Rare earth aluminum alloy with high thermal conductivity

Abstract

The invention provides a rare earth aluminum alloy with high thermal conductivity. Mixed rare earth element RE composed of lanthanum and yttrium is added into 6063 aluminum alloy to form the rare earth aluminum alloy, wherein in the 6063 aluminum alloy, Mg accounts for 0.45 to 0.8 weight percent of the total weight of the rare earth aluminum alloy, Si accounts for 0.25 to 0.6 weight percent of the total weight of the rare earth aluminum alloy, Fe accounts for less than 0.35 weight percent of the rare earth aluminum alloy, Cu accounts for less than 0.1 weight percent of the rare earth aluminum alloy, Zn accounts for less than 0.1 weight percent of the rare earth aluminum alloy, and Ti accounts for less than 0.1 weight percent of the rare earth aluminum alloy. Mixed RE accounts for 0.1 to 0.5 weight percent of the total weight of the rare earth aluminum alloy, and comprises 5 to 80 weight percent of lanthanum and 1 to 20 weight percent of yttrium. Besides the above elements, the rest component of the rare earth aluminum alloy is Al. By adding a certain amount of mixed rare earth, the thermal conductivity of the aluminum alloy, the plastic forming property and processing property of the alloy are improved.

Description

Technical field: [0001] The invention relates to the technical field of metal alloys, in particular to a rare earth aluminum alloy with high thermal conductivity. Background technique: [0002] In the context of increasing energy shortage and global warming, all countries are seeking to develop a "low-carbon economy". As one of the major energy consumers, lighting sources have become the focus of social attention. Relevant studies have shown that traditional light sources have a low energy utilization rate and can only convert 5% of electrical energy into light energy, resulting in serious energy waste. The light-emitting diode (LED) has outstanding advantages such as low energy consumption, long life, no radiation, environmental protection, and good weather resistance, and is called a new generation of green and environmentally friendly light sources. Under the same brightness, it can save energy by more than 80% compared with incandescent lamps, and save energy by more th...

AI Technical Summary

Problems solved by technology

So far, although relevant researchers have made many useful explorations for LED heat dissipation, most of them have improved the heat sink from the appearance and structure. Although some achievements have been made, there is still a lack of basic materials for excellent LED light source heat sinks.

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