An experimental study on preparation of WC-Co coatings with the explodings wires technique

After the principle of exploding wires was studied,the experiments to prepare coatings of ultrafine crystaline WCCo horniness alloys have been carried out with an authors made exploding wires device in vacuum or ambient environment.The maximum micro hardness of the WCCo coatings is up to Hv=2190,i.e. 1.4 times of the samples without coatings.A transition layer between the coating and the substrate surface has been found,which has a microstructure different from both of the coating and the substrate.The micro hardness,microstructure,its composition and bound strength of the coatings are analyzed in detail.