Electronics & Semiconductor

In electronics and semiconductor equipment the requirement is not wear resistance at all — it is electrical insulation, dimensional stability, thermal conductivity and cleanliness. Parts are small, tolerances are tight, and a single out-of-spec dimension stops a machine.

How wear actually happens

• Thick-film and thin-film substrates. Flatness and surface finish determine whether the printed pattern holds its tolerance.
• High-voltage insulators. Dielectric strength and creepage distance, in housings that also see thermal cycling.
• Vacuum process parts. Outgassing and purity matter as much as geometry; porosity is not acceptable.
• Wafer handling and plasma equipment. Alumina parts exposed to plasma and to aggressive cleaning chemistry.
• Sensor and detector housings. Hermetic sealing against a ceramic surface requires controlled surface finish.

What we normally supply

• AL-99 / 99.7 substrates, plates and discs, lapped to Ra 0.1 µm
• AL-99.7 insulators, spacers and standoffs to drawing
• AL-99.7 tubes, crucibles and sheaths for vacuum and high-temperature processes
• Metallised and brazable alumina parts on request
• Precision-ground shafts, pins and wear pads for handling equipment
• Laser-drilled and green-machined features to avoid post-firing machining cost

Typical grade and thickness

Starting points, not rules. The right specification depends on particle size, velocity and impact angle — send us the application and we will size it properly.