cubic boron nitride


Also found in: Dictionary, Acronyms.

cubic boron nitride

[¦kyü·bik¦bȯ‚rän ′nī‚trīd]
(mechanical engineering)
A synthetic material composed of boron and nitrogen (1:1) that is almost as hard as diamond, used as a superabrasive powder and for cutting and grinding applications.
References in periodicals archive ?
Peterka: Comparison of machining of poly-crystalline cubic boron nitride by rotary ultrasonic machining and laser beam machining in terms of shape geometry.
Ranking next to diamond on the hardness scale, polycrystalline cubic boron nitride (PCBN) has proven to be a durable tool material for cutting hard-to-machine metals such as high-temperature and hardened ferrous alloys.
The hardness of these superlattices turned out to be 45 to 55 GPa--not close to diamond but slightly better than cubic boron nitride, the current second-best material.
Cubic Boron Nitride (CBN) is becoming the preferred choice of most grinding operations as it helps in achieving regular geometries, better integrity on the polished surface and decreased cycle times.
If the material hardness ranges between 50-68 HRc and the depth of hardness is greater than the depth of material to be removed, then cubic boron nitride (CBN) is the best medium for use.
This report analyzes the worldwide markets for Cubic Boron Nitride Abrasives in Thousands of US$.
Potential presenters of papers on developments in super-hard materials, such as diamond, cubic boron nitride, polycrystalline diamond, and other superabrasives, are invited to submit their proposals for Intertech 2003, the international technical conference to be held in Vancouver, British Columbia, July 28-August 1, 2003.
The manufactured abrasives most commonly used in grinding wheels are aluminum oxide, silicon carbide, cubic boron nitride and diamond.
Products are manufactured in cemented carbide, high-speed steel and other hard materials, such as diamond, cubic boron nitride and special ceramics.
You might say it's a battle over market shares between products made of aluminum oxide or silicon carbide abrasive grains, which have a history dating back to the late 1800s, and products made with synthetic diamond and cubic boron nitride, abrasives that first appeared in markets in the 1960s and 1970s.
CUBIC BORON NITRIDE ABRASIVES MCP-2171 A GLOBAL STRATEGIC BUSINESS REPORT
We also expect cubic boron nitride (CBN) ceramics, and polycrystalline diamond (PCD) to play larger roles.