Belgian SME specializing in two-phase capillary cooling systems and electromagnetic metal joining for aerospace, electrical, and industrial applications.
CALYOS is a Belgian SME specializing in advanced thermal management and heat transfer technologies, with a parallel competency in electromagnetic metal joining processes. In practice, they develop two-phase (biphasic) cooling systems using capillary loop technology — a compact, highly efficient heat transport approach relevant to electronics, aerospace, and industrial applications. They also work on magnetic pulse welding, a solid-state process for joining dissimilar metals such as copper and aluminium without heat-induced distortion. This dual focus — joining technologies and thermal management — positions them as a niche engineering company bridging materials processing and thermal systems design.
BISANCE (2019-2023) focused specifically on integrating biphasic heat transport using capillary loop technology into composite aircraft nacelles for efficient heat exchange.
JOIN-EM (2015-2018) addressed the joining of copper to aluminium using electromagnetic field-based forming — a process with direct applications in electrical and thermal component manufacturing.
BISANCE involved thermal calculation, FEM analysis, and icing wind tunnel qualification of heat management systems embedded in composite nacelle and engine air intake structures.
JOIN-EM's copper-aluminium joining is directly relevant to busbars, heat sinks, and electrical connectors — components where thermal conductivity and weldability of mixed metals are critical.
In their first H2020 project (2015–2018), CALYOS was focused on solid-state metal joining — specifically magnetic pulse welding to bond copper and aluminium, with applications in electrical components and heat exchange hardware. By their second project (2019–2023), the focus had moved decisively into fluid-based thermal management: biphasic systems, capillary loops, and the integration of these technologies into aerospace composite structures. The thread connecting both periods is thermal management — first through material joining for thermal conductors, then through active two-phase heat transport systems — suggesting a deliberate deepening of their thermal engineering identity.
CALYOS appears to be moving toward specialized thermal management systems for high-performance environments (aerospace, composite structures), making them a relevant partner for projects involving heat dissipation in weight-constrained or harsh-environment applications.
CALYOS has participated exclusively as a consortium partner — never as project coordinator — across both of their H2020 projects, indicating they contribute specific technical expertise rather than leading project management. Despite only two projects, they engaged with 16 unique partners across 6 countries, suggesting involvement in mid-to-large consortia where their niche capabilities (two-phase cooling, magnetic pulse welding) are sought by system integrators or OEMs. Working with them likely means engaging a focused technical specialist rather than a broad research organization.
CALYOS built a network of 16 unique partners across 6 countries through just 2 projects, suggesting each consortium was substantial in size. Their partnerships span manufacturing and aerospace sectors, reflecting the dual nature of their technical portfolio.
CALYOS occupies a rare intersection: a small company with demonstrable expertise in both solid-state metal joining (electromagnetic/magnetic pulse welding) and two-phase thermal management (capillary loops, biphasic systems) — two competencies that rarely coexist in one SME. Their involvement in BISANCE, a Clean Sky Joint Technology Initiative project targeting composite aerospace nacelles, shows they can meet aerospace-grade qualification standards, which is a significant barrier to entry. For consortium builders in aerospace, electric mobility, or high-power electronics, CALYOS offers a specialist who can handle both the materials interface challenge and the thermal transport challenge in the same package.
