High performance heat-resistant coatings based on natural ores

Abstract

Purpose

The purpose of this paper is to prepare new economical thermal resistant coatings containing white sand (WS) and kaolin (K) fillers, which are cheap natural ores in Egypt and are sources for ceramic materials such as SiO₂ and Al₂O₃.

Design/methodology/approach

This paper investigates the effect of heat at 500°C on the durability of mild steel samples coated with silicon coatings. The coated plates were exposed to elevated temperatures according to ASTM D 2485 to determine their stability. Thermal gravimetric analysis and scanning electron microscopy were used to investigate the thermal stability of the modified films.

Findings

It was revealed that the composite fillers can enhance the thermal stability of silicon coatings. Another advantage of using the prepared composite fillers is promoting the dryness of silicon resin without heat.

Research limitations/implications

Different natural ores were used as ceramic filler to enhance the thermal stability of silicon coatings.

Originality/value

New economical thermal-resistant coatings containing white sand and kaolin were prepared to replace the expensive thermal coatings; also, they can be used in industries other than coatings, e.g. paper, rubber and plastics composites.

Citation

Abd El-Gawad, W.M. and Ahmed, N.M. (2018), "High performance heat-resistant coatings based on natural ores", Pigment & Resin Technology, Vol. 47 No. 4, pp. 330-337. https://doi.org/10.1108/PRT-05-2017-0051