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Home Material Sciences Nanodiamonds in Energy And Resource Preserving Technologies

Nanodiamonds in Energy And Resource Preserving Technologies

Description

SINTA Ltd. has developed and is the patent holder of a production technology for nanodiamonds (ultra dispersive diamonds, UltraDiamonds, UDD) and some applied technologies – production of protector and restoration additives for lubricants and composite chrome and gold plating. The perspective of these technologies sees in large application opportunities for the nanodiamonds in various fields such as:

  • mechanical engineering,
  • manufacturing of tools (including new class of diamond tools),
  • production of grinding powders and pastes for super finishing of materials,
  • production of semiconductors,
  • production of lubricants, etc.

NANODIAMOND CHROMIUM ELECTROPLATINGS

The composite electroplating on the basis of chromium with NanoDiamonds are intended for hardening of details and instruments, increase of tear and wear resistant, protective and antifriction properties of the surface.Basic technological characteristics of the technology of nanodiamond chromium plating

  • Microhardness of the plating, HV, kg/mm –––––––––––––––––––––––– 1200-1400
  • Recommended plating width on the working detail surface, Micron –––– 5-20

Increase of the service life of the details 2-15 times with plating (increase of deterioration resistance of friction cluster details and instrument stability)

  • Increase of adhesion to the base, % –––––––––––––––––––––––––––– by 30-40
  • Catalyst charging, G/L ––––––––––––––––––––––––––––––––––––––– 7-10
  • 1kg of catalyst provides the total plating area
    ( if the plating width is 5 micron), thousand m2 ––––––––––––––––––– 2,5-3,0

NANODIAMOND PLATING EXAMPLES

Example A: Forming Mandrel for Stainless Steel Tubes

The customer (Nikopol Stainless Steel Tubes Factory) manufactures specialty stainless steel pipes for the nuclear and chemical industries. The process involves using a chrome plated 350 mm long mandrel being forced through smaller diameter stainless steel tubes to expand the diameter and decrease the wall thickness. The pipes are 10 meters in lengths.

The mandrel plating was modified to substitute a nanodiamond chromium plating for the previous chrome plating.

Effectiveness: The lifetime of the mandrels with the nanodiamond chromium plating is 4-5 times that of those with only chrome plating.

Example B: Cable Forming Dies

The customer (Uzhcable Factory) uses steel profiling dies as part of the process for producing large diameter cables. An alternative design was fabricated from a less expensive steel alloy. The profile areas (working surface) of the dies were selectively plated with a nanodiamond chromium plating 15 microns thick.

Effectiveness: The operational lifetime of the plated dies is 3.5 to 4.0 times the original design.

Innovative Aspect and Main Advantages

The technology nanodiamond chromium plating deriving is carried out on traditional equipment with minimum changes of production process of chromium-plating and provides material and electrical power saving at the expense of working width of plating decrease and current efficiency and productivity of galvanic lines increase, specific volume of metal waste per unit of plating area decrease.

Areas of Application

Nanodiamond chromium plating are a reliable way of improvement of the quality and competitiveness of cutting and manufacturing tools, press and punching tools, details of friction clusters (bearings, rods of hydrocylinders, piston rings, plungers etc.), medical equipment and other details and goods.


Fig. 1 Nanodiamond platings

Stage of Development

Already on the market, commercialized in Ukraine

Contact Details

Organization: SINTA Ltd
Address: 62404 Kharkiv, p/b Kulinichi Vulytsya 7, Gvardeyskoy Armiji, 3office 143
Contact person: Ruslan Tsyganok
Tel. + 38 (057) 740 37 88
Fax +38 (057) 740 33 95
E-Mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Website: www.nanodiamond.com.ua

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