Multi-atmosphere furnace | Improvement of reproducibility in ceramics sintering and densification conditions

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last updated：Jun 05, 2026

サーモニックENG

Manage dew point and oxygen concentration to reproducibly evaluate ceramics sintering and densification conditions.

In the sintering and densification of ceramics, not only temperature but also atmospheric gas, dew point, oxygen concentration, and heating conditions affect density, porosity, grain growth, and surface condition. In particular, when managing firing in a humid atmosphere, switching between oxidizing and reducing atmospheres, or controlling atmospheric history such as drying → humidifying → drying, it can be difficult to reproduce conditions with conventional electric furnaces or tube furnaces. Our multi-atmosphere furnace can switch to various atmospheric gases such as N2, Ar, Air, H2, and NH3 after displacing the air in the furnace through vacuum replacement. Additionally, by connecting a Wetter, it is possible to examine ceramic firing conditions that manage humid atmospheres and dew points. 【Features】 ■ Capable of switching to various gas atmospheres after vacuum replacement ■ Supports humid atmosphere and dew point control through Wetter connection ■ Can manage atmospheric history such as drying → humidifying → drying ■ Enables examination of sintering, densification, and high-density conditions for ceramics ■ Condition management combining dew point meters and O2 meters can also be considered *For more details, please download the materials or contact us.

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basic information

【Basic Configuration】 ■ Atmosphere: N2, Ar, Air, H2, NH3, humid gases, etc. ■ Humidification Method: Humid atmosphere control via Wetter connection ■ Replacement Method: Switch to target gas after vacuum replacement ■ Measurement: Selection of dew point meter, O2 meter, flow meter, etc. according to application ■ Required Utilities: Electricity, cooling water, process gas 【Capabilities】 ■ Examination of sintering and densification conditions for ceramics ■ Comparison of particle growth and high-density conditions under humid atmosphere ■ Evaluation of switching between dry atmosphere, humid atmosphere, and reducing atmosphere ■ Firing managed with dew point, oxygen concentration, and gas flow ■ Gas line design considering humidification, condensation, and backflow *Specifications can be customized according to materials, temperature, dew point, gas type, and processing volume.

Price information

*Please feel free to contact us for more details, as prices may vary depending on the device specifications.

Delivery Time

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※*Please feel free to contact us for more details, as delivery times may vary depending on the specifications of the equipment.

Applications/Examples of results

【Applicable Fields】 ■ Sintering, densification, and high-density processing of ceramic powders and molded bodies ■ Atmosphere firing of oxide, nitride, and carbide ceramics ■ Comparative evaluation in humid, reducing, and inert atmospheres ■ Examination of conditions for grain growth, porosity, density, and surface state ■ Reactive firing of materials including sintering aids and additives ■ Research and development and trial condition examination managed by dew point and O2 concentration 【For Such Issues】 ■ Unstable moisture supply from cylinders makes it difficult to reproduce humid conditions ■ Variability in densification, grain growth, and surface state due to humidification fluctuations ■ Concerns about condensation, backflow, contamination in piping, and corrosion ■ Time-consuming condition setting in tube furnaces ■ Desire to compare dry and humid atmospheres in short cycles ■ Want to confirm firing conditions on a small scale before deciding on equipment specifications Even at the stage where materials, processing temperatures, gas types, and dew point conditions are not yet determined, we welcome consultations based on your application needs.