Microstructural Characteristics and Mechanical Properties of Nanostructured and Conventional TiAlN and AlCrN Coatings on ASTM-SA210 Grade A-1 Boiler Steel

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td align="left" rowspan="2">Coating</td><td align="center" rowspan="2">
										Surface roughness (nm)</td><td align="center" colspan="2">Particle size (nm)</td><td align="center" rowspan="2">
										Porosity (% age)</td><td align="center" rowspan="2">
										Coating thickness (µm)</td><td align="center" rowspan="2">
										Coating color</td></tr><tr class="thead"><td align="center">Scherrer <br/>formula</td><td align="center">AFM <br/>analysis</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td align="left">Nanostructured TiAlN coating</td><td align="center">03.75</td><td align="center">16</td><td align="center">18</td><td align="center">&lt;0.5</td><td align="center">6.1</td><td align="center">Violet grey</td></tr><tr><td align="left">Nanostructured AlCrN coating</td><td align="center">06.10</td><td align="center">26</td><td align="center">28</td><td align="center">&lt;0.5</td><td align="center">4.2</td><td align="center">Light grey</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Microstructural and mechanical properties of nanostructured thin TiAlN and AlCrN coated ASTM-SA210 Grade A-1 boiler steel.

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Table 5

Table 5: Microstructural Characteristics and Mechanical Properties of Nanostructured and Conventional TiAlN and AlCrN Coatings on ASTM-SA210 Grade A-1 Boiler Steel 

Table 5 | Microstructural Characteristics and Mechanical Properties of Nanostructured and Conventional TiAlN and AlCrN Coatings on ASTM-SA210 Grade A-1 Boiler Steel 