Research Article

Microstructure and Mechanical Properties of the Butt Joint in High Density Polyethylene Pipe

Figure 3

SEM images of the tensile fracture surface of W-PE10 (a, b) near to crack initiation point and W-PE10 after etching with potassium permanganate based etchant (c, d). Scale bar is 500 μm (a, c) and 100 μm (b, d).
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