| 摘要 |
<p>The invention provides a method of selecting candidate coating materials for high temperature applications. The method involves measuring the zeta potentials of a fouling material and a candidate coating or surface. Figure shows the experimental arrangement used for zeta potential measurement. Pump (1) flows electrolyte into the loop (2). Heating tapes (3) are wrapped around the tubing and controlled by temperature controllers (4). A YSZ pH electrode (5) and an external pressure balanced reference electrode (6) measures pH. System pressure is measured by gauge (7) and maintained by release valve (8). The solution is cooled with cooling jacket (9). Substance powder (11) to be measured is packed into a rulon column (10) and held by Pt screens (12) and teflon filters (13). Electrode contacts are made through rulon ferrules (14). A differential pressure transducer (15) is provided.</p> |
