Detonation spraying – Knowledge and References

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Basic Materials Engineering

Published in David A. Hansen, Robert B. Puyear, Materials Selection for Hydrocarbon and Chemical Plants, 2017

Some sprayed metal coatings, usually applied by the plasma spray method or by detonation spraying, have been successfully used to enhance resistance to erosion and wear. Be careful when loading these coatings in bending. They may be quite brittle and may readily disbond or spall if subjected to tension or impact loading. Thermal stresses, caused by rapid or nonuniform heating or cooling, also may disbond such coatings.

The wear resistance increasing of the deposited coatings of the Ni-Cr-B-Si system by modifying them with composite materials synthesized using the SHS process (Self-propagating high-temperature synthesis)

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Journal Information

Published in Welding International, 2019

S.A. Luzan, A.I. Sidashenko, A.S. Luzan

A new class of composite materials was developed for detonation spraying of protective coatings, consisting of a metal matrix and containing as a strengthening dispersed phase synthesized nanosized (grain size of about 15–40 nm) ceramic particles uniformly distributed in the volume. The scientific foundations have been developed for the production of multicomponent composites by the mechanochemical method: TiC + UDD + Ni-Cr, TiC + WC + Ni-Cr, TiB2 + WC + Ni-Cr, TiB2 + Cu, TiB2 + Ti-Ni, TiB2 + Ti-Al3 [8].