Research Article

Visualizing the Microdistribution of Zinc Borate in Oriented Strand Board Using X-Ray Microcomputed Tomography and SEM-EDX

Figure 1

Backscattered scanning electron microscope images of sections of three different OSB specimens containing a zinc borate additive: (a) surface of an unleached specimen showing high intensity regions (white deposits) located between different wood flakes in the composite (arrowed); (b) leached specimen showing similar white deposits to those in (a). Note the microcheck in the specimen (arrowed top right); (c) enlarged area from (a) showing white deposits occurring at the interface between aspen (centre) and pine flakes (right); (d) surface of an unleached specimen showing white deposits occurring between two wood flakes in the composite (arrowed left) and the presence of an isolated white deposit (arrowed right). All scale bars are 100 μm in length except for (c) which is 20 μm.
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