Nickel-chromium-aluminum alloys are a class of functional target materials that possess high-temperature stability, oxidation resistance, and excellent sputtering performance. They are widely used in the preparation of high-temperature protective coatings, wear-resistant coatings, semiconductor thin films, and sensor electrodes. The core requirements for their preparation include compositional uniformity, high density (≥98% of theoretical density), fine-grained microstructure, and low impurity content (O, C, N, etc. ≤500 ppm) to ensure stable film composition and uniform deposition rate during the sputtering process.
Preparation Method of Nickel-Chromium-Aluminum Alloy Sputtering Targets
Pre-pressing: The mixed powder is loaded into a graphite mold and formed into a preform in a hot press furnace.
Three-stage hot pressing and sintering:
First stage: Completion of degassing and initial sintering;
Second stage: Promotion of alloying;
Third stage: Achieving full densification (relative density > 99%) and grain refinement, forming an ingot close to theoretical density.
Use Cases for Nickel-Chromium-Aluminum Alloy Sputtering Targets
Aerospace Industry: Component thermal corrosion resistance improved, and service life increased when bonded as a thermal barrier coating in aircraft engines and protective coatings on turbine blades and other engine components.
Energy Equipment Industry: Protective coatings on gas turbine blades and other nuclear protective equipment components. Thermal boilers in nuclear power plants also have protective coatings. Ensures stable equipment operation in high-temperature environments.
Electronics industry: Can be used to prepare resistive thin films, protective layers for electronic components, etc., utilizing its high resistivity and stable physical and chemical properties to meet the performance requirements of electronic components.
Industrial equipment manufacturing: Can be used as protective coatings for heat treatment furnace rollers, heat-resistant linings for chemical reactors, surface strengthening of glass molds, etc., improving the wear resistance and corrosion resistance of industrial equipment.
Decorative field: Used for surface treatment of jewelry, watches, mobile phones, and other products, forming a beautiful decorative coating while providing protection.
