Many friends know that pure tantalum plate is a metal material with high melting point, good electrical and thermal conductivity, high chemical stability, excellent high temperature strength, good processability, weldability, low plastic brittle transition temperature, excellent dynamic mechanical properties, and dense, stable and high dielectric constant amorphous oxide film formed on the surface after oxidation treatment, Furthermore, it is widely used in fields such as electronics, chemical engineering, aerospace, military weapons, medical and health care.

Pure tantalum plates are mainly used in the electronic industry. Tantalum capacitors have small size, large capacity, high reliability, long service life, good withstand voltage performance, and stable functions. They have been widely used in communication, computer integrated circuits, automotive electronic control systems, digital appliances, and other fields.

The shell of all tantalum capacitors is a cup protrusion formed by deep drawing. Pure tantalum plates produced in China are prone to cracking, wrinkling, orange peel, ear making, and other phenomena during deep drawing of tantalum shells, resulting in low yield and difficulty in meeting the requirements of high performance and high reliability. At present, there is no research on the effects of cold deformation and heat treatment processes on the mechanical properties of pure tantalum plates. Here, the application background is the stretching and stamping forming of tantalum capacitors. By controlling the heat treatment process, the mechanical properties and stretching deformation mechanical properties of tantalum are studied, providing a theoretical basis for formulating the stretching processing process of tantalum.

The analysis of tensile fracture morphology shows that after pre deformation and heat treatment, pure tantalum plates undergo a transition from ductile fracture to brittle fracture, with a mixed fracture mechanism consisting of intergranular fracture, cleavage fracture, and ductile fracture. The analysis of fracture morphology and mechanical properties results are the same.

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