Application of zirconia thermal barrier coating on the surface of pulling-straightening roller

Abstract

This paper aims to extend the service life of pulling-straightening rollers. For this purpose, a zirconia thermal barrier coating (TBCs) was prepared on the roller surface, and the properties of TBCs prepared by plasma spraying and laser remelting were investigated separately. Then, the surface temperature distribution of roller was calculated with ABAQUS. Next, the conventional zirconia and nanoscale zirconia were coated on H13 steel, and observed using a confocal laser scanning microscope and a thermomechanical simulator. It is found that TBCs can reduce the roll surface temperature and thus the thermal stress; both laser remelting and nanoscale zirconia can improve the quality and thermal shock resistance of the coating. This research on TBC properties lays a solid basis for the application of the TBC on pulling-straightening roller.

Thermally-insulated ultra-fast high temperature sintering (UHS) of zirconia: A master sintering curve analysis

“…Because of their unique combination of mechanical, thermal, biological, and electrochemical properties, zirconia ceramics suit a wide range of applications: as dental materials [1,2], thermal barrier coatings [3], solid-oxide fuel cells [4,5], oxygen sensors [6] and cutting tools. Pure zirconia results in three different polymorphs, which are stable at different temperatures: monoclinic (T < 1170°C), tetragonal (1170 < T < 2400°C), and cubic (T > 2700°C).…”