Segregation across the metal/oxide interface occurring during oxidation at high temperatures of diluted iron based alloys

Surface composition modification of high-carbon low-alloy steels oxidized at high temperature in air

“…It also shows that the average concentration in nickel in the oxide layer of alloy C is higher than in the oxide layer of alloy B. This type of nickel behaviour has already been observed in other diluted alloys [7]. The increase of the copper concentration in steel modifies the distribution of nickel enrichment across the metal/oxide interface.…”

“…Thus, during their scientific investigations of the oxidation of steels in atmospheric oxygen, Stout and Aho noted a rise in the carbon concentration on the surface of their samples [59]. A mechanism was proposed to describe these results [7]. Indeed, the products of carbon oxidation have to escape into the atmosphere in order for the reaction to occur.…”

“…In previous studies have shown that the exposure of diluted ironbased alloys to high temperatures in air, for instance, leads to the formation of complex oxide scalings [5][6][7].…”

“…Studies carried out on binary alloys enable a better understanding of the phenomenon, but do not allow for predicting the surface composition of multi-component systems after elaboration. In fact, elements have complex interactions in alloys and their behaviour varies according to the system to which they belong [7]. This paper presents the analysis of metal/oxide interfaces performed on five steels produced in industrial conditions.…”

The effect of alloy compositions on the joint strength of carbon steels welded by the extended hot-rolling process

“…According to previous studies [10], a bandtype depletion zone of a specific element can occur along the interfaces between the scale and substrate surfaces. The respective microstructures of the joint interface and the region adjacent to the interface are both highly dependent on the microstructures and compositions of the alloying metals used [7].…”