Industry news and market insights on diamond wire cutting, precision machining and advanced materials.
Recycling Sapphire Kerf Waste: Research
Key Takeaways Sapphire wafers are about 0.2 mm thick — close to the diamond wire diameter — so roughly 40-50% of every ingot becomes cutting-waste powder washed away by coolant, and most of it has historically been landfilled. Analysis of washed, dried and sieved diamond-wire cutting waste shows alpha-alumina as the main component, with nickel (0.70%) and diamond (0.164%) as the main impurities. Ultrasound acid leaching beats conventional acid leaching for nickel removal: nickel falls to 0.009% at a 99.67% leaching ratio, そして。。.


