New type negative thermal expansion material developed by Institute of Physics and Chemistry, Chinese Academy of Sciences

Recently, Li Laifeng, a researcher at the Key Laboratory of Cryogenic Engineering of the Institute of Physics and Chemistry, Chinese Academy of Sciences, and a research team led by Huang Rongjin, a researcher, have taken the lead in carrying out research on the negative thermal expansion properties of NaZn13 LaFeSi-based compounds. Through the composition and structure design of LaFeSi-based compounds, they succeeded in developing novel negative thermal expansion materials with negative thermal expansion coefficients and negative thermal expansion temperature regions that can be adjusted by changing the compositional elements. For example, the composition of LaFe10.5Co1.0Si1.5 has a thermal expansion coefficient of -26.1×10-6K-1 in the 240-350K temperature range.

Bracket Aluminium Profile Extrusion Dies

Aluminum alloy bracket is a support structure made of aluminum alloy material, which is commonly used in construction, automobile, aerospace and other fields. Aluminum alloy brackets are lightweight, high-strength, and corrosion-resistant. They can withstand greater weight and pressure while having good stability and durability. Aluminum alloy brackets are often used in construction to build temporary support structures, suspended ceilings, and install mezzanines, etc., which can provide stable support and protection. In the automotive and aerospace fields, aluminum alloy brackets are often used to manufacture car body structures and aircraft fuselages to reduce overall weight and increase load capacity. The use of aluminum alloy brackets can improve the safety and efficiency of the project and has good environmental performance.

Comparison between aluminum alloy brackets and iron brackets

The comparison between aluminum alloy brackets and iron brackets can mainly be compared from the following aspects:

1. Material: The aluminum alloy bracket is made of aluminum alloy material, while the iron bracket is made of iron material. Aluminum alloys have higher strength and corrosion resistance, while iron materials are stronger and more durable.

2. Weight: Aluminum alloy brackets are relatively light and lighter than iron brackets. This makes the aluminum bracket easier to handle and install.

3. Strength: Iron brackets are relatively strong and stable and can withstand greater weight and pressure. The aluminum alloy bracket has low strength and is not suitable for carrying heavy objects.

4. Corrosion resistance: Aluminum alloy brackets have good corrosion resistance, are not easy to rust and corrode, and are suitable for outdoor environments. Iron brackets are prone to rust and require anti-corrosion treatment.

5. Cost: Generally, the cost of aluminum alloy brackets is higher, while the cost of iron brackets is relatively low.

To sum up, aluminum alloy brackets are suitable for scenes with light load and high corrosion resistance requirements, such as outdoor environments; while iron brackets are suitable for scenes that carry larger weights and have lower cost requirements. When choosing a bracket, you need to choose it based on your specific needs.

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