Thermal Diffusion

MetaBoid is a hybrid thermo-chemical process based on our proprietary chemical vapor diffusion technology. The surface layer of components are enriched with ions capable of forming compounds with the carbide forming elements in the base material in order to improve the mechanical properties of the component surface.

No quenching is needed to attain the hardness therefore the MetaBoid process produces relatively lower distortion levels compared to other case hardening processes.

MetaBoid results in a very hard case on the surface of the component. Surface hardness reaches 1400 HV even in low carbon steel and even 2800 HV in alloy steels. MetaBoid also reduces the coefficient of friction between the processed component and bare metal component by up to 50%.

Metaboid Applications
  • Gears: This is useful in the case hardening of gears and similar components which are subject to a great deal of wear in hostile environments. The surface of the gear teeth needs to be extremely hard so that they can withstand constant metal-to-metal contact, without undue wear. The underlying material needs to be tough so that the teeth can tolerate occasional impact loads, without the risk of fracture.
  • Ball Valve: This is useful in the case of ball valves where absolute sealing is required to prevent the leakage of fluids. Ball valves using stellite coatings typically last only 10,000 cycles whereas ball valves with MetaBoid coating last upward of 50,000-100,000 cycles depending on the coating thickness or a minimum 10 times longer than bare metal valves. MetaBoid can replace HVOF tungsten carbide coatings and does not require grinding.
  • Glass: In galss, sticking of material to the mould reduces the efficiency of production. MetaBoid enhances the durability of these tools by up to 3.6 times and prevents the sticking of molten glass to metal die. MetaBoid coated components maintain wear resistance, chemical attack resistance and temperature degradation resistance required for glass tooling industry. The mould may be made from alloy steel, Inconel or even hot working tool steels. MetaBoid technology would improve the efficiency of the industry.
  • Petrochemical and Pumping Industry: Petrochemical and pumping industry faces enormous amount of wear and tear in corrosive and erosive conditions in the sour gas condition. Fine sand, H2S gas and slurry erodes the pumping infrastructure and reduces the pump head and discharge capacity.
  • Arms and Weapons Industry: MetaBoid can also be used in arms and weapons industry. MetaBoid is a suitable alternative for hard chrome plating technology. MetaBoid is 35X more resistant to abrasive wear compared to hard chrome as per ASTM G65 standard. Tank continious track, Mine clearing tools, suspension bushes, drive sprockets, gun barrels and many more components can be benefitted by using MetaBoid coating technology.
  • Power Generation Industry: Shafts, sleeves, bushes, oil pump gears, and many other components used in power generation industry can also benefit from the use of MetaBoid coating. Turbine blades made of stainless steel and Inconel can attain 5x increase in surface hardness and 2.5X increase in service temperature. This would result in fewer maintenance shutdowns.

Why Diffuson?

At Diffuson Coatech LLP, MetaBoid is utilized to confer robustness resembling the hardness and wear resistance found in powder metallurgy tool steel onto more economical steels, which may lack hardening capabilities due to their chemical composition. Additionally, it achieves corrosion resistance comparable to SS430. Notably, MetaBoid exhibits outstanding resistance to acidic corrosion, showcasing nearly 15 times lower mass loss after an 8-hour exposure to 20% HCl.

Contact us for your Metaboid requirements. Our technical team would support your needs and requirements.

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