1964 Exposure Test of Porcelain Enamels on Aluminum: Three Year InspectionU.S. National Bureau of Standards, 1970 - 11 pages An exposure test of porcelain enamels on aluminum was initiated by the National Bureau of Standards and the Porcelain Enamel Institute in 1964.The enamels were returned from the exposure sites to the laboratory at NBS to be measured for changes in gloss and col * or after exposures of six months, one year, and three years.Changes were found to be greatest at Kure Beach and least at Montreal and Los Angeles, with moderate changes occurring at Washington and New York.Although the boiling citric acid test is used as an acceptance test for these enamels, the correlation with color change, particularly at Kure Beach, was not as good as expected.A cupric chloride test was developed which shows an improvement in this correlation.(Author). |
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Page 1
... obtain more uniform specimens than could be obtained by spraying and firing small individual metal blanks . Also , the speci mens thus obtained would more closely simulate actual production enamels than small individually prepared ...
... obtain more uniform specimens than could be obtained by spraying and firing small individual metal blanks . Also , the speci mens thus obtained would more closely simulate actual production enamels than small individually prepared ...
Page 3
... obtain the maximum efficiency possible with this type of instrument . The color change was calculated [ 7 ] from the ... obtained from the six - months ' , one - year's and three - years ' inspections of these enamels are presented in ...
... obtain the maximum efficiency possible with this type of instrument . The color change was calculated [ 7 ] from the ... obtained from the six - months ' , one - year's and three - years ' inspections of these enamels are presented in ...
Page 10
... obtained for the boiling acid solubility as indicated by the smaller residual standard deviations ( see table 7 ) for the fits of the least squares lines . Although the correlation between the color re- tention and the results of the ...
... obtained for the boiling acid solubility as indicated by the smaller residual standard deviations ( see table 7 ) for the fits of the least squares lines . Although the correlation between the color re- tention and the results of the ...
Common terms and phrases
1964 Exposure Test 25 cents accordance with ASTM acid resistance acid solubility test acid spot test AG-C Angeles Montreal ASTM Book ASTM designation E-376 automatic data processing Average color retention boiling acid solubility boiling cupric chloride Book of Standards Building Science Series Bureau of Standards change in NBS citric acid spot color change color-retention data correlation between color cupric chloride test Eddy Current enamel colors Enamel Kure Beach enamel systems enamels exposed enamels included enamels on aluminum exposed at Kure gloss and color gloss range high gloss enamels initial gloss Interrelations Between Cement Kure Beach Washington low gloss enamels Medium minus the color Montreal Los Angeles National Bureau nature-tone enamels NBS units percentage gloss retained porcelain enamels Portland Cement Resistance of Porcelain RETENTION AFTER 3-YEARS retention is 100 retention of porcelain sign test Spalling specimens specular gloss spot test ratings Test of Porcelain Washington New York Weather Resistance York Montreal