Debinding and sintering of Solid Oxide Fuel Cells

Perfect product quality through temperature homogeneity
and atmosphere control

Solid Oxide Fuel Cells (SOFC) are an electrochemical conversion device. They are characterized by their use of a solid oxide as the electrolyte which’s crystal lattice allows for movement of oxide ions.
There are two distinct types of SOFC: Planar and tubular.

The green part is usually made by combining ceramic powder with organic binder and other liquid, and giving it its final shape, or applying it to some sort of carrier. They receive their typical properties after a debinding and sintering process at very high temperatures.

ONEJOON mastered the technology to control the firing curve and atmosphere required in the manufacturing of SOFCs. Our expert engineers are aware of the unique challenges faced in the manufacturing process and can help you deploy the right tools and equipment to face them. 

One of the biggest challenges in debinding SOFC is proper binder removal, as well as hot-spot and carbon deposit prevention. ONEJOON furnaces achieve this by controlling the homogeneous flow of process gasses through the furnace, kiln furniture and over the cells. 

Precise temperature control not only in the individual control zones, but in the entire feed, ensures highest product quality and process repeatability.  

ONEJOON validates and optimizes the kiln furniture, firing curves and process gas flow via CFD simulations. Our CFD simulation models are validated through real world measurements, tests and experiments in our test centers or on site, wherever possible. The gathered data is continuously applied assuring and improving the accuracy of our models and simulation results.

Processes

Debinding

In thermal debinding, the ceramic green body is heated and the binder is removed in the form of steam. This can be achieved by heating at ambient pressure in an oxidative or non-oxidative
atmosphere or in a vacuum. The process control during debinding is demanding. It requires an exact start at the required temperature, the controlling of chemical reactions in the product and a high temperature homogeneity. Thanks to a variety of furnace systems, ONEJOON can offer perfectly customized solutions.

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Sintering

There are many different sintering techniques and sintering processes, resulting in different properties of the sintered product. However, an end product with a reproducible and exactly defined microstructure is desired. The furnace technology is adapted by our engineers to your specific requirements and needs.

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