Abstract:In this work, a series of mono-and multilayer coatings were considered. They consisted of CrN and Cr prepared by physical vapor deposition with a cathodic arc. The most common steels for molds of plastics were chosen as substrates: X37CrMoV5-1 (SMV3), X2NiCoMo18-8-5 (MARVAL M1), X105CrCoMo18-2 (N690) and X40CrMo15 (X13T6). The samples were made with surface state conditions reproducing the main finishes required for molding of plastics: mirror, electro-eroded, sandblasted and ground finish. The coatings were characterized morphologically and chemically. The corrosion behavior of bare and coated steels was evaluated by electrochemical methods.

Corrosion and wear resistance of Cathodic Arc Evaporation (CAE) CrN coatings deposited on a tool steel were investigated considering the effect of the number of layers (mono or double) and the influence of defects. The CrN coatings were characterized for mechanical (scratch, nanoindentation test), corrosion behavior (polarizarion tests) and tribological properties (pin-on-disk tests). Scanning Electron Microscope analyses on samples before and after the tests were also made in order to identify the type of the defects and the role they play in the coating damage. Monolayer coating shows a good wear behavior with a stable and low friction coefficient, but its corrosion performance is poor. On the contrary, the presence of an interface into the double layer improves the corrosion resistance, but it is a weak point for the coating delamination during wear tests.

TALKING CONTEMPORARY CURATING, TERRY SMITH New York: Independent Curators International (2015), 344 pp., Paperback, ISBN: 978-0-91636-590-5, US $19.95 CURATORIAL DREAMS: CRITICS IMAGINE EXHIBITIONS, SHELLEY RUTH BUTLER AND ERICA LEHRER (EDS) Montreal and Kingston: McGill-Queens University Press (2016), 386 pp., Paperback, ISBN: 978-0-77354-683-7, $39.95 CULTURES OF INTERNATIONAL EXHIBITIONS 1840–1940: GREAT EXHIBITIONS IN THE MARGINS, MARTA FILIPOVÁ (ED.) Farnham, Surrey: Ashgate (2015), 358 pp., Hardcover, ISBN: 978-1-47243-281-0, £75.00 CITIES, MUSEUMS AND SOFT POWER, GAIL DEXTER LORD AND NGAIRE BLANKENBERG Washington, DC: American Alliance of Museums Press (2015), 264 pp., Paperback, ISBN: 978-1-94196-303-6, US $29.95