenoid-type fuel injector to metallurgical sensitization and intergranular corrosive attack at weld sites.

Disclosed is a memory cell having an access transistor and an electric field programmable bi-stable element. The access transistor may be a (N-channel or P-channel) MOSFET transistor having a gate, source or drain region coupled to the electric field programmable bi-stable or multi-stable element (hereinafter collectively, “bi-stable element” unless expressly indicated otherwise). The access transistor facilitates selective and controllable programming and reading of the electric field programmable bi-stable element. Also disclosed is a plurality of memory cells, each having a unique, different and/or distinct electric field programmable bi-stable element and a common access transistor and a common access transistor. In yet another aspect, a differential memory cell having a plurality of memory cells configured to store complementary data states is disclosed. The differential memory cell includes first memory cell and second memory cell wherein the first memory cell maintains a complementary state relative to second memory cell. The first and second memory cells include a common access transistor and unique, different and/or distinct electric field programmable bi-stable element, or each includes an access transistor and an electric field programmable bi-stable element. Finally, a complementary memory cell having an N-channel type memory cell (an N-channel access transistor and an electric field programmable bi-stable element) and a P-channel type memory cell (a P-channel access transistor and an electric field programmable bi-stable element) is disclosed.

Actuator apparatus having a multi-stable element actuated by memory alloy actuating elements. In one embodiment, the multi-stable actuator comprises a bistable (two-state) diaphragm element adapted to alternate between two stable configurations via forces exerted on the diaphragm by more than one memory alloy filaments in response to thermal activation. In another embodiment, the bistable diaphragm of the multi-stable actuator transitions from a first to a second stable configuration via forces exerted by a single filament in response to direct or indirect thermal activation. A portion of the assembly is displaced when the assembly is in the second configuration. The bistable diaphragm transitions back to the first stable configuration via application of mechanical force on a portion of the assembly which was displaced. Methods for making and using the bistable actuator apparatus are also disclosed.

The invention relates to a titanium alloy which is alpha + beta two phase one. Its components are as follows: 4.5-9.0wt% aluminum, 0.2-1.5wt% boron, and 0.5-5wt% beta stable element. The titanium alloy of the invention not only has high intensity high elastic modulus, but also cannot worsen its process ability and plasticity index.

The invention relates to a medicinal oxygen-containing beta titanium alloy for orthopedic implantation and a preparation method thereof, which belong to the technical field of medicinal apparatus and instruments. The preparation method comprises the following steps of: performing vacuum self-consuming smelting treatment on alloy ingredients to obtain a titanium-niobium-zirconium-tantalum (Ti-Nb-Zr-Ta) alloy; performing non-consumable smelting treatment on the Ti-Nb-Zr-Ta alloy; and then performing heat treatment and heat processing sequentially to prepare the medicinal beta titanium alloy and obtain the medicinal oxygen-containing beta titanium alloy, wherein the oxygen element accounts for 0.13 to 0.53 weight percent of the medicinal oxygen-containing beta titanium alloy, and the titanium-niobium-zirconium-tantalum alloy comprises the following components in percentage by mass: 60 percent of Ti, 35 percent of Nb, 3 percent of Zr and 2 percent of Ta. In the preparation method, elements with biological safety are selected and a high-content beta stable element is added, so the alloy has high cold machining property; and the alloy is strengthened by increasing the oxygen element content in the alloy and the oxygen element ratio is optimized by adding the oxygen elements with different content, so the alloy has high strength and low elastic modulus.

The invention provides a preparation method of agglomerated composite thermal spraying powder of boride-containing ceramic, which belongs to the field of powder processing and thermally sprayed composite ceramic coatings. According to requirements on elements of the thermal spraying powder, raw materials are subjected to mixing, ball mixing and sieving; a dispersant and water are added for the ball milling again, an adhesive is added after the materials are uniform, and then material slurry is taken out; the material slurry is subjected to spray drying and granulating by a spray drying device, and then the powder subjected to the spray drying is thermally treated. By adopting the preparation method provided by the invention, uniform and stable element distribution in the material slurry is realized, the viscosity of the material slurry is appropriate, the obtained sphere is good, the density is high, the fluidity is good, the apparent density is high and the granularity distribution is uniform, and the method is applicable to thermally sprayed boride-containing composite ceramic powder.

The invention relates to medium-chromium ferrite stainless steel for automobiles with high formability and acidic corrosion resistance, comprising the following components in percentage by weight: not more than 0.015 percent of C, not less than 0.20 percent and not more than 0.05 percent of Si, not less than 0.20 percent and not more than 0.07 percent of Mn, 16.0 to 18.0 percent of Cr, not more than 0.03 percent of P, not more than 0.002 percent of S, not more than 0.3 percent of Ni, not more than 0.015 percent of N, not more than 0.025 percent of C+N, not more than 0.06 percent of Al, not more than 0.2 percent of Cu, 0.1 to 0.3 percent of Zr, and the balance of Fe and inevitable impurities; one or more of Nb and Ti are also added as stabilizing elements with the following addition amount: Nb single stabilization: 0.5Nb is not less than 0.10 percent and not more than 0.20 percent by weight; Ti single stabilization: Ti is not less than 8X(C+N) and not more than 0.30 percent by weight, wherein the 8X(C+N) is not less than 0.20 percent by weight; Nb, Ti dual stabilization: 0.5Nb+Ti is not less than 10X(C+N) and not more than 15(C+N); Nb/Ti is equal to 1.0 to 1.8; and Nb + Ti is not more than 0.40 percent by weight. The medium-chromium ferrite stainless steel adopts different stabilizing modes of Ti single stabilization, Nb single stabilization and Ti + Nb dual stabilization and adds the stabilizing elements with different contents according to different stabilizing modes.

A method for the production of a γ-TiAl base alloy by vacuum arc remelting, which γ-TiAl base alloy solidifies via the (β-phase (β-γ-TiAl base alloy), comprises the following method steps:

• • forming a basic melting electrode by melting, in at least one vacuum arc remelting step, of a conventional γ-TiAl primary alloy containing a lack of titanium and/or of at least one (β-stabilising element compared to the (β-γ-TiAl base alloy to be produced;
  • allocating an amount of titanium and/or (β-stabilising element to the basic melting electrode, which amount corresponds to the reduced amount of titanium and/or (β-stabilising element, in an even distribution across the length and periphery of the basic melting electrode;
  • adding the allocated amount of titanium and/or (β-stabilising element to the basic melting electrode so as to form the homogeneous (β-γ-TiAl base alloy in a final vacuum arc remelting step.

The invention provides low-cost high-strength alpha+beta titanium alloy. The titanium alloy takes titanium as a main body element, and takes alpha stable elements, namely, Al and B, and beta stable element, namely, Fe, as alloy elements; and the titanium alloy is prepared from the following components in percentage by weight: 2.5 to 4.5 percent of Al, 2.5 to 4 percent of Fe, 0.05 to 0.2 percent ofB, and the balance of titanium and unavoidable impurities. The invention also provides a preparation method of the low-cost high-strength alpha+beta titanium alloy; the preparation method comprises the following steps: adding raw materials into a water-cooled crucible suspension melting furnace into which argon gas is introduced according to a designed proportion alloy component proportion; obtaining an ingot casting after repeated melting; cogging and forging above a phase transition point; sampling a forged alloy and performing heat treatment; and finally, characterizing tissue structures and performance. The prepared titanium alloy is uniform in alloy components and fine in tissues; the tensile strength is greater than or equal to 1,000 MPa, and the plastic elongation percentage is greater than or equal to 15 percent; and the alloy has the advantages of low cost and high strength, and can replace part expensive titanium alloys in certain fields.

The invention relates to a high-intensity, high-toughness and corrosion-resistant titanium alloy and a preparation method thereof, and belongs to the field of alloys. The titanium alloy is prepared from the following element components (in percentage by mass): 3.0 to 7.0 percent of Al; 2.0 to 6.0 percent of a beta-stable element (Mo+Nb+V), 0.01 to 6.0 percent of Ta, 0.5 to 3.5 percent of Zr and the balance of Ti and unavoidable impurities. The performance of the alloy is as follows: Rp0.2 is greater than or equal to 840 MPa, Rm is greater than or equal to 940 MPa, A is greater than or equal to8 percent, KIC is greater than or equal to 110 MPa.m<1/2>, KISCC is greater than or equal to 100 MPa.m<1/2>, and KV2 is greater than or equal to 60J. The alloy has good technology application and market prospects in the field of ship, marine engineering and the like.

The invention relates to a metal refiner for a magnesium alloy and is characterized in that the refiner adopts magnesium as the basal body and contains strontium, neodymium and lanthanum elements. The mass percentage for the alloy elements is as follows: Sr more than or equal to 5 percent and less than or equal to 30 percent, Nd more than or equal to 0.3 percent and less than or equal to 0.6 percent, La more than or equal to 0.3 percent and less than or equal to 0.6 percent and the rest is magnesium. The submicron phases of the magnesium strontium compound with a length of 0.1 to 0.8 micrometer are distributed on the basal body of the alloy. The refiner preparing method of the invention has simple technique, stable elements, no environmental pollution and low manufacturing cost. The refiner obtained from the method has an excellent service effect, which has a refining effect is 3 to 5 times of that of a common refiner under the same adding condition.

The invention relates to a monitoring method of vertical displacement of selected points of building construction elements, especially roof construction elements or their parts, and vertical deflection change in these points, wherein a distance, preferably vertical, between each of monitored points of construction elements and the stable elements or stable floor is measured, and then a value of vertical displacement of each monitored point, which occurred from the moment of monitoring initiation, is calculated, and then for each monitored construction element the value of vertical deflection change in the monitored point is calculated. The invention relates also to a system for monitoring of vertical displacement of monitored points as well as vertical deflection change in these points of building construction elements.

The invention discloses a method for enhancing work hardening capacity of a beta-type amorphous alloy endogenous composite material and belongs to the technical field of an amorphous alloy composite material. According to the method, content of beta-phase stable element in the chemical components of the beta-type amorphous alloy endogenous composite material is adjusted such that the beta-phase has proper structural metastability. Then, an obtained sample can undergo deformation-induced martensitic transformation and/or twinning so as to enhance work hardening capacity of the beta-type amorphous alloy endogenous composite material. The key of the method is to regulate and control structural metastability of the in-situ precipitated beta-phase. The method has important value for designing and developing the beta-type amorphous alloy endogenous composite material with excellent mechanical properties.

The invention discloses a forging forming method of a high-toughness titanium ring. The forging forming method of the high-toughness titanium ring is carried out according to the following steps that1, a titanium alloy is blanked into a bar; 2, a titanium alloy pre-rolling ring blank is obtained; 3, the ring blank is subjected to rolling forming; 4, double annealing is conducted; 5, coarse grainsof the ring blank are broken; 6, the coarse broken grains are refined and uniformized; 7, the grains at a beta area of a forging structure are refined; 8, constant-temperature correction is conducted; and 9, low-temperature heat treatment is conducted, and air cooling is conducted to the indoor temperature. The forging forming method is simple, clear and convenient to apply; the content of the alpha stable is increased appropriately, and the content of the beta stable element is decreased appropriately, so that the number of alpha strips in the titanium alloy is increased; and therefore, after subsequent forging, a mesh basket structure with the high confusion degree can be obtained for improving the high-temperature strength of a forging, and meanwhile, the high-temperature tensile strength of the forging is improved.

The invention addressed two critical issues in fuel processing for fuel cell application, i.e. catalyst cost and operating stability. The existing state-of-the-art fuel reforming catalyst uses Rh and platinum supported over refractory oxide which add significant cost to the fuel cell system. Supported metals agglomerate under elevated temperature during reforming and decrease the catalyst activity. The catalyst is a perovskite oxide or a Ruddlesden-Popper type oxide containing rare-earth elements, catalytically active firs row transition metal elements, and stabilizing elements, such that the catalyst is a single phase in high temperature oxidizing conditions and maintains a primarily perovskite or Ruddlesden-Popper structure under high temperature reducing conditions. The catalyst can also contain alkaline earth dopants, which enhance the catalytic activity of the catalyst, but do not compromise the stability of the perovskite structure.