ISO 28706-4:2016
Vitreous and porcelain enamels — Determination of resistance to chemical corrosion — Part 4: Determination of resistance to chemical corrosion by alkaline liquids using a cylindrical vessel
ISO 28706-4:2016 describes a test method for the determination of the resistance of vitreous and porcelain enamelled articles to attack by alkaline liquids at temperatures between 25 °C and 95 °C. The apparatus used is a cylindrical vessel in which only one enamelled specimen is tested.
NOTE 1 The test method was initially set up for determination of the resistance of vitreous and porcelain enamels to a hot sodium hydroxide solution. Within the scope of this part of ISO 28706, the resistance of other alkaline liquids can be tested.
NOTE 2 This part of ISO 28706, which uses a cylindrical vessel, is generally used for tests carried out on vitreous and porcelain enamel coatings for the chemical industry.
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Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus and material
6 Test specimens
7 Procedure
8 Expression of results
8.1 Total loss in mass per unit area
8.2 Corrosion rate
9 Hot 0,1 mol/l sodium hydroxide test
9.1 General
9.2 Test solution, c(NaOH) = 0,1 mol/l
9.3 Test temperature
9.4 Duration of the test
9.5 Test report
10 Hot 1,0 mol/l sodium hydroxide test
10.1 General
10.2 Test solution, c(NaOH) = 1,0 mol/l
10.3 Test temperature
10.4 Duration of the test
10.5 Test report
11 Other test solutions
11.1 General
11.2 Test solution
11.3 Test temperature
11.4 Duration of the test
11.5 Test report
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus and material
6 Test specimens
7 Procedure
8 Expression of results
8.1 Total loss in mass per unit area
8.2 Corrosion rate
9 Hot 0,1 mol/l sodium hydroxide test
9.1 General
9.2 Test solution, c(NaOH) = 0,1 mol/l
9.3 Test temperature
9.4 Duration of the test
9.5 Test report
10 Hot 1,0 mol/l sodium hydroxide test
10.1 General
10.2 Test solution, c(NaOH) = 1,0 mol/l
10.3 Test temperature
10.4 Duration of the test
10.5 Test report
11 Other test solutions
11.1 General
11.2 Test solution
11.3 Test temperature
11.4 Duration of the test
11.5 Test report
Bibliography