Grinding wheel with titanium aluminum nitride and hard lubricant coatings
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United States of America Patent
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Dec 30, 2003
Grant Date -
Aug 21, 2003
app pub date -
Feb 15, 2002
filing date -
Feb 15, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A grinding wheel according to the present invention includes cubic boron nitride (cBN) or other abrasive particles such as diamond secured to a substrate by an electroplated, electroless plated or brazed layer of nickel, chrome or nickel or chrome based alloy, a first antioxidation layer of, for example, vapor deposited titanium aluminum nitride (TiAIN) and a second hard lubricant layer of, for example, vapor deposited molybdenum disulfide (MoS.sub.2), diamond graphite, tungsten carbide carbon, carbon nitride, titanium carbide carbon or titanium carbon nitride. The hard lubricant layer acts as a release agent and lubricant which reduces clogging of the wheel by lowering adhesion and facilitating the release of ground material from the wheel thereby providing improved grinding performance.
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