Coated specimens subjected to corrosive

Standard method for evaluation of painted or coated specimens subjected to corrosive environments Standard test method of salt spray (FOG) testing... 

D 1654 Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments... 

Method for evaluation of painted or coated specimens subjected to corrosive environments. 

Painted or Coated Specimens Subjected to Corrosive Environments... 

Electrodeposited chromium coatings. Electrolytic corrosion testing Coatings cathodic to the substrate-rating of electroplated test specimens subjected to corrosion tests... 

Metallic Coating—Coatings Cathodic to the Substrate—Rating of Electroplated Test Specimen Subjected to Corrosion Tests Metallic and Other Non-organic Coatings—General Rules for Stationary Outdoor Exposure Corrosion Tests... 

ISO 4540 1980, Metallic Coatings—Coatings Cathodic to the Substrate—Rating of Electroplated Test Specimens Subjected to Corrosion Tests, International Organization of Standardization, Geneva, Switzerland. 

The ASTM standard methods for evaluation of specimens subjected to accelerated tests are summarized in Table 13.7. The performance rating depends on subjective visual observation made by the operator. Also, high corrosion resistant coatings show no visual signs of deterioration after weathering. 

Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates—Rating of test specimens and manufactured articles subjected to corrosion tests... 

To counteract the high corrosion rate of Mg alloy implants electrochemically deposited coatings of fluorine-doped hydroxyapatite (FHAp) and brushite (DCPD) were developed by Bakhsheshi-Rad et al. (2014). As shown in Table 5.2 potentiodynamic polarisation measurements of uncoated and coated Mg-Ca alloys subjected to electrochemical corrosion in Kokubo s SBF (Table 7.8) confirmed the corrosion-resistant nature of the coatings. The anodic polarisation curve of the uncoated specimen shows a breakdown immediately after the... 

The most widely used simulated service test for static atmospheric testing is described in ASTM G 50, Practice for Conducting Atmospheric Corrosion Tests on Metals. It is used to test coated sheet steels for a variety of outdoor applications. Test materials, which are in the form of flat test panels mounted in a test rack (Fig. 16), are subjected to the cyclic effects of the weather, geographical influences, and bacteriological factors that cannot be realistically duplicated in the laboratory. Test durations can last from several months up to many years. Some zinc-coated steel specimens have undergone testing for more than 30 years. 

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