Description: Doped tungsten wire have good resistance to drop ability, good resistance to high temperature and vibration and void reformation.
tungsten wire (8) doped tungsten wire (1) undoped tungsten wire (1)
Doping is that in order to prevent or control recrystallization or grain growth in sintering or using, adding a few other elements or compounds, making materials produce certain electrical, magnetic and optical properties.
Doped tungsten, also called non-sag tungsten, is a remarkable kind of dispersion strengthened material. The term non-sag refers to the resistance of the wire against deformation or sagging under its own weight at working temperature. The intentional simultaneous use of K-compounds, Si-compounds, and Al-compounds as dopes for tungsten is in order to obtain a well-defined internal interlocking structure.
Doped tungsten wire are products incorporating the silicon and aluminum oxide into the tungsten wires in the milling process. Doped tungsten wire are manufactured by the high tech of doping, acid washing, isostatic pressing, program control direct-sintering, swaging and auto feeding. The products are featured with minimum deformation at high temperatures, high recrystallization temperatures and excellent coil ability.