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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The specimen is placed in the solution using tongs, polished face up.
ASTM E407-07 Standard Practice for Microetching Metals and Alloys
A number in parentheses indicates the year of last reapproval. Information describing the appropriate glove may be obtained by consulting the MSDS for the chemical being used. Summary of Practice 4.
After coloration begins, allow the solution to settle and remain motionless.
Care must be taken to keep it moist because dry picric acid is shock sensitive and highly explosive especially when it is combined with metals such as copper, lead, zinc, and iron.
One or several small lumps of a suitable dielectric compound with the desired index of refraction is heated under a vacuum until it evaporates.
Standard practice for microetching metals and alloys – CERN Document Server
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. Observe printed cautions on reagent bottles. Metal Etchants Uses Pure Al 1a, 2, 3 4, 5 1b general structure asrm 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, asm, 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 structure under polarized light phase identifications series 3, 1a, 2 4, 5 3b, 6 general structure grain structure under polarized light 007 identifications 9, 10 11 general structure via polarized light general structure Aluminum Base: Safety precautions and miscellaneous information are also included.
Where ethanol or methanol, or both are listed as alternates, s407 is the preferred solvent. Remove the specimen from the etchant when the surface is colored violet, rinse and dry.
Current edition approved May 1, Use a polyethylene beaker to contain the etchant if it contains fluorine ions for example, etchants containing ammonium bifluoride, NH4 FHF. NOTE 2—Electrolytic etchants are italicized. 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 or without odors.
Stop the evaporation when the color is asttm to violet, although in some cases, thinner films with green or red colors have produced good results.
ASTM E Standard Practice for Microetching Metals and Alloys_百度文库
Alloys are listed as a group or series when one or more etchants are common to the group or series. A vacuum level of 1. 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. We need your help to maintenance this website. Therefore, a glove must be carefully selected and used to ensure that it will provide the needed protection for the specific e4007 being used.
Additionally, one can contact the glove manufacturer or, if available, consult the manufacturers glove chart. Please copy and paste this embed script to where you want to embed Embed Script. Unless otherwise indicated, it is intended that all reagents 3 http: After polishing, the surface must be carefully cleaned.
The deposition is conducted inside a vacuum evaporator of the type used to prepare replicas for electron microscopy. In particular, note that solutions containing perchloric acid must be used in an exclusive hood equipped with a wash down feature to avoid accumulation of explosive perchlorates.
If dried particles are noted on or near the 007, submerge the bottle in water to re-hydrate them before opening. 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, 0, 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: This problem is very common when the specimen or mounting media contain porosity and when the mounting wstm 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.
Buying HF at the lowest useable concentration will significantly reduce risk. Precision and Bias 8.