The protection and the preservation of the objects of cultural heritage (archaeological, museum, monuments, statuary, ...) is a major societal issue. They undergo changes due to the interactions with the environment. This is particularly the case of metals (iron - steel, brass - bronze, lead, etc) which corrode. This alteration can take place from their relinquishment but also during their exposure to the public. The implementation of effective treatments for restoration and protection is then crucial. Yet, these cannot be mere transposition of solutions used in the anticorrosion treatment industry. Indeed, specific requirements exist for heritage preservation as conservation of the appearance of objects when treated, and reversibility of applied coatings. In addition these systems have long term physicochemical specificities (heterogeneity, reactivity, ...). Thus, both restorative treatments and protective coatings, appeal adapted research involving multiscale characterization techniques and representative testing conditions. The company A-Corros specializes in the implementation and development of these treatments. It has developed a unique prototype for dechlorination in Europe, essential step for the treatment of the archaeological metals in subcritical conditions. Once operational, this protocol will reduce by several orders of magnitude the duration of treatment, with major economic consequences for the restoration of archaeological metal objects. Before passing in a commercial exploitation phase, the new process, however, requires extensive research on the evolution of the structure and texture of the corrosion products during the treatment to ensure its reproducibility and reliability. Moreover, A-Corros, as all the actors of the cultural heritage, uses a number of protective coatings on objects of large dimensions exposed, especially outdoors. These treatments currently based on the use of microcrystalline waxes or corrosion inhibitors are of limited effectiveness in time. Thus, R & D work would be crucial in this domain to understand the action mechanisms of these compounds and optimize their function of neutralising the reactive areas within the porous corrosion products, while meeting the criteria of cultural heritage. The LAPA (Laboratory of Archeomaterials and long term Prediction) of the NIMBE unit develops for fifteen years fundamental research on long-term corrosion of metals. Its research interests include archaeological objects and preservation treatments. They are based on techniques of fine characterization of the nano to the micrometer (Raman, µXRD, FESEM, TEM, XAS, STXM under synchrotron) and on recorrosion experiments of ancient objects in original experimental setups in media marked with isotopes, to identify the processes involved. The NIMBE also masters the surface coatings synthesis processes and approaches to nanoscale materials. The Labcom LETRIP (Laboratory for the Study and Development of Innovative Treatments and Heritage Coatings) aims to combine the skills of A-Corros in conservation / restoration and their experimental prototypes with the fundamental research of LAPA to produce R & D on both axes mentioned above. Their complementarity already experienced around a project of PhD-thesis will allow to optimize quickly the subcritical treatment of the ferrous metals. This latter can be marketed with specific services adapted to the particular needs for ancient objects. This increase of activity will then allow to approach researches with longer term (subcritic on other metals and new protection coatings).