Metallized Alumina Ceramic Ring

Mo/Mn metallized and Ni, Cu, Ag or Au plated rings ready to braze.

electrical transmission and distribution
electronics industry
textile machinery
automobile industry
sealing
solid oxide fuel cells

Metallized Alumina Ceramic Ring specification
Material	Alumina (Al2O3)
Size	Custom
Color	White + metal
Coating Layer	Mo/Mn
Plated Layer	Ni, Cu, Au, etc
Metallization thickness	25 ±10 um
Nickel thickness	2-10 um
Pin pull strength	4200 kgf/cm2 avg at Φ3.0mm pin

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Overview

Metallized ceramic components for brazing to metal. Available ceramic compositions are 95% and 96% alumina ceramic components, AlN ceramic substrate and BeO ceramic substrate. Metallization and brazing are possible and our processing is available in a wide range of sizes and shapes as the customer requests.

Key Benefits

Metallization thickness 25 ±10um
Nickel thickness 2-10um
Pin pull strength 4200kgf/cm2 avg
Brazeable to metal parts

Problems It Solves

A polymer insulator softens long before the assembly reaches process temperature.
Yarn cuts a groove into a metal guide, and the groove then cuts the yarn.
A ceramic to metal joint has to be gas tight and survive thermal cycling.

Application Scenarios

Metallized ceramics for vacuum interrupters
Metallized ceramics for electrical and electronic devices
Ceramic brazed components
Ceramic metallizing
Welding ceramic part

Who It Is For

Specifications

Metallized Alumina Ceramic Ring specification
Material	Alumina (Al2O3)
Size	Custom
Color	White + metal
Coating Layer	Mo/Mn
Plated Layer	Ni, Cu, Au, etc
Metallization thickness	25 ±10 um
Nickel thickness	2-10 um
Pin pull strength	4200 kgf/cm2 avg at Φ3.0mm pin

Material Data

Material data for this part is issued with the quotation, against the grade and the duty you specify. Published property tables for zirconia and 99% alumina are on the materials page.

Available Build Types

Ceramic + Mo/Mn metallized + plating Ni
Ceramic + Mo/Mn metallized + plating Ag
Ceramic + Mo/Mn metallized + plating Au
Ceramic + printing Ag

Manufacturing Process

Material And Drawing ReviewWe start from your drawing, sample or performance requirement and confirm which of the five material families fits the duty.
Powder Preparation And FormingDry pressing, hot pressing or injection moulding, chosen by the shape and the wall thickness of the part.
High Temperature SinteringParts are sintered to full density. Zirconia reaches 6.0 g/cm3 and 99% alumina reaches 3.85 g/cm3.
Grinding Polishing And CNCSurface grinding, internal and external diameter grinding and precision CNC machining bring the part to final size and finish.

Quality Control

We promise to provide quality assurance for all products. Parts are inspected according to your drawings and we issue an inspection report with the shipment.

We follow standard packaging protocols to protect your products during transit and provide photographic documentation of the packing and shipping process for your reference. In the event of transportation damage caused by non-human factors, we arrange a free replacement shipment.

From raw material preparation, forming, surface grinding, internal and external diameter grinding, to precision CNC machining, all processes are carried out in house under strict quality control.

See the full quality page

Customisation Options

Size and shape made to your drawing
Material grade selected against the duty rather than assumed
Surface finish, including ground and polished faces
Colour where the material allows it
Metallizing and plating where the part has to braze into an assembly

Our main business is OEM and ODM. Send your drawing over WhatsApp or email and we will quote the part.

Comparison With Other Materials

Published values from our own material tables
Property	Zirconia	Alumina	Steatite
Flexural strength	Zirconia 800 MPa	99% alumina 330 MPa	Steatite relatively high
Fracture toughness	Zirconia 9.0 MPam1/2	99% alumina 4 MPam1/2	Not published
Max use temperature	Zirconia not rated here	99% alumina 1650C	Steatite 1100C
Thermal conductivity	Zirconia 2.5 W(m.K)	99% alumina 27.5 W(m.K)	Good
Density	Zirconia 6.0 g/cm3	99% alumina 3.85 g/cm3	Talc based
Dielectric strength	Zirconia not published	99% alumina >10 KV/mm	Excellent

Read the full material comparison

Use Guide

Confirm the fit before you order volumeTake a free sample first. Samples ship in 4 to 7 working days and we do not charge for the part, only the freight.
Give the critical dimension a toleranceCeramic is ground to size after sintering. Marking one dimension as critical is cheaper than treating them all as critical.
Handle by the body, not the edgeCeramic is hard but it chips. Zirconia tolerates handling far better than alumina because its fracture toughness is more than twice as high.
Tell us the duty, not just the shapeTemperature, fluid, load, speed, and whether the part has to insulate or stay non-magnetic, all change which grade we would quote.

Questions About This Part

Can this part be made to our drawing?

Yes. We can supply the products according to the customer's drawings, samples and performance requirement.

What is the minimum order quantity?

MOQ depends on the size and the forming route. Send the drawing and we will confirm it with the quotation.

How long does a sample take?

Sample delivery is 4 to 7 working days, free of charge, freight not included.

What are the payment terms?

Payment up to 1000 USD is 100% in advance. Above 1000 USD it is 50% T/T in advance with the balance before shipment.

How will the parts be packed?

We follow standard packaging protocols and provide photographic documentation of the packing and shipping process for your reference.

Related Services

Metallizing And BrazingMo/Mn metallizing with Ni, Cu, Ag or Au plating

Get A Price On Metallized Alumina Ceramic Ring

Send the drawing, the quantity and the duty. Samples are free and take 4 to 7 working days.