1656 results about "Ti element" patented technology

An inorganic material that consists of at least two elementary spherical particles, each of said spherical particles comprising metal nanoparticles that are between 1 and 300 nm in size and a mesostructured matrix with an oxide base of at least one element X that is selected from the group that consists of aluminum, titanium, tungsten, zirconium, gallium, germanium, tin, antimony, lead, vanadium, iron, manganese, hafnium, niobium, tantalum, yttrium, cerium, gadolinium, europium and neodymium is described, whereby said matrix has a pore size of between 1.5 and 30 nm and has amorphous walls with a thickness of between 1 and 30 nm, said elementary spherical particles having a maximum diameter of 10 μm. Said material can also contain zeolitic nanocrystals that are trapped within said mesostructured matrix.

Disclosed in this invention is a family of ternary and multi-nary iron-based new compositions of bulk metallic glasses which possess promising soft magnetic properties, and the composition selection rules that lead to the design of such new compositions. The embodiment alloys are represented by the formula M_aX_bZ_c, where M represents at least one of ferromagnetic elements such as iron and may partly be replaced by some other substitute elements; X is an element or combinations of elements selected from those with atomic radius at least 130% that of iron and in the mean time is able to form an M-rich eutectic; and Z is an element or combinations of elements selected from semi-metallic or non-metallic elements with atomic radius smaller than 86% that of iron and in the meantime is able to form an M-Z eutectic; a, b, c are the atomic percentage of M, X, Z, respectively, and a+b+c=100%. When 1%<b<15% and 10%<c<39%, the alloys show a bulk glass forming ability to cast amorphous ribbons/sheets at least 0.1 mm in thickness. When 3%<b<10% and 18%<c<30%, the alloys show a bulk glass forming ability to cast amorphous rods at least 1 mm in diameter. The amorphous phase of these as-cast sheets/rods is at least 95% by volume. This invention also discloses the existence of nano-crystalline phase outside of the outer regime of the bulk glass forming region mentioned above.

The invention relates to the field of single crystal superalloys, particularly to a high-strength hot-corrosion-resistant Ni-based single crystal superalloy and a preparation method, and is mainly applied to high-temperature components applied to various marine environments and turbine high-temperature components of ground industrial gas turbines. The superalloy comprises chemical components in percentage by weight as follows: 11-15% of Cr, 5-9% of Co, 0.5-2.0% of Mo, 3.0-5.0% of W, 4.5-7.0% of Ta, 3.5-5.6% of Al, 2.3-3.7% of Ti and the balance of Ni. A vacuum induction furnace is used for smelting, a mother alloy is cast firstly, and then the high-strength hot-corrosion-resistant single crystal superalloy is prepared according to a single crystal growth technology and a heat treatment system. The Cr and refractory metallic elements with higher content are selected, but the content of the Ti element is reduced. Meanwhile, the crystal boundary is eliminated through a single crystal technology, so that the hot corrosion resistance, the high-temperature mechanical property and the structure stability of the alloy are further improved.

The invention relates to a production process of a high-cleanliness non-quenched and tempered plastic mold thick steel plate. The high-cleanliness non-quenched and tempered plastic mold thick steel plate is chemically composed of, by weight percentage, 0.25-0.45% of carbon, 0.20-0.50% of silicon, 0.70-1.50% of manganese, 0.70-2.00% of chromium, 0.15-0.55% of molybdenum, less than 0.01% of phosphorus, less than 0.005% of sulfur, 0.0010-0.030% of calcium, balanced iron and inevitable impurities. The chemical composition is simple in design; by means of the C-Mn-Cr-Mo alloying technology, the content of Mn and Cr can be improved;, by adding a certain amount of Mo, conversion of austenite to ferrite and pearlite can be inhibited, so that the high-cleanliness non-quenched and tempered plastic mold thick steel plate can have high hardenability and obtain a bainite structure; without the elements of Ti and V which are prone to generating inclusions, relatively clean steel can be obtained. The high-cleanliness non-quenched and tempered plastic mold thick steel plate has the advantages of being internally clean and compact, low in content of inclusions and capable of fundamentally eliminating pores, can meet the requirements of advanced plastic molds on internal high quality of steel and can be applied to the plastic mold industries such as automobile and electric appliances.

Provided is a piezoelectric material excellent in piezoelectricity. The piezoelectric material includes a perovskite-type complex oxide represented by the following General Formula (1).

A (Zn_xTi_1-x))_yM_(1-y)O₃  (1)

wherein A represents at least one kind of element containing at least a Bi element and selected from a trivalent metal element; M represents at least one kind of element of Fe, Al, Sc, Mn, Y, Ga, and Yb; x represents a numerical value satisfying 0.4≦x≦0.6; and y represents a numerical value satisfying 0.1≦y≦0.9.

The invention discloses low-noise feature oriented silicon steel which comprises a silicon steel base plate and an insulating coating, wherein the silicon steel base plate is coated with the insulating costing. In addition, the tension range of the insulating coating ranges from 6 MPa to 8 MPa. The content of Cu in the silicon steel base plate satisfies the inequation that 0.1%<=Cu<=0.5%, the content of S in the silicon steel base plate satisfies the inequation that 0.01%<=S<=0.05%, and the atomic ratio of Cu/S satisfies the inequation that 5<=Cu/S<=10. The invention further discloses a manufacturing method for the low-noise feature oriented silicon steel. The method sequentially includes the steps of firstly, smelting and casting to form a plate blank, secondly, heating, thirdly, normalization, fourthly, cold rolling, fifthly, decarbonization annealing, sixthly, finished product annealing, and seventhly, thermal drawing annealing, wherein the surface of the silicon steel base plate is coated with the insulating costing, and the coating quantity is adjusted so that the tension range of the insulating coating can range from 6 MPa to 8 MPa. The low-noise feature oriented silicon steel is small in magnetostriction, vibration generated by an iron core made of the silicon steel is small, and therefore the overall noise level of a transformer is reduced.

The invention relates to metal smelting technology and particularly relates to a Al-Si-Cu-Mg cast aluminum alloy and a preparation method thereof. The cast aluminum alloy comprises 89.5-90.5wt% of aluminum (Al) and the balance of 6.5-7.5wt% of silicon (Si) and 0.02-0.04wt% of modificator strontium (Sr), wherein according to the alloy, the content of copper (Cu) is 1.5-2.5wt%, the content of magnesium (Mg) is 0.35-0.65wt% and 0.05-0.25wt% of zirconium (Zr) and 0.1-0. 5wt% of cadmium (Cd) are both added into the alloy. The preparation method comprises the steps of smelting, refining, carrying out modification treatment, adding 0.04wt% of Sr, standing for 40-60 minutes, carrying out low pressure casting by using an electromagnetic pump and carrying out T6 heat treatment on castings to obtain the corresponding castings. Since more accurate element content control values and reliable operation process parameters are provided by the scheme, the high-performance cast aluminum alloy, especially suitable for the automotive industry can be prepared based on the optimized configuration of trace elements in AlSi7Cu2Mg.

The invention belongs to the field of steel plate smelting, and specifically relates to a steel plate for third-generation nuclear power station reactor containments and a manufacturing method for the steel plate. The steel plate for the third-generation nuclear power station reactor containments contains the following components by weight: 0.08-0.12% of carbon (C), 0.15-0.55% of silicon (Si), 0.9-1.5% of manganese (Mn), less than or equal to 0.007% of phosphorus (P), less than or equal to 0.004% of sulphur (S), 0.1-0.5% of nickel (Ni), 0.0-0.3% of chromium (Cr), 0.10-0.35% of molybdenum (Mo), 0.010-0.050% of vanadium (V), 0.010-0.030% of niobium (Nb), 0.008-0.035% of titanium (Ti), 0.020-0.050% of aluminum (Al), less than or equal to 0.006% of nitrogen (N), and less than or equal to 0.08% of Nb+V; and the balance of iron and unavoidable impurities. The steel plate has benefits that the steel plate, containing combinations of components by weight percentage mentioned above and being manufactured by the method provided by the invention, is characterized by low carbon content, high-temperature resistant performance against 200 degrees centigrade, low cost and excellent welding performance; and tensile strength of the steel plate is higher than 600MPa.

The invention discloses a hard alloy blade and a preparation method thereof. The hard alloy blade comprises a hard alloy blade basal body and a coating layer; the hard alloy blade basal body uses Co as a binding phase, and uses tungsten carbide and a titanium-contained cubic-phase compound as a hard phase; the solid solution is performed for a W element and a Cr element in the binding phase; the mass fraction of the W element in the binding phase is 2-10 wt.%; the mass fraction of the Cr element in the binding phase is 1-10 wt.%; the titanium-contained cubic-phase compound is a carbon-nitrogen compound containing one or two in a Ta element and a Nb element and a Ti element; and the grain distribution of tungsten carbide has a double-peak structure. The preparation method comprises batching, powder preparation by mixing, molding by pressing, sintering and preparation of a coating layer. The hard alloy blade has the advantages of high hardness, toughness and strength and excellent and stable cutting performance, and is high in generality, suitable for various processing fields, simple in preparation method and low in cost.

Mn alloy materials for magnetic materials contain 500 ppm or less, preferably 100 ppm or less, oxygen, 100 ppm or less, probably 20 ppm or less, sulfur, and preferably a total of 1000 ppm or less, more preferably 500 ppm or less, impurities (elements other than Mn and the alloying component). The alloying component that forms an alloy with Mn is one or two or more elements selected from the group consisting of Fe, Ir, Pt, pd, Rh, Ru, Ni, Cr and Co. Sputtering targets formed from the Mn alloy materials for use in depositing magnetic thin film, and the thin films so produced.

The invention discloses a composite oxidant SCR (Selective Catalytic Reduction) denitrating catalyst for warm fume in boilers, a preparation method and application thereof. The catalyst comprises the components of transition metal element M and Ti element. As counted by the oxidant, the amount of the transition metal element M accounts for 6.8-20wt% of the total weight of the catalyst. As counted by TiO2, the amount of Ti accounts for 80-93.2wt% of the total weight of the catalyst. Compared with the widely used commercial catalyst, the catalyst decreases the cost by more than 20%, does not contain W, Mo, V and Ce, and has the advantages of low cost, no toxicity, high activity, good sulphate resisting property and the like.

The invention offers a high tensile strength low carbon bainite coarse plate and its manufacturing method. Its compositions (Wt%) are C 0.052%-0.08%, Si 0.1%-0.5%, Mn1.65%-1.90%, Nb 0.015%-0.060%, Ti 0.005%-0.03%, B 0.0005%-0.003%, Mo 0.25%-0.50%, Cu 0.62%-0.85%, Ni 0.42%-0.80%, Al 0.015%-0.05%, and rest Fe and other inevitable impurity. The invention adopts low cost Mn element as the main additional element, fully applies the changing action of Cu, Mo, Ni, Nb, B to the bainite. The steel has low carbon, good low temperature toughness, welding performance, and forming performance. Its Nb and Ti element is low. And it is fit for large-scale industrialization continuous casting production. The TMCP+ RPC+T technique is adopted to make tensile strength over 900N/mm2 high intensity and tenacity steel. Adopting lower steel blank heating temperature can economize energy and improve steel low temperature toughness. The product can apply in engineering machinery, digging machinery, heavy-duty car, and marine facilities field, and etc.

The invention discloses 35MnB steel which comprises the following components in percentage by weight: 0.33-0.36 percent of C, 0.20-0.30 percent of Si, 1.20-1.40 percent of Mn, not more than 0.30 percent of Cr, not more than 0.025 percent of S, not more than 0.025 percent of P, not more than 0.20 percent of Ni, not more than 0.20 percent of Cu, 0.015-0.035 percent of Ti, 0.005-0.0030 percent of B, 0.015-0.035 percent of Al, not more than 20*10<-6> percent of [O] and not more than 35*10<-6> percent of [N], wherein the components are smelted in a rotary furnace, subsequently smelted in an LF ladle furnace, then subjected to RH vacuum degassing and finally cast continuously to obtain an ingot blank. The energy consumption cost for producing the type of steel is lowered fundamentally; loss of an element B of the 35MnB steel is reduced; the yield of ferroboron during a steel smelting process is increased; the stability of hardenability of the 35MnB steel can be improved; in addition, by adopting low superheat degree, electromagnetic stirring and a constant-temperature and constant-speed casting process, segregation of the elements such as C and Mn is alleviated, the components are more uniform and the fluctuation of the hardenability is alleviated.

The invention discloses an electroslag remelting process for titanium alloy steel, which comprises the following steps of: (1) preparing consumable electrodes; (2) preparing electroslag; (3) forming slag through electroslag; (4) remelting electroslag. The step (3) of slag formation comprises the following procedures of: firstly, adding one third of total slag material into a crystallizer to form slag, mixing a right amount of mixture including Al powder and FeTi powder into the rest residue material, and adding the rest residue material with the mixture into the crystallizer to form slag. Theelectroslag remelting process for titanium alloy steel does not need special slag purification process, the investment to slag purification equipment is reduced, the technological flow is shortened, and the production cost is greatly lowered. By adding the mixture of Al powder, FeTi powder and CaF2 powder into a slag pool in the process, oxygen generated by unstable oxides in the molten slag can be prevented from entering the slap pool and a molten pool to oxidize elements in steel, and the massive uncertain oxidation burning of Ti element in steel is avoided. Therefore, the content of Ti element in the titanium alloy steel obtained by the process can accurately reach the standard requirement, and the quality of the titanium alloy steel is ensured.

The invention provides a high-strength and high-elasticity-modulus casting Mg alloy and a preparation method thereof. The Mg alloy comprises 6-12wt% of Gd, 1-5wt% of Li, 1-5wt% of Y, 2-6wt% of Al, the balance of Mg and inevitable impurities, wherein the total content of Si, Fe, Cu and Ni in the impurities is smaller than 0.03wt%. The preparation method of the Mg alloy includes the sequential steps of vacuum melting and heat treatment. Compared with the prior art, the preparation method has the advantages that by adopting a vacuum induction melting furnace for melting, inclusions generated in the melting process are reduced, and the retention time of a melt at a high temperature is substantially shortened; the effects of solution strengthening and age hardening of the Mg alloy can be fully exerted under the optimized heat treatment process.

The invention provides an iron-based amorphous and nano-crystalline soft magnetic alloy which has a general formula as shown in formula I, FexSiyBzPnCumCw, wherein x is greater than or equal to 84.0 and smaller than or equal to 85.0, y is greater than or equal to 0 and smaller than or equal to 2, z is greater than or equal to 8.5 and smaller than or equal to 10.5, n is greater than or equal to 3 and smaller than or equal to 4, m is greater than or equal to 0.3 and smaller than or equal to 1, w is greater than or equal to 0 and smaller than or equal to 1, and x+y+z+n+m+w is equal to 100. By adding special elements and supplementing with a corresponding proportion, the invention discloses the novel iron-based amorphous and nano-crystalline soft magnetic alloy with has high statured magnetic induction intensity. The alloy has excellent soft magnetic performances such as high magnetic induction intensity and low coercive force, does not contain a dear metal element B and greatly reduces cost of the material.

The invention relates to non-copper and nickel acid resistant pipeline steel X52MS. The non-copper and nickel acid resistant pipeline steel X52MS comprises the following components in percentage by weight: 0.02-0.06 wt% of C, 0.05-0.35 wt% of Si, 1.0-1.4 wt% of Mn, P not greater than 0.018 wt%, S not greater than 0.003 wt%, 0.10-0.50 wt% of Cr, 0.05-0.10 wt% of Ti, 0.005-0.10 wt% of Nb, 0-0.05 wt% of V, and the balance of Fe and inevitable trace impurities. The invention further provides a preparation method of a hot-rolled plate coil of the non-copper and nickel acid resistant pipeline steel X52MS. Part of all Cr is used for replacing original Ni/Cu elements, so that the material cost is largely reduced under the precondition of guaranteeing the material HIC resistance.