In modern advanced manufacturing, chromium (Cr) and its alloy targets serve as indispensable core materials for physical vapor deposition (PVD) technology, particularly magnetron sputtering processes. They act as “converters,” transforming high-purity metals or alloys into functional thin films with specific properties—such as wear resistance, corrosion resistance, electrical conductivity, and optical characteristics—through ion bombardment in a vacuum environment, depositing these films onto various substrate surfaces. From enhancing the appearance and durability of everyday consumer goods to supporting microfabrication in cutting-edge technologies like semiconductors and data storage, chromium-based targets play a critical role.
Part 1: Major Product Series of Chromium and Chromium Alloy Targets
Based on material composition, geometry, and purity grade, chromium target products have formed a comprehensive system to meet the stringent requirements of diverse application scenarios.
1. Classification by Material Composition
This is the most fundamental classification dimension, as different compositions determine the final properties of the thin film:
Pure Chromium Targets: This is the most basic variety, with purity ranging from industrial-grade 99.5% to semiconductor-grade 99.95% (3N5). Pure chromium films are known for high hardness, excellent adhesion, good electrical and thermal conductivity, and strong corrosion resistance. They are widely used in decorative coatings, tool coatings, and some electronic components.
Binary and Multi-component Chromium Alloy Targets: By incorporating other elements into the chromium matrix, comprehensive properties unattainable with pure metals can be achieved. Common products include:
Chromium-Aluminum (Cr-Al) Alloy Targets: Typical compositions include Cr50Al50, Cr30Al70 (at%), significantly enhancing film hardness and high-temperature oxidation resistance. They are core materials for wear-resistant coatings on cutting tools and molds.
Chromium-Titanium (Cr-Ti) Alloy Targets: Combining the hardness of chromium with the toughness of titanium to improve overall mechanical properties of the film.
Nickel-Chromium (Ni-Cr) Alloy Targets: Such as NiCr (80/20 wt%), featuring high resistivity and excellent high-temperature oxidation resistance, widely used in thin-film resistors, heating elements, and architectural glass coatings.
Other Specialized Alloy Targets: Including chromium-silicon (Cr-Si) for semiconductor resistor films, cobalt-chromium-platinum (CoCrPt) for high-density magnetic storage media, as well as iron-chromium (FeCr), copper-chromium (CuCr), nickel-chromium-silicon (NiCrSi) , and others to meet specific electrical, magnetic, or optical performance requirements.
2. Classification by Shape and Specifications
The physical form of targets must be compatible with sputtering equipment, and they are mainly divided into three categories:
Planar Targets: The most common rectangular or circular flat shape, with diameters/sizes ranging from 1 inch to several hundred millimeters, typically 1–6 mm in thickness, and available with custom dimensions.
Rotary Targets: Tubular in shape, these targets rotate during sputtering, offering higher material utilization and suitability for large-area, continuous coating production, with lengths reaching up to 4 meters or more.
Special-shaped Targets: Customized for specific equipment requirements, such as ring-shaped, arc, or other configurations.
3. Classification by Purity and Application Grade
Industrial/Decorative Grade (purity ≥ 99.0%): Serves markets such as tool coating and hardware decoration where purity requirements are less stringent.
High-end Application Grade (purity ≥ 99.95% up to 99.99%): Exclusively used in fields such as semiconductors, flat-panel displays, and data storage, where film electrical properties, optical performance, and consistency are held to the highest standards.
Part 2: Diverse Application Fields
Chromium-based targets span both traditional industries and cutting-edge technologies, with the market continuing to grow steadily.
Decorative and Functional Coatings: This is a large and mature market. Chromium films deposited via PVD provide both bright, rich metallic finishes (used on faucets, automotive wheels, mobile phone housings) and ultra-hard coatings such as chromium nitride (CrN), significantly extending the service life of cutting tools, molds, and engine components.
Semiconductors and Microelectronics: In this field, chromium targets are used to manufacture thin-film resistors, barrier layers, and electrodes in integrated circuits. Extremely stringent requirements are placed on target purity (3N5 or higher) and microstructural uniformity.
Data Storage and Optical Applications: Chromium-based alloy films are key materials for manufacturing high-density hard disks and optical storage media. In optics, they are used to produce opaque layers and anti-reflective coatings for photomasks.
Energy-Efficient Glass Coatings: Nickel-chromium alloy targets are important materials for producing Low-E (low-emissivity) glass, effectively reflecting infrared radiation to achieve building energy savings.
Chromium and chromium alloy targets are key elements connecting material innovation with end-use applications in modern industrial systems. Their product range has evolved from a single pure chromium metal to a comprehensive system covering various alloy compositions, forms, and purity grades, capable of precisely serving diverse needs—from everyday consumer goods to cutting-edge technologies.
Post time: Sep-07-2026