NIBSORB is a process for coating absorber elements that was developed by the MTV Metallveredlung as part of an order and with the assistance of the Gesellschaft für Nuklear-Service mbH (GNS). Neutron absorbing coatings are produced via electrolytic deposition of neutron-capturing, boron-containing solid particles within a ductile nickel matrix. These coatings can be deposited on carrier materials of any geometry, enabling the production of absorber elements that need to meet specific requirements.

NIBSORB consists of an extremely pure and compressively stressed nickel dispersion layer, which can be applied in an unlimited coating thickness. The solid particles have a mean grain size of approx. 1 µm and are deposited within the matrix at high concentration and homogeneity.