41results about How to "Suppress spawn rate" patented technology

The invention discloses a zinc-aluminum-magnesium alloy wire containing rare earth, and a preparation method and application thereof. The zinc-aluminum-magnesium alloy wire is prepared from the following components: 15 to 40 percent of aluminum, 0.2 to 4.0 percent of magnesium, 0.02 to 0.2 percent of rare earth elements, i.e. cerium and erbium, not larger than 0.025 percent of impurities, and the balance of zinc, wherein the mass ratio of the two rare earth elements i.e. Ce to Er is 3:7 or 7:3. According to the zinc-aluminum-magnesium alloy wire containing the rare earth provided by the invention, the rare earth elements such as the cerium and the erbium are added, so that the corrosion resistance is improved, meanwhile, the zinc-aluminum-magnesium alloy wire has the advantages of high strength, high hardness, low price and the like, and can replace a traditional zinc wire so as to be used for the fields such as spraying anticorrosion engineering, and a zinc-aluminum-magnesium alloy heat coating has an excellent adhesive force, favorable physical and mechanical properties and a corrosion resisting property. The average annual corrosion rate of the zinc-aluminum-magnesium alloy heat coating is larger than the average annual corrosion rates of a heat spraying zinc coating, a zinc aluminum alloy coating, a zinc aluminum pseudo alloy coating and the like, and an anodic protection effect of the zinc-aluminum-magnesium alloy heat coating is remarkably improved compared with the anodic protection effects of aluminum and other aluminum alloy heat spraying metal layers; the whole wire material processing and manufacturing process is simple and convenient, and the cost is lower.

The invention relates to a multi-element zinc-aluminum alloy wire. The multi-element zinc-aluminum alloy wire comprises, by weight percent, 15%-69% of Al, 0.2-3% of Si, 0.1-5% of Mg, 0.01-0.8% of Ce, 0.01-0.2% of Pr, 0.01-0.2% of Nd, not more than 1% of added microelements, and the balance of Zn, wherein the three rare earth elements have a total amount of 0.03-0.92%. The zinc-aluminum alloy wirehas a resistivity of 2.0-6.0 Mu omega/cm, a specific gravity of 3.18-5.69g/cm<3>, and an elongation of 10-25%. The multi-element zinc-aluminum alloy wire is widely applicable to ships, power towers, large storage tanks, underground pipelines and facilities such as tunnel frames, and has broad application prospect.

The invention relates to a multi-element zinc-aluminum alloy wire. The multi-element zinc-aluminum alloy wire comprises, by weight percent, 15%-69% of Al, 0.2-3% of Si, 0.1-5% of Mg, 0.01-0.7% of Ce, 0.01-0.2% of Nd, not more than 1% of added microelements, and the balance of Zn, wherein the two rare earth elements have a total amount of 0.02-0.76%. The zinc-aluminum alloy wire has a resistivity of 2.0-6.0 Mu omega/cm, a specific gravity of 3.18-5.69g/cm<3>, and an elongation of 10-25%. The multi-element zinc-aluminum alloy wire is widely applicable to ships, power towers, large storage tanks, underground pipelines and facilities such as tunnel frames, and has broad application prospect.

The invention relates to an a multielement aluminum titanium alloy wire, which comprises the following components in weight percentage: 94-97% of Al; 0.05-1% of V; 2-5% of Ti; 0.01-0.7% of La, and 0.01-0.2% of Pr, wherein the total amount of the two rare-earth elements is 0.02-0.76%, the total amount of trace additional elements is not greater than 1%, the resistivity of the aluminum titanium alloy wire is 2.0-6.0 muomega*cm, the specific weight of the aluminum titanium alloy wire is 2.60-2.75g/cm<3>, and the percentage elongation of the aluminum titanium alloy wire is 10-25%.

The invention discloses an isobutane dehydrogenation catalyst and a preparation method and application thereof. According to the catalyst, alpha-Al2O3 spheres which are subjected to zinc oxide surfacemodification and heat treatment to form a thin-layer zinc aluminate spinel structure are used as a carrier; a first active layer and a second active layer which are different from each other are sequentially arranged on the surface of the carrier from inside to outside, the first active layer is a platinum oxide layer or a tin oxide layer, and the second active layer is a platinum oxide layer ora tin oxide layer. The isobutane dehydrogenation catalyst has high selectivity, stability and activity, good high-temperature stability, strong carbon deposition resistance and low relative deactivation rate, the active components are distributed on the carrier in an eggshell structure, the utilization rate of the active components is increased and the catalyst has a good industrial application prospect.

The invention discloses a preparation method and application of an aluminum zinc phosphate molecular sieve catalyst. The preparation method comprises the following steps of: (1) adding orthophosphoric acid into deionized water, then adding soluble zirconium salt or soluble titanium salt and a dispersing agent, heating to 50-60 DEG C while stirring, then adding soluble zinc salt, and after the soluble zinc salt is completely dissolved, adding pseudo-boehmite, uniformly stirring, adding a template agent, adjusting the pH value to 5-6 by using diluted hydrochloric acid, and continuously stirring to form a uniform jelly; (2) transferring the jelly into a homogeneous reaction kettle, aging the jelly while stirring, and then heating for constant-temperature crystallization reaction to obtain a crystallized product; (3) washing and filtering the crystallized product, drying the crystallized product, transferring the crystallized product into a calcining furnace, heating to 550-600 DEG C, and keeping the temperature for 4-6 hours to obtain molecular sieve raw powder; and (4) adding the molecular sieve raw powder into an aqueous solution added with 10-20% of aluminum sol to further obtain the aluminum zinc phosphate molecular sieve catalyst. The method has the advantages of being simple in technological process, low in production cost, safe, environmentally friendly, suitable for industrial large-scale production and the like.