Model of Fracture, Friction,  and Wear Phenomena of Porous Iron

<table>Fractography of the iron grade PZh4M2 specimens: (a) after pressing, ×500; (b) <svg height="11.45" id="M28" style="vertical-align:-0.23827pt" version="1.1" viewbox="0 0 56.099998 11.45" width="56.099998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.45)">
<g transform="translate(72,-62.84)">
<text transform="matrix(1,0,0,-1,-71.95,63.12)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑃</tspan>
<tspan style="font-size: 12.50px; " x="10.890113" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="22.930502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="29.182001" y="0">8</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">%</tspan>
</text>
</g>
</g>
</svg>, ×200; (c) <svg height="11.45" id="M29" style="vertical-align:-0.23827pt" version="1.1" viewbox="0 0 56.099998 11.45" width="56.099998" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.45)">
<g transform="translate(72,-62.84)">
<text transform="matrix(1,0,0,-1,-71.95,63.12)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑃</tspan>
<tspan style="font-size: 12.50px; " x="10.890113" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="22.930502" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="29.182001" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">%</tspan>
</text>
</g>
</g>
</svg>, ×700.</table>

Advances in Tribology

Model of Fracture, Friction, and Wear Phenomena of Porous Iron

Figure 1