Black enamel for concentrated solar-power receivers

K. Malnieks, G. Mezinskis, I. Pavlovska, L. Bidermanis, A. Pludons

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


High SiO2 content frit modified with commercial black spinel-type pigment K 6038 of chromium and iron oxide mixed with 40-100 wt% per 100 wt% by weight of frit were deposited on stainless steel alloys by the slip-casting technique and their optical properties were characterised by total reflectance of 300 nm to 20 μm. The enamel coating exhibited moderate spectral selectivity and excellent thermal stability at 600 °C. Solar absorbtance (α) ranged from 0.75 to 0.82 and calculated thermal emittance at 600 °C (ε) ranged from 0.35 to 0.45. Both depended on coating surface and pigment volume in the frit. The highest solar selectivity was measured in enamel with 50% pigment with α and ε (600 °C) of 0.81 and 0.35, respectively.

Original languageEnglish
Pages (from-to)13321-13327
Number of pages7
JournalCeramics International
Issue number8 PART B
Publication statusPublished - Sept 2014
Externally publishedYes


  • Absorbtance
  • Enamel
  • Selective surface
  • Stainless steel
  • Thermal emittance

Field of Science*

  • 1.4 Chemical sciences
  • 2.5 Materials engineering

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database


Dive into the research topics of 'Black enamel for concentrated solar-power receivers'. Together they form a unique fingerprint.

Cite this