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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If the asstm is not listed or if chemical mixtures are being used, contact the glove manufacturer for a recommendation.
It may be helpful to place the specimen on a small piece of white paper. Buying HF at the lowest useable concentration will significantly reduce risk. It should be purchased in small quantities suitable for use in six to atm months and checked periodically for lack of hydration. Observe printed cautions on reagent bottles. A number of etchants generate fumes or vapors and should only be stored in properly vented containers.
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ASTM E Standard Practice for Microetching Metals and Alloys_百度文库
Pure Astmm Be alloys Chromium Base: The etchant composition and procedure is then located in Table 2corresponding to the etchant number. NOTE 2—Electrolytic etchants are italicized.
Thank you for interesting in our services. Unless otherwise indicated, it is intended astk all reagents 3 http: Safety precautions and miscellaneous information are also included.
This standard has been approved for use by agencies of the Department of Defense. Other grades, such as United States Pharmacopeia USPmay be used, provided it is first ascertained that the reagent is of sufficiently high purity to permit its use without detrimental effect. Experience has shown that the quality of tap water varies significantly and can adversely affect some etchants.
ASTM E407-07 Standard Practice for Microetching Metals and Alloys
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. Where ethanol or methanol, or both are listed as alternates, ethanol is the preferred solvent. Please fill this form, we will try to respond as soon as possible. The specimen is placed in the solution using tongs, polished face up.
If dried particles are noted on or near the lid, submerge the bottle in water to re-hydrate them before opening. After coloration begins, allow the solution to settle and remain motionless.
Size px x x x x Specific alloys are listed only when necessary. Significance and Use 5. 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.
Remove the specimen from the etchant when the surface is colored violet, rinse and dry. If that does not provide enough detailed information, contact the chemical manufacturer directly. Solutions are listed to highlight phases present in most major alloy systems.
Some of these etchants will not work at all if water is not present.
Pure Co Hard-facing and tool metals High-temperature alloys 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, 35, 36, 37, 38, 39, 40, 41, 42, 8b,43, 28 general structure Columbium Base see niobium base Copper Base: Current edition approved May 1, astj 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.
Metal Etchants Uses Pure Al 1a, 2, 3 e047, 5 1b general structure grain structure under polarized light grain boundaries and slip lines series 1a, 3, 2 4, 5 6, 7 general structure grain structure under polarized light phase identifications series 3, 2, 1a 8a, 6, 7 general structure phase identifications series aastm, 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 structure under polarized light phase identifications series 3, 1a, 2 4, 5 asstm, 6 general structure grain structure under polarized light phase identifications 9, 10 11 general structure via polarized light general structure Aluminum Base: In all cases, extreme care should be taken to remove all traces of the etchant by thorough washing and complete drying of the asfm before placing it on the microscope stage.
Standard practice for microetching metals and alloys – CERN Document Server
Therefore, a glove must be aastm selected and used to ensure that it will provide the needed protection for the specific etchant being used.
Please copy and paste this embed script to where you want to embed Embed Script. For specific cautionary statements, see 6.
Methanol should be used in a properly designed chemical fume hood.