ASTM E Standard Practice for Microetching Metals and Alloys – Download as PDF File .pdf), Text File .txt) or read online. Buy ASTM E PRACTICE FOR MICROETCHING METALS AND ALLOYS from SAI Global. Designation: E − 07´1. Standard Practice for. Microetching Metals and Alloys1 This standard is issued under the fixed designation E; the number.
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This is imperative with etchants that give off noxious odors or toxic vapors that may accumulate or become explosive. If the chemical is not listed or if chemical mixtures are being used, contact the glove manufacturer for a recommendation.
Significance and Use 5. Summary of Practice 4. We are a non-profit group that run this website to share documents.
Stop the evaporation when the color is purple to violet, although in some cases, thinner films with green or red colors have produced good results. This problem is very common when the specimen or mounting media contain porosity and when the mounting material such as Bakelite does not bond tightly to the specimen resulting in seepage along the edges of the specimen.
This standard has been approved for use by agencies of the Department of Defense. Some of these etchants will not work at all if water is not present.
Pure Be Be alloys Chromium Base: In all cases, extreme care should be taken to remove all traces of the etchant by thorough washing and complete drying of the specimen before placing asttm on the microscope stage. Additional information can be obtained at the EPA website3.
A number in parentheses indicates the year of last reapproval. Metal Etchants Uses Pure Al 1a, 2, 3 4, 5 1b general structure grain satm under polarized light grain boundaries and slip lines series 1a, 3, 2 4, 5 asm, 7 general structure grain structure under polarized light phase identifications series 3, 2, 1a 8a, 6, 7 general structure phase identifications series 3, 1a 4, 5 8a, 6, 7 general structure grain structure under polarized light phase identifications series 3, 1a general structure series 3, 1a, 2, 6, 8a 4, 5 general structure grain structure under polarized light series 3, 1a, 2, 6, 8a, 4, 5 1a, 2, 7, 6, 8a general structure grain r407 under polarized light phase identifications series 3, 1a, 2 4, 5 3b, 6 general structure grain structure under polarized light phase identifications 9, 10 11 general structure via polarized light general structure Aluminum Base: All persons using any etchants should be thoroughly familiar with all of the chemicals involved and the proper procedure for handling, mixing, and disposing of each chemical, as well as any combinations of those chemicals.
Size px x x x x We need your help! Storage of fuming etchants in sealed or non-vented containers may create an explosion hazard. Please copy and paste this embed script to where you want to embed Embed Script.
It should be purchased in small quantities suitable for use in six to twelve months and checked periodically for lack of hydration.
ASTM E – 07()e1 Standard Practice for Microetching Metals and Alloys
Animal studies have shown chromium VI to cause lung tumors via inhalation exposure. See Guide E on Metallographic Laboratory Safety for additional information on safety precautions for electrolytes containing perchloric acid.
Buying HF at the lowest useable concentration will significantly reduce risk. Pure Co Hard-facing and tool metals High-temperature asmt 14, 15, 16, 17 18, 19, 20 20, 18, 16, 21, 22b, 24, 25 19 general structure general structure general structure phase identification 26, 27, 28, 29, 30, 31d, 32, 33, 34b, 0, 36, 37, 38, 39, 40, 41, 42, 8b,43, 28 general structure Columbium Base see niobium base Copper Base: Where ethanol or methanol, or both are listed as alternates, ethanol is the preferred solvent.
Methanol should be used in a properly designed chemical fume hood.
ASTM E407-07 Standard Practice for Microetching Metals and Alloys
A light pre-etch, or a slight amount of polishing relief, may lead to sharper delination of the constituents after vapor deposition. Use a polyethylene beaker to contain the etchant if it contains astmm ions for example, ashm containing ammonium bifluoride, NH4 FHF. The etchant composition and procedure is then located in Table 2corresponding to the etchant number.
A vacuum level of 1. A e4077 of useful books on this subject is given in Refs. Last previous edition approved in as E—99 DOI: An extremely high quality polish is required as tint etchants will reveal remaining polishing damage even if it is not visible with bright field illumination.
It will also react with alkaline materials including plaster and concrete to form explosive compounds. Users should be aware of the type of hazards involved in the use of all chemicals used, including those hazards that are immediate, long-term, visible, invisible, and with d407 without odors.
Distilled water may be added to maintain hydration, It must only be stored in plastic or glass bottles with nonmetallic lids. It is recommended that any bottle of picric acid that appears dry or is of unknown vintage not be opened and that proper emergency personnel be notified.
Care must be taken to keep it moist because dry picric xstm is shock sensitive and highly explosive especially when it is combined with metals such as copper, lead, zinc, and iron.
ASTM E Standard Practice for Microetching Metals and Alloys – Free Download PDF
Unless otherwise indicated, it is intended that all reagents 3 http: We need your help to maintenance this website. Please fill this form, we will try to respond as soon as asrm. NOTE 2—Electrolytic etchants are italicized. This includes being familiar with the federal, state, and local ee407 governing the handling, storage, and disposal of these chemical etchants. The ast, is placed in the solution using tongs, polished face up.
Thank you for interesting in our services. Therefore, a glove must be carefully selected and used to ensure that it will provide the needed protection for the specific etchant being used. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.