Nanocrystalline and amorphous alloy manufacturing for solid-state transformer magnetic components
Our core technology revolves around the production of nanocrystalline alloys with grain sizes typically in the range of 10-100 nanometers. This unique structure gives our materials exceptional magnetic properties that outperform conventional materials.
Through proprietary manufacturing processes, we achieve precise control over grain structure and orientation, resulting in materials with superior permeability, low coercivity, and excellent thermal stability.
2-5x
Higher than conventional materials
30-50%
Lower than conventional materials
10x
Higher than ferrites
-50°C to 150°C
Wide operating range
Solid-state transformers replace traditional line-frequency magnetic components with medium-frequency power conversion. This shift demands soft magnetic materials that maintain low loss and high permeability from several kHz to hundreds of kHz — a range where conventional silicon steel fails and ferrite saturates too early.
Jing Electronics develops both amorphous and nanocrystalline alloys through rapid solidification and controlled crystallization. Amorphous ribbons serve SST line reactors and input filters; nanocrystalline cores are used in the medium-frequency isolation transformer — the heart of every SST module.
Non-crystalline structure; optimal for power-frequency reactors and SST input stages with minimal eddy-current loss.
10-100 nm grains; 2-5× permeability vs. conventional materials; ideal for SST MF transformer cores.
Our proprietary manufacturing process ensures consistent quality and exceptional material properties in every product we deliver
We start with high-purity raw materials, carefully selected and blended to create the optimal alloy composition. Our precise mixing process ensures uniform distribution of elements.
Our proprietary rapidly ejected process produces thin ribbons with amorphous structure. The alloy is heated to molten state and rapidly quenched on a rotating copper wheel.
Subsequently, the amorphous ribbon undergoes controlled annealing treatment (at temperatures around 500–600°C) in a protective atmosphere. This process triggers the nucleation and growth of nanoscale crystals (typically 10–20 nm in size) within the amorphous matrix, transforming the ribbon into a nanocrystalline structure with excellent magnetic properties.
For toroidal cores: Wind the cut ribbons layer by layer on special molds, ensuring tight adhesion between layers to form a closed-loop structure. For laminated cores (e.g., E-shaped, C-shaped): Cut the ribbons into single pieces of corresponding shapes, stack them in a specific direction, and fix them with tooling.
The nanocrystalline epoxy spraying process is a key procedure that forms a uniform epoxy coating on nanocrystalline cores via surface pretreatment, epoxy spraying, curing, and quality control to enhance their insulation, mechanical strength, and environmental protection performance.
