Mono-crystal Flake Nano-size Diamond
The mono-crystal flake nano-size diamond is a new type of nano diamond. Its morphology IS flake and with mono-crystal structure. The specific characterization is as follows:
Transmission Electron Microscopy (TEMD)
- D50/MEDIUM=147nm
- D50/MEDIUME95.9nm
- D50/MEDIUM-65.9nm
- D50/MIEDIUME=35.94 nm (this one is mixed size)
- D50/MED10M=18.5nm (mixed size)
TEM results show that the samples with D50/medium values of: 185 nm，147 nm，95.9 nm，65.9 nm and 35.94 nm are flakes, with good dispersion and uniform particle size.
SAED results show that the samples have Mono-crystal structure.
HRTEM results show that the samples have good crystallinity. The measured lattice spacing d is the same as that of diamond (111) surface d(111).
X-ray Diffraction (XRD)
XRD results of different particle sizes show that the diffraction peaks at 43.7. 75 and 91 match the(111), (220 )and (311)crystal planes of diamond phase, indicating that the phase composition of the material is diamond phase, and there are no other diffraction peaks at other positions, indicating that there are no other impurity phases and it has strong crystallinity.
Particle Size Distribution (SD)
D50=147nm
D50=95.9nm
D50=18.5nm
Sizes Available Now:
Note: Except for the five products above, we can also customize the production of non-standard products for customers
Zeta Potential and Particle size Analyzer
Fourier Transform Infrared Spectrometer (FTIR) Below FTIR spectra picture is for SCND-185nm:
We can also make the surface of nano diamond with different functional groups by surface modification, the results are as follows:
UV-vis DRS
Below figure shows the UV-vis DRS spectrum of SCND-147nm
UV-vis
13C MAS NMR
The results of MAS NMR show that the nano diamond only contains sp3 hybrid carbon, does not contain other types of carbon atoms.
Sample picture
Normally our nano diamond is supplied in the form of slurry/suspension, which can keep stable for a long time without precipitation;
But if needed we can also make dry powder, in this case when you use it the proper/correct dispersing process will be needed for a good dispersion.
Product application
The Mono-crystal flake nano synthetic diamond powder has good dispersion stability in water-based and oily systems, and the diameter thickness ratio (ratio of particle size to thickness of the sheet) is large, so it has good covering property. Meanwhile, it has excellent characteristics of stable chemical properties, acid and alkali resistance, it is not reactive with all acid substances at high temperature, so it is very suitable for corrosion resistant coating additives. In addition, the addition of nano diamond can improve the corrosion resistance of the whole coating, but also improve the mechanical properties of the whole coating, also can make the coating have self-cleaning effect, the water is not easy to attach to the coating, it will automatically fall off the coating in the form of water beads.
Application example 1: transparent wear-resistant coating
The amount of nano diamond added is 0.1%, the transmittance is about 83%, and the hardness is 7-8.
Application example 2: corrosion resistant coatings for aluminum and magnesium alloys
The thickness of the coating is 60 μ m for aluminum alloy substrate material and 80 μ m for magnesium alloy substrate material with the addition of 1% & 1.5% flake nano diamond. There is no corrosion spot after 60 days of salt spray pickling test (the reason why the corrosion resistance test is stopped is that it has met the customer’s requirements). Usually to get this effect the coating thickness is at least 200 microns, and the thickness of magnesium alloy anti-corrosion coating will be thicker than 200 microns. Adding flake like nano diamond can reduce the use of resin, improve the corrosion resistance and mechanical properties of the coating, and improve the comprehensive performance of the coating.
Application example 3: silver base material anticorrosion
The addition amount is of flake nano diamond 0.2%. After soaking in 1% Na2S solution for 37 days, the coating with nano diamond has almost no corrosion point, while the corrosion-resistant coating from the market has been completely corroded.
Application example 4: Deep sea corrosion resistance
The customer only provided experimental data, not experimental pictures.
The samples were immersed in 1500 meters deep sea for 2 years, and there were no corrosion spots, but only a few marine organisms on the surface of the samples. The surface of the samples was only sprayed with a thin layer of nano diamond coating, and no other coating was sprayed.
Application example 5: dispersion stability and spraying effect in epoxy resin
Flake nano diamond can be evenly dispersed into epoxy resin by only stirring, and the whole coating is smooth with high transmittance.
Application example 6: Dispersion in resin
The amount of nano diamond in the coating is about 1 ‰. from the optical microscope picture we can see that the flake nano diamond is evenly distributed in the coating.
The picture above shows the dispersion in oil-based epoxy resin, which can keep stable dispersion in epoxy resin for a long time.
Application example 7: Dispersion effect in ink
a:Pure ink b:0.1%ND-NH2
After surface amination, the flake nano diamond can be evenly dispersed into the ink and keep stable dispersion for a long time.
