Alumina Ceramics

Product Overview

Semixlab supplies precision alumina (Al₂O₃) ceramic components for semiconductor equipment, vacuum systems, electrical insulation and wafer handling. Alumina offers high hardness, dielectric strength, mechanical stability and chemical resistance, providing a reliable and cost‑effective solution for chamber, power‑delivery and automation components.

Typical products include insulating rings, tubes, nozzles, spacers, feedthrough components, guide components, support pins and custom structural ceramics.

Key Features & Advantages

Electrical Insulation: High resistivity and dielectric strength support high‑voltage, RF and feedthrough assemblies.
High Wear Resistance: Hard ceramic surfaces provide long service life in sliding, guiding and high‑cycle equipment parts.
Chemical Stability: Dense alumina resists many acids, solvents and semiconductor process environments.
Multiple Purity Grades: 95% to high‑purity alumina options allow performance and cost to be matched to the application.

Technical Specifications

Parameter	Standard / Typical Value
Material	95%‑99.7%+ Al₂O₃
Density	3.6‑3.9 g/cm³
Hardness	1,200‑1,800 HV
Flexural Strength	300‑400 MPa
Thermal Conductivity	20‑30 W/(m·K)
CTE	7‑8 × 10⁻⁶/K
Surface Finish	As‑Fired / Ground / Polished

Values vary by alumina purity, forming method, geometry, temperature and test standard.

Typical Applications

· Electrical insulators, spacers and feedthrough components
· Rings, liners and nozzles for plasma and deposition equipment
· Wafer support pins, guides and precision handling components
· Vacuum, sensor and fluid‑control assemblies

Customization Capabilities

Semixlab offers customized alumina purity, geometry, hole pattern, flatness, parallelism and surface roughness. Green machining, precision grinding, lapping and polishing can be selected according to the part structure and tolerance requirements.

Quality Assurance & Expertise

· Material certification and grade verification
· Dimensional and surface‑roughness inspection
· Visual and functional inspection according to agreed standards
· Prototype and repeat‑production support for custom ceramic parts

Resources & Call to Action

Engineering Consultation: Share the electrical load, operating temperature, plasma chemistry and critical dimensions.
Request a Quote: Submit your drawing, alumina grade and order quantity for evaluation.
Product Resources: Explore more semiconductor material products from Semixlab.

Alumina Ceramics

Alumina is one of those materials that sits in the middle — not the highest performance, but not weak either. It gives decent insulation, handles temperature fairly well, and is mechanically stable in most cases.

You’ll find alumina parts in etching tools, ion implantation equipment, and inside vacuum chambers. They’re used where conditions are not extremely harsh but still require some level of reliability.

If the processing is done properly, particle generation can be kept under control. For many users, that’s enough. Cost is also a reason why alumina stays popular — it does the job without pushing the budget too much.