Founded in 1994, BACH Resistor Ceramics GmbH (hereinafter referred to as Bach RC) is the largest manufacturer of silicon nitride ceramic heating elements in Germany and Europe. Bach RC has its own patented technology and produces 100% ceramic heating elements, developing from a research laboratory to a medium-sized company active worldwide.
Compared with traditional metal heating elements, Bach RC's 100% ceramic heating elements made of silicon nitride and aluminum nitride have many advantages. Due to the low density and low heat capacity of the ceramic material, it is very suitable for application scenarios that handle temperatures up to 1000°C, and the energy consumption is very low. This extraordinary technology achieves uniform conductivity of the ceramic material and can be sintered evenly with the insulating ceramic shell, and can provide continuous high performance. These ceramic materials have extremely high wear and oxidation resistance, which guarantees excellent durability and a long service life.
Bach RC can process silicon nitride heating elements with an area ranging from 1 square millimeter to 125 000 square millimeters. Silicon nitride ceramic materials have a compressive strength of up to 2000 MPa and a Young's modulus of up to 300 GPa, which remains unchanged below 1000°C with almost no self-deformation.
Bach RC's core competencies * Electrical and thermal calculation measurements and related designs; * Bach RC's own patented technology for the production of heating elements made of high-performance ceramics; * High-vacuum brazing of ceramics; * High-precision processing of ceramics (drilling, sawing, grinding, rounding, laser cutting); * Hot pressing sintering of high-performance ceramics.
Properties of related base materials
Parameter | Scale unit | Si3N4 |
max. temperature (Tmax) | C° | 1 000 |
thermal conductivity (λ) | W/mk | 40 |
temperature shock resistance (ΔT) | K | 500 |
emissivity (1100 °C)(E) | — | 0.96 |
Young's modulus (E) | GPa | 320 |
bending strength (ōBB) | MPa | 400 |
compressive strength (ōp) | MPa | 2 000 |
coefficient of thermal expansion(a) | 10-6 K-1 | 3 |
density (p) | g/cm3 | 3.21 |
specific heat (cp) | J/kgK | 750 |
porosity(100 -% t.D.) | % | 0 |
critical stress intensity factor (K) | MPa m½ | 6 |
Weibull - modulus (m) | — | 7.9 |
Share: