Application of cryogenic fracturing to the study of the cross-sectional structures of surface layers on metals

Butler, W. O.; Dawson, I.J.

doi:10.1016/0047-7206(76)90054-6

Cited by 2 publications

(3 citation statements)

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“…Following the method originally described by Butler and Dawson (1976), a rectangular section approximately 1 cm x 2 cm was sawn from coupons of each anodised aluminium alloy.…”

Section: Methods 2: Cryogenic Fracturingmentioning

confidence: 99%

“…In this study, samples were immersed for 10 minutes, removed and then snapped sharply according to the method described in the literature (Butler and Dawson, 1976). It may be that the time of immersion was too long for the alloys used here and that less time would reduce the damage to the coating.…”

Section: Cross-section View Sample Preparationmentioning

confidence: 99%

“…Mounting a snapped sample correctly allows the coating to be viewed perpendicularly. Butler and Dawson (1976) described a method for cryogenically fracturing samples. By immersing in liquid nitrogen prior to snapping, the sample was sufficiently embrittled to allow the sample be easily snapped.…”

Section: Cross-section View Sample Preparationmentioning

confidence: 99%

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Sample preparation of anodised aluminium oxide coatings for scanning electron microscopy

Long

Borissova

Wilson³

et al. 2017

Micron

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Sample preparation of anodised aluminium oxide coatings for scanning electron microscopy.Micron http://dx.doi.org/10.1016/j.micron. 2017.06.010 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Research Highlights Anodised aluminium oxide coating samples were prepared for SEM examination. Three preparation methods were trialled to assess coating thickness and structure. Cryogenic fracturing was found to be destructive to samples. Mechanical fracturing provided relatively accurate coating thickness measurements. Coating structure could only be evaluated from mechanically fractured samples. 2 AbstractCharacterisation of anodic aluminium oxide coatings and measurement of their thickness using microscopic techniques is valuable for analysing the effectiveness of the prior anodising process. Three different methods for preparing samples to view the coating cross-section (mechanical fracturing, cryogenic fracturing and metallography) were trialled and assessed for speed of implementation, simplicity and achievable measurement accuracy. Cryogenic fracturing was found to be destructive to samples. Mechanical fracturing yielded relatively accurate coating thickness measurements and coating structural information. Metallography provided the most accurate coating thickness measurement at the expense of coating structural information.

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“…Following the method originally described by Butler and Dawson (1976), a rectangular section approximately 1 cm x 2 cm was sawn from coupons of each anodised aluminium alloy.…”

Section: Methods 2: Cryogenic Fracturingmentioning

confidence: 99%

Section: Cross-section View Sample Preparationmentioning

confidence: 99%