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Developed by RATH, Produced in the EU: Innovative Continuous Oxide Ceramic Fibers for Industrial Applications
Based on 35 years of experience in the development and production of high-temperature ceramic fibers, RATH (AT) is always exploring innovative ways to offer new product solutions to the industry. One example of this: The international refractories manufacturer has been developing continuous oxide ceramic fibers for several years as part of the HORIZON EUROPE project InVECOF (Innovative Value Chains for European Ceramic Oxide Fibers). Currently a fiber production plant is being built. The long-term goal is to become the first European supplier of continuous oxide ceramic fibers and to produce up to 10 tons per year as a first step.
Continuous oxide ceramic fibers are widely used, especially as reinforcing fibers in various matrices (CMC, MMC). Due to their high tensile strength and stiffness as well as their excellent chemical and thermal resistance, continuous filaments can, for example, provide ceramic matrices with quasi-ductile, damage-tolerant fracture behavior. “These continuous fibers are an important raw material for the production of oxide ceramic matrix composites. However, the manufacturing process for such fibers is complex and there are very few suppliers worldwide, which makes it even more difficult to establish secure supply chains,” says Christopher Kluthe, Senior R&D Manager, RATH.
After thermal treatment, these fibers, which are produced using the sol-gel process in a dry spinning process, have a mullite or corundum microstructure. So far, RATH has developed the mullite fiber M75 (with a tensile strength of up to 1500 MPa and a modulus of elasticity of over 200 GPa) and the corundum fiber K99 (with a tensile strength of up to 3000 MPa and a modulus of elasticity of over 350 GPa). Production processes for all the relevant manufacturing steps were developed in collaboration with specialist companies.
Completion of a fiber production plant by autumn 2024
Christopher Kluthe sees the transfer of the excellent results from the pilot plant to production scale as the current priority challenge in fiber development and also takes a look at the near and longer-term future: a fiber production plant is scheduled for completion by autumn 2024. The current focus is the production of larger quantities of K99 and M75 fibers for the manufacture of fabrics and composites, as well as the development of further grades, especially those with higher creep resistance. “The long-term goal is to become the first European supplier of oxide ceramic fibers and to produce up to 10 tons per year as a first step,” says Christopher Kluthe, summarizing the current state of development.
For further questions contact RATH directly:
info@rath-group.com
