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The ASME AS-240TP-316L stainless steel in the form of a sheet 3 mm in thickness and the ASTM SA-516 grade 60N steel substrate are joined by explosion cladding. The objective of this paper is to evaluate the electrochemical behaviour of a cladding plate of carbon-manganese steel and stainless steel 316L when compared to non-cladding plate 316L steel. The effect of the cladding process on the corrosion resistance was evaluated in a medium of aqueous solution of sulphuric acid. Anodic potentiodynamic polarisation curves were obtained to study the passivation behaviour of the cladding plate. Electrochemical impedance spectroscopy was performed to elucidate the corrosion mechanism of the cladding plate. The non-cladding ASME AS-240 TP-316L steel showed a higher corrosion potential, a lower passivation current density and a higher polarisation resistance, exhibiting a higher corrosion resistance than cladding 316L steel.

The Atlantic Forest is the largest biome in the State of São Paulo, one of the most biodiverse ecosystems complexes on the planet, considered a conservation hotspot. This work aimed to list the plant species through the classification of the life forms of RAUNKIAER (1905), improved by CABRERA & WILLINK (1973). The survey of the species was carried out by prospecting’s in 54 quadratic plots of 36 m2, evenly distributed in a forest fragment of 48,010.91 m2. There recorded 97 species distributed in 47 families, with predominance Myrtaceae. The survey was carried out in December 2017, of the total number of species collected in the area of the fragment: 63 are trees, 17 are herbaceous, 6 are epiphytic, 4 are lianas, 3 are shrubs, 2 are palm trees, one is arborescent and one scandent. It is worth noting the registration of the vulnerable species Euterpe edulis, all botanical material is in the Herbarium RBR - UFRRJ - Institute of Biological and Health Sciences.

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