what's CBN(cubic boron nitride) nano? where's PCBN (polycrystalline CBN) tools manufacturer? how to buy synthetic CBN single crystals(powders,grits or PCBN tips?

Fonts normal med large print close bookmark LiTaO3,LiNbO3,KTP, YVO4, YAG,TeO2, GGG,TGG, BBO,LBO, YLF,GdVO4,KGW

● titanium doped sapphire

● lithium tantalate (LiTaO3)

● lithium niobate (LiNbO3)

● kalium titanyl phosphate

(KTP)

● yttrium orthovanadate

(YVO4)

● Nd:Y3Al5O12 (Nd:YAG)

● terbium gallium garnet

(TGG)

● lithium triborate(LBO)

● Nd:yttrium lithium fluoride

● gadolinium vanadate

(GdVO4)

● Nd:KGd(WO4)2(Nd:KGW)

● germanium(Ge) wafer

● β-BaB2O4 (β-BBO)

what's CBN(cubic boron nitride) nano? where's PCBN (polycrystalline CBN) tools manufacturer? how to buy synthetic CBN single crystals(powders,grits or PCBN tips?

DFNano® supplier of synthetic CBN single crystal powders, grits or PCBN segments, manufacturer of industrial PCBN(polycrystalline cubic boron nitride)tools in china.

polycrystalline cubic boron nitride (PCBN) composites are produced by sintering

micron CBN (cubic boron nitride) powders with various ceramics, so as to produce extremely hard and thermally stable tooling materials. Most PCBN materials are integrally bonded to a cemented carbide substrate. CBN is the second hardest

material known after synthetic diamond, but has high thermal and chemical resistance properties. PCBN composites provide extreme resistance to deformation and wear at high temperatures – typically an order of magnitude better than the nearest ceramic materials.

what's nano CBN(cubic boron nitride)?A multilayer coating is composed of two chemically different layered nanocrystalline materials, nanodiamond and nano-cubic boron nitride. The structure of the MLC and fabrication sequence of layered structure are

disclosed. The base layer is preferably nanoD and is the first deposited layer serving as an accommodation layer on a pretreated substrate. It can be designed with a larger thickness whereas subsequent alternate nano-cBN and nanoD layers are typically prepared with a thickness of 2 to 100 nm. The thickness of these layers can be engineered for a specific use. The deposition of the nano layer, by either cold or thermal plasma CVD, is preceded by diamond nucleation on a pretreated and/or precoated substrate, which has the capacity to accommodate the MLC and provides excellent adhesion. Nano-cBN layers are directly grown on nanodiamond crystallites using ion-assisted physical

vapor deposition (PVD)

Parameters of the four phase structure of boron nitride

structure of boron nitridehttp://what-is-nanotechnology.com/11CBN-PCBN-cubic-boron-nitride-powders-grits.htm（第 1／3 页）[2015-12-4 15:26:22]

what's CBN(cubic boron nitride) nano? where's PCBN (polycrystalline CBN) tools manufacturer? how to buy synthetic CBN single crystals(powders,grits or PCBN tips?

phase c-BN h-BN r-BN w-BN

structure sphalerite structure hexagonal structure Rrhombohedral structure wurtzite structure

Lattice constant(Å) a=3.615 d=1.565 a=2.5043

c=6.6661 a=2.2507 c=9.999 a=2.5505 c=4.213

density(g/cm3) 3.48 2.281 2.276 3.45

bonding mode sp3 hybridized sp2 hybridized sp2 hybridized sp3 hybridized

FTIR(cm-1) 783, 82,1367,1616 1065, 1380 1340 1090, 1120, 1230

Raman(cm-1) 52,1366 790,1367 1056,1304 950, 1015, 1050,1290

Total 4 structure of boron nitride

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Performance of nano/micro CBN particle coated tools in superfinish hard machining

Since nano/micro CBN particle coated tools are more cost-effective than solid polycrystalline CBN (PCBN) tools, a comprehensive study on the coated tools is required. This paper studies the performance of these tools in superfinish hard machining. Specimens were machined by a solid PCBN tool and CBN particle coated tools with two different CBN particle size distributions: less than 0.5 and 2 μm. The specimen machined by a tool with small CBN particle coating showed more compressive residual stresses and less thermal damage below the machined surface than other specimens. Furthermore, the specimen machined by a tool with small CBN particle showed less residual stress scatter than other specimens. The rolling contact fatigue life was predicted by using a rolling contact fatigue life model. The rolling contact fatigue life predictions indicate that the predicted life of the specimen machined by a tool with small CBN particle coating is longer than that of other specimens. The results thus indicate that a tool with small CBN particle coating provides better performance than other tools in superfinish hard machining.

Manufacturer and supplier of nano CBN(NCBN)we are an exporter including Abrasives. we can send good service for all of our customers all the world! We can also produce according to your requirement. Welcome your negotiated prices,we promise your good price will be our consideration. If you have any problems about details please contact us. top

© 2013 DFNano™All rights reserved! nanometals graphene nanopowders nano rare earth carbon nanotubes mesoporous carbon http://what-is-nanotechnology.com/11CBN-PCBN-cubic-boron-nitride-powders-grits.htm（第 2／3 页）[2015-12-4 15:26:23]

what's CBN(cubic boron nitride) nano? where's PCBN (polycrystalline CBN) tools manufacturer? how to buy synthetic CBN single crystals(powders,grits or PCBN tips?

nano hydroxyapatite nano diamonds nano CBN PCBN

http://what-is-nanotechnology.com/11CBN-PCBN-cubic-boron-nitride-powders-grits.htm（第 3／3 页）[2015-12-4 15:26:23]