The paper presents an original method for open-type ionizing radiation source (IRS) fabrication by the means of spark plasma sintering-reactive synthesis (SPS-RS) of SrTiO3 ceramics as an active zone component reinforced by the titanium alloy framework produced by additive technology. Rapid heating regimes of SPS-RS are described with the focus on fabrication of perovskite-phase SrTiO3 crystalline ceramics integrated within the reinforcing Ti–Al–V framework yielding defect- and pore-free monolith. The product is characterized by the excellent crack resistance, Vickers microhardness (480–554 HV), and hydrolytic stability (leaching rate as low as 10−5 g/cm2·day). Presented results show bright prospects for high-tech radioisotope production in the form of open-type IRS meeting the requirements of international standards.

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