The Hardide coating has a volume porosity of <0.05%, which is effectively pore-free, with no through porosity from 1μm of coating thickness. It contains no binder-phase such as cobalt or nickel. This allows the coating to protect substrates against corrosive and aggressive media including HCl, H2SO4, HF, H2S and molten metals.
Sulphide stress corrosion cracking is an issue for downhole tools as the natural gas and crude oil materials being processed often contain considerable amounts of H2S. Equipment that comes in contact with H2S environments can be rated for sour service with adherence to NACE MR0175/ISO 15156 for oil and gas production environments or NACE MR0103/ISO 17945 for oil and gas refining environments.
Hardide coated components perform extremely well in these environments, protecting the substrates of downhole tooling, preventing part failure, extending component life and reducing downtime.