Sinto Advanced Ceramics Europe has added aluminum nitride and silicon nitride to its additive-manufacturing material portfolio. The company says both non-oxide ceramics passed internal evaluation, have been processed in initial projects and are now available for development work, prototypes and industrial applications. This is a portfolio expansion, not one standardised profile proven for every geometry.

The German business, formerly Bosch Advanced Ceramics, has operated as part of the Sintokogio Group since January 2026. Its service chain spans design and material selection, vat-photopolymerisation shaping, debinding, sintering and inspection. At ESA Industry Space Days 2026 it displayed aluminum-nitride sleeves and a heat exchanger alongside a silicon-nitride hold-down component.

Why the two nitride ceramics differ

Aluminum nitride can combine electrical insulation with useful thermal conductivity. That unusual pairing is valuable in thermal management, power electronics and semiconductor equipment, where heat must move without creating an electrical conductor. Actual conductivity depends strongly on purity, density, additives and sintering, so a generic material property is not the performance of a finished printed component.

Silicon nitride can provide high mechanical strength, fracture toughness and thermal-shock resistance. It is relevant to parts exposed to repeated temperature change and mechanical load. Sinto may also consider SiAlON for some shapes. Aluminum and oxygen partly substitute for silicon and nitrogen in that ceramic family, allowing chemical resistance and processing behaviour to be adjusted.

Shaping is only the first process step

Sinto lists SLA, LCM and LFD light-based vat-photopolymerisation routes. A photocurable suspension containing ceramic powder forms a green body. That printed object still contains polymer binder, so controlled debinding and high-temperature sintering follow. Final density, shrinkage and cracking risk are largely determined during those thermal stages.

Atmosphere and contamination are especially important for non-oxide ceramics. Oxidation, residual carbon, pores or uneven additive distribution can damage thermal and mechanical performance. Additive access to a complex internal channel helps only if binder can leave the green body safely, shrinkage is predictable and the sintered part measurably reaches its targets.

What industrial availability means

Sinto says it adds a material only after component quality, process stability and reproducibility satisfy its industrial-manufacturing requirements. That is a meaningful vendor statement, but the release provides no numerical density, conductivity, flexural strength, lot-to-lot variation or acceptance limits. A customer programme still needs its own datasheet, geometry evaluation and application qualification.

ISO 9001:2015 certification applies to the quality-management system. It does not automatically qualify every printed nitride part for space, medical or semiconductor use. A component may require separate standards, material testing, cleanliness or biocompatibility evidence.

Where additive manufacturing can help

Ceramic AM is strongest when geometry is difficult to press or machine: internal channels, integrated heat exchangers, thin insulating ribs, short runs or rapid design iterations. A simple high-volume part suited to pressing may remain cheaper conventionally. The whole process chain, not printing alone, decides the business case.

The aluminum-nitride heat exchanger is particularly instructive because internal channels and thermally conductive but electrically insulating walls can combine into one function. Geometric freedom also creates a new inspection burden. CT, dimensional checks, density and leak testing may be needed before hidden passages can be accepted.

Verified facts and open questions

Verified facts are the formal addition of both materials to Sinto's offer, its vat-photopolymerisation process chain and the demonstrators shown at the ESA event. Reproducible industrial quality and scalable series production remain company claims. Price, minimum order, maximum size, wall thickness, tolerance, finished properties and customer-qualified geometries were not disclosed.

Editorial conclusion

The portfolio expansion is material because it adds two different functional profiles beside oxide ceramics: aluminum nitride for thermally conductive insulation and silicon nitride for mechanical and thermal-shock duty. LAYERTIMES considers numerical, geometry-specific process and property data the next important evidence. Until then, the announcement establishes a development capability rather than a universal finished-part specification.