Tea-based slurry can reduce pollution, save bucks

June 2004
InTech;Jun2004, Vol. 51 Issue 6, p18
A combination of phytochemicals from green-tea extract, synthetic proteins, and an abrasive to produce a lapping slurry that is three to four times faster at polishing magneto-resistive heads than the ones currently in use, will create a compound that can clean up hard drives, according to John Lombardi, president of Ventana Research Corp. Another plus with the slurry is that it is also environmentally friendly, unlike many of the solvent-based slurries now used. That could save millions of dollars for hard-drive manufacturers. The computer industry produces more than 161 million hard drives a year, with read-write heads that must have no imperfections larger than 10 angstroms, Lombardi said. Ventana Research Corp. formulates specialty compounds and is looking at other applications for tannin phytochemicals. Their high affinity for metals and ceramics could lead to applications in mining, high-performance adhesives, specialty coatings, removal of metal contaminants from water, and wastewater treatment, among others.


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