Iron discs have been oxidised at 890℃on one side only,with the other side protected by an inert gas.The scale-metal adhesion was very good.Initially,scale-metal adhesion was maintained by the scale relaxing towards t...Iron discs have been oxidised at 890℃on one side only,with the other side protected by an inert gas.The scale-metal adhesion was very good.Initially,scale-metal adhesion was maintained by the scale relaxing towards the metal but after a time which depended upon the initial metal thickness,oxide relaxation ceased and the inert face moved towards the scale-metal interface.When the face which was normally inert was coveredwith a non-growing oxide layer,the scale-metal adhesion deteriorated.The results show that vacancies which were produced by oxidation were annihilated within the metal,that the inert face played a part and that the scale-metal interface is not a good sink for vacancies.展开更多
文摘Iron discs have been oxidised at 890℃on one side only,with the other side protected by an inert gas.The scale-metal adhesion was very good.Initially,scale-metal adhesion was maintained by the scale relaxing towards the metal but after a time which depended upon the initial metal thickness,oxide relaxation ceased and the inert face moved towards the scale-metal interface.When the face which was normally inert was coveredwith a non-growing oxide layer,the scale-metal adhesion deteriorated.The results show that vacancies which were produced by oxidation were annihilated within the metal,that the inert face played a part and that the scale-metal interface is not a good sink for vacancies.
