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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.

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.

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.

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

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.

Describes the preparation and properties of heat‐resistant paints based on an epoxy blended with rhodorsil silicone resin. Studies the heat‐resistant properties as per ASTM standard (D 2485‐91). Also determines the properties of the liquid paint and coated metal panels. Assesses the thermal degradation of the coating both by electrochemical (potential vs time and EIS) and structural (SEM) means. Results reveal that the coating is stable up to 200°C on a mild steel surface and degradation takes place only beyond this temperature. Discusses the failure mechanism of the above coating in light of the experiment’s results.

The purpose of this paper was to prepare and evaluate a nanosized mixed calcium iron oxide as a high heat-resistant pigment. Heat-resistant pigments can be defined as chemical substances that impart color to a substrate or binder and retain their color and finish at elevated temperatures. Mixed metal oxides have been widely used as pigments in coating formulations.

This work presents synthesis of nanosized calcium iron oxide as an inorganic pigment by using simple synthesis technique, namely, solid-state calcination method, to study its heat and corrosion resistance. The prepared pigment was characterized by using X-ray diffraction, infrared spectroscopy, scanning electron microscopy and inductive coupling plasma. It was incorporated into paint formulations, and the heat, corrosion and mechanical resistance of dry paint film was evaluated.

In this work, the prepared calcium iron oxide pigment showed excellent heat and corrosion resistance.

Heat-resistant coatings are required for industrial applications, mainly for reactors, exhaust pipes, space craft, stacks and similar equipments that are permanently and occasionally exposed to elevated temperatures. It was previously quite difficult to formulate heat-resistant organic coatings because of binder deficiencies; new vehicles for such applications are now available. Thus, the development of silicon resins has markedly advanced the utility of heat-resistant paints. High-temperature pigments are inorganic chemical compounds that impart and retain their color and finish to a substrate or binder at elevated temperatures.

The nanosized mixed calcium iron oxide could be used as a pigment in paint formulations. It was found that it significantly enhances the heat, corrosion and mechanical resistance. It can also find numerous applications in other paint formulations for surface coating.

The paper shows how the pigment consisting nanosized mixed calcium iron oxide could be used in heat-resistant paint formulations for coating metal surfaces.

The importance of heat‐resistant coatings has grown during the last decade due to the new developments in the field of aircraft and space vehicles. These finishes are frequently exposed to intensive due to air pressure at high speeds. At a velocity of 5,000 miles/hr the metal surface may well reach a temperature of 1100°C. Differential expansion between coating and substrate over a wide temperature range presents a second serious problem. In these circumstances the thermal conductivity and overall heat transfer of the coating may well become the key formulation factor.

The purpose of this paper is to propose and assess the possibility of using ceramic coating layer as a heat‐resistant material in micro solid propellant thruster.

A ceramic layer is coated on the inner surface of the combustor of a micro thruster by applying micro‐arc oxidation (MAO) technology. The thermal property of the coating is analyzed with laser pulse method. To evaluate the heat‐resistant performance of the coating, the temperature history of the micro thruster inner surface is experimentally tested and recorded in a water thermostat bath. A numerical simulation of the thruster working condition is also carried out.

Both experimental and simulation results reveal that the heat‐resistant ability of the coating processed by MAO is proven to be effective.

This paper attempts to help designers choose material processing technology to improve micro solid propellant thruster heat‐resistant ability.

The paper shows that with a ceramic coating layer processed with MAO, aluminium can sustain higher temperature and it can be used as the structural material for short‐time‐work micro thruster.

Silicone resin based protective coatings are generally used for high temperature applications. In this work, anti‐corrosive and heat resistant properties of titanium dioxide, mica, zirconium oxide and quartz combination pigments with silicone resin as carrier vehicle in primer and top coat for mild steel surface have been evaluated. Promising results were obtained, showing that the ceramic pigments (zirconium oxide and quartz) impart heat‐resistance protection for steel substrate up to 370°. Electro‐chemical impedance spectroscopy, immersion studies and salt spray test results show good corrosion protection for the steel surface.

Highly efficient heat‐resistant paint formulations based on Egyptian manganese ore (high and medium grades) and silicon resin were prepared. The heat‐resistance efficiency as well as the physico‐mechanical properties of the painted films were evaluated. Promising results were deduced, showing that manganese ore imparts heat‐resistance protection for painted substrate up to 450°C. The anticorrosive properties of these paint formulations were moderate but their efficiency as heat‐resistant anticorrosive paints was improved by adding 1 per cent of melamine to the paint constituents.

High temperature coating research is carried out largely by companies who are interested in developing high temperature‐resistant resins, frequently for reasons other than coatings. The market for such coatings is, of course, small, but when they are truly needed, the role they play is an extremely important one.

I am delighted that the fifth Corrosion and Metal Finishing Exhibition has been brought to Leeds and I congratulate the sponsors and exhibitors on their decision to stage this Exhibition in the heart of the industrial north.

Maintenance coatings have several functions but certainly one of their most important is to combat corrosion. Corrosion protection is important in both maintenance and industrial coatings and this is stressed in an article in Chemical Marketing Reporter (June 6 (1983) p. 5, 20). According to this article, which quotes results from a marketing research firm, Margolis Marketing and Research, corrosion resistance will provide the objectives for an important segment of the coatings industry in highway construction and in the automotive industry. The use of salt on highways to melt snow and ice is increasing and this causes billions of dollars of damage to iron and steel each year. U.S. roads are covered with over 10 million tons per year of salt. In the industrial area galvanised steel has become an important component of items subject to rust such as the automobile.