Products Description

Product application

High-end electronics and semiconductors: the cornerstone of precision and miniaturization

Integrated circuit packaging and microwave devices: Its thickness can achieve industrial-grade accuracy of ±0.005mm, which can meet the transmission requirements of high-frequency and high-speed signals. It is used to manufacture mobile communication base station power amplifier matching circuits, filter resonators, etc.

Capacitors and sputtering targets: Niobium foil can be used as anode material or casing of electrolytic capacitors, and the surface area can be increased through surface treatment to develop high-capacity capacitors. At the same time, high-purity niobium foil is also a key sputtering target in semiconductor manufacturing for thin film deposition.

Scientific research and cutting-edge technology: a powerful tool for exploring the frontier

Particle accelerators and quantum computing: In the manufacture of superconducting radio frequency (SRF) cavities, 0.1mm niobium foil can be used to manufacture key auxiliary components such as tuner diaphragms. In the field of quantum computing, it is also the basic material for building superconducting qubits and resonant cavities.

Scientific research experiments and thin film deposition: Its high purity and flat surface make it an ideal substrate for thin film deposition. It is also used to manufacture precision scientific research equipment such as superconducting quantum interference devices (SQUID).

Chemicals and Industry: A barrier against corrosion
With excellent corrosion resistance, 0.1mm niobium foil can be used as a reactor lining to protect equipment from highly corrosive chemicals. At the same time, it is also used as a heat shield for high-temperature furnaces or as a protective layer for heating elements.

Why is it 0.1mm?

Among the many specifications of niobium foil, the reason why 0.1mm (i.e. 100 microns) has become a favored "golden thickness" is not accidental, but a delicate balance reached after the three-party game between material science, processing technology and engineering needs.

From the perspective of processability and structural strength, 0.1mm is a "sweet spot" in technology. Although niobium has excellent ductility, when the thickness of the foil is less than 0.05mm, its mechanical strength will drop sharply and become as fragile as aluminum foil. It is easy to wrinkle or even crack during subsequent stamping, cutting or welding, and the yield rate will be greatly reduced. If the thickness exceeds 0.2mm, the rigidity of the material will increase significantly and the necessary flexibility as a "foil" will be lost, making it difficult to meet the processing requirements of precision parts for complex curved surfaces and tiny bends. 0.1mm happens to be in this critical range - it is thin enough to easily carry out deep stamping and precision etching; and thick enough to maintain sufficient structural strength to ensure that it does not deform during molding and use.

From the perspective of physical performance, 0.1mm is the "effective layer" for many key characteristics. In high-temperature or high-frequency electromagnetic fields, physical effects often occur on the surface of materials. For example, when niobium is used in radio frequency superconducting cavities, its skin depth determines that current is mainly conducted on the surface. The thickness of 0.1mm not only ensures that the cross-sectional area of the conductor meets the current-carrying demand, but is also much smaller than the thermal diffusion length, which helps to achieve rapid and uniform heat exchange and avoid local overheating. This thickness will neither cause material waste and excessive heat capacity due to being too thick, nor will it cause a sharp increase in resistance or mechanical failure due to being too thin.

From the perspective of cost-effectiveness in engineering practice, 0.1mm is the "most economical" choice. Precision control of rolled niobium foil is extremely critical. High-quality 0.1mm niobium foil can achieve a tolerance of ±0.005mm, which is a mature and stable control level in industrial production. If we pursue thinner specifications, not only will the difficulty of rolling increase exponentially, but the requirements for equipment accuracy and clean environment will also rise sharply, causing costs to soar. If the thickness is relaxed, although the cost will be reduced, it will significantly increase the volume and weight of downstream devices, which is unacceptable in the fields of aerospace and microelectronics.

product parameters

Products name	0.1mm Pure Niobium Foil
Products purity	≥99.95%
Thickness	0.01mm – 2.0mm/ According to customer needs
Width	5mm – 600mm/customized
Length	According to customer needs
Supply status	roll, sheet, cut to length
Surface treatment	cold rolled (Y), annealed (M), bright surface, pickled surface
Tensile Strength	140–200 MPa
Elongation	≥30%
Product delivery	15-25 days
MOQ	10kg
Certifications	ISO9001:2015/CE