This International Standard specifies the method for high temperature corrosion testing of metallic materials by embedding in a corrosive powder made up of salt, ash, and\/or other solids and exposing them to high temperature in a controlled gas environment to evaluate their corrosion resistance.<\/p>\n
Two options exist: fully embedding and partially embedding.<\/p>\n
Fully embedding is used in cases in which a mass change measurement is required.<\/p>\n
Partially embedding is used to investigate three potentially different interaction zones on a single test piece, i.e. the embedded part, the non-embedded part, and the gas\/powder interface region. Therefore, gravimetric measurements are not appropriate and metallographic investigations are necessary instead.<\/p>\n
This International Standard does not cover methods where test pieces are immersed in a liquid or cases in which a surface deposit is applied to the test pieces. These methods are covered in ISO 17245 and ISO 17224, respectively.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1\tScope 2\tNormative references <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3\tTerms and definitions 4\tTest method 4.1\tPrinciple 4.2\tReagents and materials 4.2.1\tTest pieces <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.2.2\tCorrosive powder 4.3\tTest apparatus 4.3.1\tDesign of apparatus <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3.2\tTemperature monitoring <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.3.3\tGas supply 4.4\tProcedure 4.4.1\tPreparation and placement of the test piece <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.4.2\tTest environment 4.4.3\tHeating method 4.4.4\tTest duration <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.4.5\tCooling of test pieces 4.4.6\tDiscontinuous testing 4.5\tDetermination of mass change 4.5.1\tPrinciple 4.5.2\tMeasurements prior to testing 4.5.3\tDescaling prior to mass determination <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.5.4\tMeasurement of corrosion mass loss 5\tExamination of surface and microstructure of corroded test pieces 6\tReport 6.1\tMatters to be described 6.1.1\tTest material <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 6.1.2\tTest piece 6.1.3\tTesting environments 6.1.4\tTest results <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 6.2\tSupplementary note <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex\u00a0A (informative) Chemical and electrolytic procedures for removal of corrosion products from fully embedded test pieces <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Corrosion of metals and alloys. Test method for high temperature corrosion testing of metallic materials by embedding in salt, ash, or other solids<\/b><\/p>\n |