Marine corrosion tests of electroplates for ship instruments. X. Silver coatings on brass parts

Atmospheric corrosion of metals in regions of cold and extremely cold climate (a review)

“…The rate of steel corrosion at the Mirnyi station is comparable with (and that of copper even exceeds) that observed on the Aion Island and Apapel'khino Peninsula (Far East), where the Cl -concentrations amounted to 33.8 ad 20.1 mg/(m 2 day) and the TOW exceeds 1000 h/year [4,26] (the Far-East data were obtained using the dry-fabric method and recalculated to the wet-candle values [25,28]). However, if the TOW would be determined for T > -4 ° C, the corresponding value for the tests at Mirnyi would increase by a factor of more than 7 to reach 987 h/year (in the test period) [5].…”

“…The effect of the first three factors can be taken into account using a generalized characteristic called the temperature-humidity complex (THC), which is defined as the duration of exposure to a certain combination of air humidity and temperature. Data on the THC and related corrosion rates in the regions of corrosion testing arte of considerable practical interest [25][26][27]. Based on an analysis of the results of many- Table 1.…”

“…Based on an analysis of the results of many- Table 1. Monthly average temperature ( T , ° C), relative humidity ( RH , %), and wind velocity ( V , m/s) at some representative sites of Antarctic coast [5] and Scott Base station [11] year measurements of the temperature and relative humidity of air at 3053 weather stations on the territory of the former USSR, we have previously systematized THC data for various climate regions ranging from very cold to very hot (according to GOST [29]) and for the coastal regions of Arctic Ocean, Pacific Ocean, and Okhotsk Sea [26].…”

“…The corrosivity of atmosphere in non-industrial coastal regions is determined not only by the TOW, but it also depends on the concentration of marine aerosols-in particular, chlorides deposited from air onto the metal surface [23][24][25][26][27]. The rate of steel corrosion at the Mirnyi station is comparable with (and that of copper even exceeds) that observed on the Aion Island and Apapel'khino Peninsula (Far East), where the Cl -concentrations amounted to 33.8 ad 20.1 mg/(m 2 day) and the TOW exceeds 1000 h/year [4,26] (the Far-East data were obtained using the dry-fabric method and recalculated to the wet-candle values [25,28]).…”

Corrosion resistance of zinc–aluminum and zinc–aluminum–magnesium coatings in various regions of the world

“…В последние десятилетия было проведено множество международных [11][12][13][14][15][16] и российских исследований для сбора данных об атмосферной коррозии типовых конструкционных металлов, таких как малоуглеродистая сталь, цинк, медь и алюминий. По этим данным разработаны предиктивные модели коррозионных потерь за различные промежутки времени, что позволяет оценивать сроки службы металлических конструкций в атмосферных условиях, и представлена классификация коррозионной агрессивности атмосферы по отношению к конструкционным металлам [17].…”