Other Materials

OTHER MATERIALS

 

We are always happy to make polishing trials on novel materials, and over the years we’ve accumulated a database of many that we can mirror polish. These include Molybdenum, Tungsten Carbide, Aluminium, ARCAP, Brass, Be-Cu, Nickel, Titanium, Ceramics, Alloys and various stainless steels.

Beryllium/Copper alloy

Not to be confused with pure Beryllium metal, which as a dust is highly toxic, Beryllium/Copper (Be-Cu) is an alloy that has useful properties for deformable structures, such as adaptive mirrors.

LBP has developed annealing and plating techniques to make highly accurate Be/Cu mirrors that are easily deformable in a controlled way, and elastic enough to return to their original surface form.

To date we have made gold coatings and MaxR coatings on these types of mirrors, but we think customers will find uses and applications we have yet to think of for these very useful products. Please contact us with your ideas!

Hardened Metal Mirrors

Some industrial mirrors need more than reflectivity and laser damage threshold. For example surface hardness, chemical resistance and magnetic properties might be important.

We have had several requests for more unusual materials. We have made square mirrors from EN31 (a tool steel hardened to Rockwell 60-64) and we’ve produced mirrors from the more exotic Titanium (Grade 5) which is widely used in the aerospace and medical industries, and Densimet 185 Tungsten Carbide

Brass Mirrors

Brass is an alloy of copper and zinc. The different alloy ratios can give metals with varying properties such as Naval Brass and DZR Brass.

The absence of ferromagnetism in Brass can be useful, and it's corrosion resistance means it finds uses in steam and boiler equipment. It’s a popular metal in scientific instruments, as it will not spark.

Brass responds well to photochemical milling, allowing thin intricate structures to be made economically. It also plates with electroless nickel extremely well, allowing it to be gold plated. We have made chopper wheels and other lightweight finely featured reflectors from photo etched brass  

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