Tantalum-Coated Atomizing Core for Dry-Heat Corrosion Resistance

The patent applies composite materials by combining the thin-film heating layer with a corrosion-resistant substrate layer. The heating film (300-5000 nm thick) is deposited on a substrate containing corrosion-resistant materials, creating a composite structure that maintains the thin-film's high atomizing efficiency while adding protection against dry-heating failure and electrochemical corrosion. This composite approach allows the system to achieve both improved productivity and enhanced reliability.

The patent uses the substrate as an intermediary layer between the heating film and the corrosive environment. The substrate contains corrosion-resistant materials that act as a barrier, protecting the metal heating film from direct contact with corrosive substances in the e-liquid. This intermediary structure allows the heating film to operate at high temperatures (300°C or more) for improved atomizing performance while the substrate shields it from high-temperature electrochemical corrosion, thereby enhancing reliability.

The patent creates a composite structure where a thin heating film (maintaining good material consistency) is combined with a corrosion-resistant substrate. The thin heating film layer provides consistent heating characteristics for enhanced atomizing efficiency, while the substrate layer compensates for the reduced thickness by providing mechanical strength and corrosion protection. This composite approach resolves the contradiction by allowing the heating film to be thin enough for material consistency while the substrate ensures reliability against corrosion and dry-heating damage.