In recent years, with the continuous expansion of the application scenarios of high-end graphite components in extreme environments, the ordinary uncoated graphite products can no longer meet the long-term service requirements of high-temperature ablation, strong corrosion and aerobic oxidation environments. The research and development and popularization of functional modified coating technology have become an important direction of the technical iteration of the global high-end graphite industry. In 2026, a variety of new high-performance graphite functional coating technologies have achieved industrial breakthroughs, bringing revolutionary improvements to the service performance of graphite components.
The new generation of graphite functional coatings mainly includes three core types: SiC ceramic anti-ablation coating, pyrolytic carbon dense anti-oxidation coating and carbon-based composite anti-corrosion coating. Different coatings are targeted at different extreme working conditions to achieve precise performance optimization. The SiC ceramic coating is mainly used for aerospace ultra-high temperature ablation environments, which can resist high-speed airflow scouring and ultra-high temperature ablation above 3000℃; the pyrolytic carbon coating is suitable for photovoltaic and vacuum furnace high-temperature aerobic environments, which can effectively isolate oxygen erosion and inhibit product oxidation failure; the carbon-based composite anti-corrosion coating is targeted at metallurgical molten salt and strong acid-base corrosion environments, which can completely isolate corrosive media penetration.
Compared with traditional single coating technology, the new composite functional coating has the advantages of higher density, stronger adhesion and longer service life. The traditional coating is prone to peeling and failure after long-term high-temperature operation, while the new composite coating forms an integrated bonding structure with the graphite matrix, with no falling off or cracking in long-term extreme environments. After coating modification, the anti-ablation performance of graphite components is improved by more than 60%, the anti-oxidation life is increased by more than 50%, and the anti-corrosion ability is doubled, which greatly reduces the equipment maintenance and replacement costs of downstream enterprises.
At present, European and American enterprises are mainly concentrated in the research and development of single aerospace anti-ablation coating, while Chinese leading graphite enterprises have taken the lead in realizing the industrialized application of full-series composite functional coatings, covering aerospace, photovoltaic, metallurgical, glass and other full-scenario product modification needs, with overall technical level leading the world.
Huixian Jincheng Abrasive & Graphite Mold Factory is one of the earliest domestic enterprises to carry out independent research and development and industrial application of graphite composite functional coating technology. After years of technical research, the company has formed a full-set mature coating process system suitable for different industrial scenarios, realizing personalized coating modification of graphite components in all fields.
In terms of aerospace products, Jincheng Graphite adopts self-developed enhanced SiC ceramic composite coating technology. Through multi-layer spraying and high-temperature curing process, the coating density and bonding strength are further improved, which can resist long-term ultra-high temperature ablation and high-speed airflow scouring, and the service life of aerospace components is increased by more than 65%. For photovoltaic thermal field components, the company uses high-density pyrolytic carbon anti-oxidation coating to solve the problem of silicon vapor erosion and high-temperature oxidation failure of thermal field parts, and the continuous service cycle of products is increased by 45%.
Aiming at the strong corrosion working conditions of the metallurgical industry, Jincheng Graphite's customized carbon-based composite anti-corrosion coating can effectively resist the erosion of fluoride and chloride molten salt, completely solve the problem of internal corrosion and peeling of metallurgical graphite parts, and double the service life of products. For high-end glass graphite molds, the company's ultra-thin smooth anti-oxidation coating ensures the ultra-high surface finish of the mold, avoids glass adhesion and surface defects, and greatly improves the yield of high-end optical glass products.
At present, Jincheng Graphite's full-series functional coating technology has been fully applied in customized high-end graphite products, and the comprehensive performance of products has reached the international advanced level. With the continuous iteration of extreme environment manufacturing technology in the global high-end industry, the company will continue to optimize coating formula and process technology, further improve the extreme environmental adaptability and long-life performance of graphite components, and lead the technical upgrading of the global graphite deep-processing industry.
