Determining E1 and E2 values for yttrium aluminum garnet ceramics using the Duane-Hunt limit.

Abstract:

:A major challenge when performing scanning electron microscopy and X-ray analysis on many ceramic materials is their electrical insulation properties, which leads to buildup of the surface charge and reduced contrast in the secondary electron image. A new procedure was established to quantitatively determine the neutral state values, E1 and E2 , of yttrium aluminum garnet (YAG) ceramics using the Duane-Hunt limit (EDHL ) of Bremsstrahlung, in order to eliminate this charge effect. Thirty-eight EDHL values were linearly fitted with the last portion of X-ray spectra acquired under the incident energy, E0 , from 0.35 to 5.0 kV. According to the distribution of EDHL , two piecewise linear fitting was first employed with a breakpoint of 1.0 kV. Consequently, two intersection points of 0.54 and 2.48 kV, which correspond to E1 and E2 for YAG ceramics, were directly determined using a theoretical curve (EDHL  = E0 ). As a result, the high-resolution images of the YAG ceramic grain structure were successfully obtained using the calculated E1 and E2 values.

journal_name

Microsc Res Tech

authors

Wang Y,Kong M,Khan M,Zhang J,Lin C,Zeng Y

doi

10.1002/jemt.23118

subject

Has Abstract

pub_date

2018-10-01 00:00:00

pages

1203-1207

issue

10

eissn

1059-910X

issn

1097-0029

journal_volume

81

pub_type

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