Structure and properties of steel coating ligated zirconium

Abstract

The paper presents experimental results on the structure and properties of coatings obtained while spraying a zirconium cathode and cathode steel 12X18H10T. The coatings were deposited in an atmosphere of nitrogen to the substrate 45. The coating of steel 12X18H10T + Zr in a nitrogen gas atmosphere has a high zirconium content of 3 times the iron content and the nitrogen content is 4. 12X18H10T + Zr coating in a gas atmosphere of argon and nitrogen have a columnar structure characteristic of single-phase films. To explain the observed structures are considered two mechanisms: the mechanism of concentration supercooling and the mechanism of propagation of dislocations due to the occurrence of thermal stresses in the coating. In the first step of coating thermal stresses do not have time to develop and the main role is making mechanism concentration supercooling, and in the second stage — both mechanisms.