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Heavyweight! Significant technological breakthroughs have been made in the research and development of high-performance titanium alloy foil preparatio

Recently, a new metal material and near net forming technology team from Mingyue Lake in Chongqing's Liangjiang Collaborative Innovation Zone has made significant technological breakthroughs in the preparation of 950MPa high-strength titanium alloy foils. The new high-temperature and high-strength alloy products developed by them have filled the gap in domestic related products.
The technical team is jointly established by the Chongqing Science and Technology Innovation Center of Northwestern Polytechnical University and the Chongqing Third Aviation New Materials Technology Research Institute. The team is responsible for the municipal key scientific research project "Development and Application of High Temperature Metal Foil Materials for Aerospace", which breaks through the high-quality preparation and production technology of high-end metal sheets and foils. Next, the team plans to further promote the industrialization process of this technology at Chongqing Sanhang New Materials Technology Research Institute, in order to achieve large-scale production of titanium alloy plates and foils.
High performance titanium alloy sheets and foils can not only be applied in the aerospace field, but can also be expanded to multiple fields such as packaging materials for aerospace electronic equipment, foldable screens for mobile phones, and bipolar plates for hydrogen fuel cells.
01. Spacecraft
Titanium alloy plates and foils are widely used in aerospace vehicles, such as honeycomb panels, sandwich structural panels, etc. They are essential materials for lightweight, high-strength, and high-temperature resistant structural components. However, with the proposal of hypersonic aircraft design concepts and research and development requirements, the demand for lightweight structures and high-temperature resistant titanium alloy plates and foils has correspondingly increased. Traditional TA2 and TA3 pure titanium, as well as TA18 and TC1 alloy plates and foils, can no longer meet the requirements for use in high-temperature and high stress environments. Therefore, it is urgent to develop titanium alloy plates and foils with higher strength, thinner thickness, and better high-temperature performance.
TC4 alloy and Ti2AlNb alloy can withstand operating temperatures of 350-500 ℃ and 500-750 ℃, respectively, with higher strength and stiffness, better heat resistance, and better corrosion and fatigue resistance. The use of high-performance titanium alloy sheets can improve the specific strength and heat resistance of aerospace structural components, thereby improving the overall performance of the aircraft and providing material foundation support for the new generation of hypersonic aircraft.
02. Mobile phone folding screen
In order to pursue the lightness and lightness of the product while ensuring sufficient strength, mobile phone manufacturers choose to apply more new materials, such as adding titanium alloy material to the axle cover. Titanium alloy is lightweight and very sturdy. The hinge cover made of titanium alloy has a strength 150% higher than that of aluminum alloy material, and the hinge width is reduced by 27%. It also has toughness and enhanced corrosion resistance, providing more reliable protection for foldable screen phones.
03. Hydrogen fuel cell bipolar plate
Titanium and its alloys have low density, high specific strength, and excellent corrosion resistance in acidic environments, making them highly valuable in hydrogen fuel cell bipolar plates.
The materials of bipolar plates are mainly divided into three types, including graphite bipolar plates, composite bipolar plates, and metal bipolar plates. Among them, the metal bipolar plate has the characteristics of thin thickness, excellent thermal conductivity, high mechanical strength, and good gas barrier, which helps to improve the power density of the battery. In addition, the processing technology of metal materials is relatively mature, and high-precision complex flow fields can be manufactured through methods such as stamping, die-casting, and laser forming, making it easy to achieve large-scale production of electrode plates. Therefore, metal bipolar plates are the mainstream choice for hydrogen fuel cell bipolar plate materials.
Stainless steel, aluminum alloy, and titanium alloy are common bipolar plate materials in metal materials. Among them, titanium and titanium alloys have low density and high specific strength, and have excellent corrosion resistance in hydrogen fuel cells. They can significantly reduce the weight and volume of bipolar plates, thereby greatly improving the mass power ratio and volume power ratio of the battery. Meanwhile, the corrosion products generated during the use of titanium and titanium alloys have lower toxicity to proton exchange membranes and catalysts, which helps to improve the stability and durability of batteries.

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