63results about How to "Disadvantages of lower usage" patented technology

The invention discloses a dual-phase α+β magnesium-lithium alloy with excellent casting performance and heat transfer performance and a processing technology thereof. According to weight percentage, the composition of the alloy is: Li: 8.0‑10.0wt.%, Ge: 0.2‑0.8wt.%, Cd: 0.6‑0.8wt.%, Bi: 0.2‑0.5wt.%, Zr: 0.4‑ 0.8wt.%, Pd: 0.1‑0.2wt.%, Cu: 0.3‑0.5wt.%, Al: 1.8‑3.4wt.%, Fe: 0.2‑0.5wt.%, Mn: 0.1‑0.4wt.%, The balance is magnesium. The magnesium-lithium alloy for die-casting has high thermal conductivity that traditional magnesium-lithium alloys do not possess. This enables the alloy to have further specific applications in the occasions where the heat generation is large and the weight of the device is required, and it is convenient for large-scale industrial application.

The invention discloses a flame-retardant aluminum-lithium alloy containing Sc and Te when smelted between 700-800 degrees and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.0‑6.0wt.%, Sc: 2.0‑3.0wt.%, Sr: 4.0‑8.0wt.%, Te: 1.0‑2.0wt.%, Si: 2.0 ‑4.0wt.%, Sn: 1.0‑2.0wt.%, Er: 0.5‑1.5wt.%, Yb: 0.2‑0.8wt.%, Nd: 0.2‑0.4wt.%, and the balance is aluminum. The alloy melt has extremely excellent flame retardancy under static conditions. In the dynamic process, when the surface film is destroyed by violent stirring, it can still be regenerated quickly, successfully hindering the oxidative combustion of the alloy.

The invention discloses a corrosion-resistant Au-Li-Os gold-lithium alloy for electrical contact materials. In terms of weight percentage, the chemical composition of the alloy is: Li:0.2‑0.6wt.%, Os:0.2‑0.3wt.%, Ca:0.5‑1.5wt.%, Sb:0.2‑0.4wt.%, Sn:1.0‑ 1.5wt.%, Co: 0.4‑0.5wt.%, Mo: 0.1‑0.2wt.%, Pd: 0.2‑0.4wt.%, Si: 0.1‑0.2wt.%, B: 0.2‑0.4wt.%, The balance is gold. Compared with traditional electrical contact gold alloys, the material has excellent mechanical properties, high electrical conductivity and high corrosion resistance.

The invention discloses an aluminum-lithium alloy with extremely excellent die-casting performance when smelted between 700-800 degrees and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li: 4.0‑8.0wt.%, Sr: 1.0‑1.5wt.%, Si: 2.0‑3.0wt.%, Mg: 1.0‑1.5wt.%, Ge: 0.5 ‑1.2wt.%, Th: 0.1‑0.3wt.%, Nd: 0.2‑0.5wt.%, B: 0.5‑1.2wt.%, and the balance is aluminum. The aluminum-lithium alloy material has good casting properties and is suitable for pressure casting of thin-walled parts under a protective atmosphere. It is especially suitable for casting lightweight structural materials that require lightweight features, and has a huge market prospect.

The invention discloses an Al-Li-Mn aluminum-lithium alloy with combustion resistance when smelted between 700-800 degrees and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.0‑6.0wt.%, Mn: 1.0‑3.0wt.%, Sr: 2.0‑6.0wt.%, Ba: 1.0‑2.0wt.%, Sc: 1.0 ‑2.0wt.%, Pr: 0.1‑0.8wt.%, Tb: 0.2‑0.4wt.%, B: 1.0‑2.0wt.%, and the balance is aluminum. This patent provides a novel material science solution for the current situation that aluminum-lithium alloys need to be protected and smelted at high temperatures. The type, composition and content of the oxide film and nitride film formed on the surface of the melt are changed by screening alloying elements. In the process of melt treatment such as stirring and air blowing, when the surface film is destroyed by violent stirring, it can still be regenerated quickly, successfully preventing the oxidative combustion of the alloy. The obtained alloy surface oxide film and nitride film have very good plasticity and viscosity, can completely spread and cover the alloy surface, and effectively prevent oxygen from invading into the alloy liquid.

The invention discloses a Mg-Li-V alloy with combustion resistance during smelting and a processing technology thereof. In terms of weight percentage, the composition of the alloy is: Li:6.0‑18.0wt.%, V:2.0‑6.0wt.%, Ca:2.0‑3.0wt.%, Sr:3.0‑6.0wt.%, Si:1.0‑ 2.0wt.%, Tb: 0.2‑0.4wt.%, Nd: 0.1‑0.2wt.%, Yb: 0.2‑0.3wt.%, B: 1.0‑2.0wt.%, and the balance is magnesium. The invention provides a novel material science solution for the current situation that protective melting of magnesium-lithium alloys at high temperatures needs to be carried out during melting. By screening the alloy elements to change the type, composition and content of the oxide film and nitride film formed on the surface of the melt, a dense and durable protective film is formed on the surface of the magnesium-lithium melt. The ignition temperature of the magnesium-lithium alloy can be obviously increased, and the burning phenomenon of the magnesium-lithium alloy smelted in the atmospheric state can be effectively prevented. The obtained magnesium-lithium alloy material has the mechanical properties of traditional magnesium-lithium alloys at room temperature, and has high-temperature mechanical properties that traditional magnesium-lithium alloys do not have: at 150 degrees, the yield strength is 100-120MPa, while the traditional material at 150 degrees, yields The strength is about 65MPa.

The invention discloses an ultra-light flame-retardant high-damping Al-Mg-Li-Sn aluminum-lithium alloy and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li: 6.0‑8.0wt.%, Mg: 8.0‑12.0wt.%, Sn: 2.0‑3.0wt.%, Sr: 2.0‑4.0wt.%, Ca: 0.5 ‑1.0wt.%, Ge: 0.5‑0.8wt.%, Zr: 0.2‑0.6wt.%, Pr: 0.1‑0.2wt.%, S: 0.4‑0.8wt.%, B: 1.2‑1.5wt.% , and the balance is aluminum. The material has the mechanical properties of traditional aluminum-lithium alloys, and has low density and high damping properties that traditional aluminum-lithium alloys do not have: SDC=3-10%, and traditional materials are about SDC=0.5-0.8%.

The invention discloses an aluminum-strontium alloy with extremely excellent die-casting performance when smelted between 700-800 degrees and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Sr: 1.0‑1.6wt.%, Ca: 0.4‑0.5wt.%, Ge: 1.2‑1.5wt.%, Ru: 0.4‑0.6wt.%, V: 0.2 ‑0.5wt.%, Ti: 0.1‑0.2wt.%, Sm: 0.2‑0.3wt.%, Eu: 0.1‑0.2wt.%, and the balance is aluminum. The aluminum-strontium alloy material has good casting properties and is suitable for pressure casting of thin-walled parts under a protective atmosphere. It is especially suitable for casting lightweight structural materials that require lightweight features, and has a huge market prospect.

The invention discloses an Al-Li-Ta aluminum and lithium alloy and a machining technology thereof. The Al-Li-Ta aluminum and lithium alloy is smelted at the temperature of 700-800 DEG C and has a combustion resistant property. The Al-Li-Ta alloy is composed of, by weight, 2.0-6.0% of Li, 1.0-2.0% of Ta, 2.0-8.0% of Sr, 1.0-4.0% of In, 0.2-0.6% of Gd, 0.2-0.4% of Dy, 0.1-0.2% of Ho, 1.0-2.5% of B and the balance aluminum. By adopting the optimized alloying method, the utilization amount of the alloy elements can be reduced greatly, a very good combustion resistant effect can be achieved, and the combustion point of the alloy rises sharply while the content of the combustion resistant elements is reduced obviously. The purpose that the alloy can be subjected to heat preservation and standingfor 5 hours without obvious combustion under the atmosphere environment within the range of 700-800 DEG C. The alloy material has the mechanical property of a traditional aluminum and lithium alloy,the yield strength is 400-650 MPa, the tensile strength is 500-750 MPa, and the ductility is 4-15%. Meanwhile, the alloy has the high heat conductivity property which the traditional aluminum and lithium alloy does not have, the heat conductivity coefficient is 120-140W / m.K, while the heat conductivity coefficient of the traditional aluminum and lithium alloy is about 85W / m.K.

The invention discloses an Al-Li-V aluminum lithium alloy and a processing technique of the Al-Li-V aluminum lithium alloy, wherein the Al-Li-V aluminum lithium alloy has an anti-burning property whensmelted at the temperature of 700-800 DEG C. The Al-Li-V aluminum lithium alloy comprises the following components by weight percent: 2.0-8.0 wt.% of Li, 2.0-4.0 wt.% of V, 2.0-4.0 wt.% of Ca, 1.0-2.0 wt.% of Sr, 1.0-2.0 wt.% of Sn, 0.4-0.8 wt.% of In, 0.2-0.4 wt.% of Pr, 0.1-0.2 wt.% Yb, 0.5-1.0 wt.% of S, 1.0-2.0 wt.% of B, and the balance of Al. Through an optimized alloying method, the defectof the use amount of the alloy elements is greatly reduced, the quite excellent flame retardant effect is also acquired, and the ignition point of the alloy is greatly improved while the content of the flame retardant element is obviously reduced. The Al-Li-V aluminum lithium alloy does not burn obviously after being thermally preserved and standing for 5 hours within the scope of 700-800 DEG C under the atmospheric environment. The material has the mechanical property of the traditional aluminum lithium alloy, the yield strength is 400-650 MPa, the tensile strength is 500-750 MPa, and the percentage of elongation is 4-15%. The Al-Li-V aluminum lithium alloy has the high heat conducting property that the traditional aluminum lithium alloy does not have, the heat conductivity is 120-140 W / m.k, and the heat conductivity is of the traditional aluminum lithium alloy is about 85 W / m.k.

The invention discloses a corrosion-resistant Ag-Li-Y silver-lithium alloy with conductivity close to that of pure silver. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑3.2wt.%, Y:0.2‑0.5wt.%, Mg:0.8‑1.2wt.%, Ti:0.2‑0.4wt.%, Ca:0.8‑ 1.5wt.%, Ge: 0.1‑0.3wt.%, Pt: 0.2‑0.4wt.%, Th: 0.1‑0.5wt.%, Er: 0.1‑0.4wt.%, B: 0.2‑0.6wt.%, The balance is silver. Compared with traditional electrical contact silver alloys, this material has excellent mechanical properties, high electrical conductivity and strong corrosion resistance.

The invention discloses an Ag-Li-Sm silver-lithium alloy with high thermal conductivity and electrical conductivity and a processing technology thereof. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑2.5wt.%, V:1.0‑1.8wt.%, Pt:0.2‑0.4wt.%, Nb:0.3‑0.8wt.%, Sr:1.0‑ 1.6wt.%, Ca: 0.2‑0.4wt.%, Sm: 0.2‑0.5wt.%, Ho: 0.1‑0.2wt.%, S: 0.5‑0.8wt.%, B: 0.5‑0.9wt.%, The balance is silver. Compared with silver alloys used in traditional electrical contact materials, this material has excellent mechanical properties, high electrical conductivity and high heat transfer coefficient.

The invention discloses a platinum alloy containing Ti and used as a high-conductivity and high-strength electrical contact material. By weight percentage, the chemical composition of the alloy is: Ti:2.5‑3.0wt.%, Sn:1.5‑3.0wt.%, Sc:0.2‑0.4wt.%, Ru:0.2‑0.5wt.%, Si:1.0‑ 1.5wt.%, Cu: 0.4‑0.5wt.%, Re: 0.2‑0.6wt.%, Er: 0.2‑0.4wt.%, B: 0.5‑0.9wt.%, and the balance is platinum. Compared with traditional electrical contact platinum alloys, the material has excellent mechanical properties and electrical conductivity.