Characterization of coatings and the low cycle fatigue behaviour of 316L

摘要

In the framework of the European Fusion Technology Program, ECN participates in a NET task PSM-8 'Coatings and Surface Effects on Stainless Steel 316L'. High emissivity coatings were developed for enhanced heat transfer from graphite tiles to a Stainless Steel First Wall. Four candidate materials, Cr(sub 2)O(sub 3), Black Cr, Al(sub 2)O(sub 3)/TiO(sub 2) and TiC were tested as candidate high emissivity coatings. These coatings were manufactured by atmospheric and vacuum plasma spraying technique and the Black Chromium coatings were manufactured by a galvanic coating technique. The tests included total emissivity measurements and Low Cycle Fatigue (LCF) experiments. The total emissivity of two TiC coatings at 525 K appeared to be 0.62 and 0.64. The total emissivity of the TiC and 5 wt% TiO(sub 2)/Al(sub 2)O(sub 3) coating was about 0.7. (orig.) (ERA citation 19:034931)