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sample cleaning

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110402
EISBN: 978-1-62708-247-1
..., and cleaving. The article also provides information on options for mounting, handling, and cleaning of samples during and after the cleaving process. The general procedures, tools required, and considerations that need to be taken into account to perform these techniques are considered. cleaving cross...
Image
Published: 01 November 2019
Fig. 13 Cleaning up Au smear. Left image shows the smear. Right image shows smear cleaned up. Red arrows show direction of wheel rotation with respect to sample surface. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030023
EISBN: 978-1-62708-349-2
.... Before mounting the specimens, it is necessary to thoroughly clean the samples to remove any particulates from the cutting or sectioning process. Also, at this point, any greases or oils (e.g., kerosene from cutting) that may have come in contact with the specimens must be removed. If not adequately...
Image
Published: 01 August 2018
Fig. 6.9 Sample removal and thinning using FIB. In a sample where the microstructure was revealed by FIB sputtering/cleaning of the surface, the location of the thin sample to be removed is selected and an ion beam–assisted platinum deposition is done on location (a). A trench is dug on each More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040030
EISBN: 978-1-62708-428-4
..., a minimum of 2 mm thick substrate is suggested. Before insertion into the cold mounting cups or placing on hot mount stage, the sectioned samples should be cleaned with an appropriate cleaning agent; for water insensitive materials, an effective method is cleaning with soap and water using cotton swabs...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220039
EISBN: 978-1-62708-259-4
.... 4.1.2 Surface Preparation Achieving a proper surface for the macrographic examination comprises two steps: cutting and grinding. Sometimes a sample requires cleaning before its preparation (to remove oxidation, etc.). If the underlying surface is of interest (e.g., fracture surfaces), cleaning...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900053
EISBN: 978-1-62708-350-8
... that the equipment used in the sampling be thoroughly clean and that the salt sample taken from the bath also be clean and free of contaminants such as sludge or graphite, which could be on the molten salt surface. Materials and Equipment The following is a list of materials and equipment required...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110391
EISBN: 978-1-62708-247-1
... size, unlike alumina whose particles are block-shaped. Co-silica turns into a glass-like substance when it dries on surfaces and cannot be re-dissolved. Do not let it dry on surfaces, such as microscope stages or samples. Sample surfaces should be cleaned with soapy water before drying. Due to its...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... defects, forming and welding defects, design defects, improper cleaning methods, and ineffective maintenance. It also includes case studies and illustrations. boiler tubes chemical cleaning design defects forming defects material defects quality control welding defects Failures Attributed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030067
EISBN: 978-1-62708-349-2
... exceeds the distance of the first cut. This will provide an opening in the honeycomb for impregnation with the mounting resin ( Fig. 4.1 ). When the cuts have been made, the sample must be cleaned and dried before it is placed in the cavity mold. The sample can then be impregnated under vacuum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040101
EISBN: 978-1-62708-428-4
..., and it should support samples at a position of 30 degrees to vertical. The horizontal groove in the middle of the fixture shown in Fig. 3 protects it from contact with excessive glue during the curing process. Work in a Clean and Controlled Environment Protect samples from contamination. Do not touch...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400087
EISBN: 978-1-62708-258-7
.... It all began with Henry Clifton Sorby on July 28, 1863. Sorby, whose photograph can be seen in Fig. 4.1 , was an English geologist, petrographer, and mineralogist who was the first person to examine polished and chemically etched metal samples under the microscope. His samples included Swedish wrought...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900167
EISBN: 978-1-62708-350-8
.... If the bearings become tight, then the force required to depress the abrasive wheel could lead to an excessive load being placed on the sample being sectioned, creating the potential for localized overheating of the sample surface. Vapor Degreasing Vapor degreasing is often used to clean the specimen after...
Image
Published: 01 August 2018
ethanol. Keep reactants at 0 °C (32 °F). After ultrasonic cleaning on the sample, perform a short time etching (≅ 30 s) with 2% nital to develop grain boundaries. Mix approx. 60% Part I and 40% Part II. Etch for ≅ 30–40 s. Stop etching with ethanol. Bainite appears dark, ferrite tan, and martensite white More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220069
EISBN: 978-1-62708-259-4
... if the sample surface is not properly protected after polishing and cleaning. Fig. 5.5 Properly polished steel sample, not etched. Many globular nonmetallic inclusions are visible. Fig. 5.6 Poorly polished sample. Many scratches from grinding or from previous polishing steps are visible...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030043
EISBN: 978-1-62708-349-2
... steps, it is necessary to thoroughly clean the samples between each polishing step so there are no residual abrasive particles that can be transferred to the next step. If this occurs, it can cause all following samples to contain scratches, because the larger particles from the previous step...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780383
EISBN: 978-1-62708-281-5
... on good samples. In these cases, data from the failed area should be compared to reference materials to infer what should or should not be present. Reference materials can include starting substrate materials (before and after cleaning processes); pure compounds and coatings used in the manufacturing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430107
EISBN: 978-1-62708-253-2
... comparison of the grain structure of a sample under investigation with a series of graded images, either in the form of a wall chart or an eyepiece reticle. The grain size of an etched sample is compared with the appropriate comparison chart at the same magnification, and the grain size number corresponding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850060
EISBN: 978-1-62708-260-0
..., it is often necessary to clean samples. Cleaning may also be needed prior to plating for edge retention. With certain samples, for example, those in which surface oxide layers are to be examined, cleaning must be limited to very simple treatments or the detail to be examined may be lost. A distinction can...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900245
EISBN: 978-1-62708-350-8
..., thus giving a false hardness reading. For a nitrided case depth from 0.5 to 1.0 mm (0.020 to 0.040 in.), it is acceptable to use the Vickers hardness test system with a light load up to 10 kg ( Fig. 1 ). Fig. 1 Vickers hardness testing machine The sample surface should be clean and free...