2001 Volume 19 Issue 2 Pages 263-268
The reactive thermal spraying is expected as the reasonable process of fabricating the sublimable particle dispersed coatings. The purpose of the present study is to develop the coating by the reactive spraying which is superior in the wear-resistance to Cu-alloy coating. For this purpose, both Cu-alloy/Ti pre-mixed and mechanically alloyed composite powder were sprayed to fabricate the titanium nitride dispersed coating by the reactive spraying and the wear characteristics of the coatings were evaluated.
The results obtained are summarized as follows.
1) It was found that the titanium nitride dispersed coating can be made by the reactive spraying of pre-mixed powder. The amount of nitride phase could be controlled by the deposition rate.
2) The wear-resistance of the nitride dispersed coating was superior to that of Cu-alloy coating and improved with the dispersed particle content.
3) The titanium nitride phase was formed by the reactive plasma spraying of MA powder. The finer and more homogeneously dispersed composite coatings were established by using the MA powder.
4) The coating made from MA powder was superior in wear-resistance to that made from the pre-mixed powder.
