نوع مقاله : مقاله پژوهشی
نویسندگان
1 پژوهشکده فیزیک و شتابگرها، پژوهشگاه علوم و فنون هستهای، صندوق پستی: 3486-11365، تهران ـ ایران
2 پژوهشکده پلاسما و گداخت هستهای، پژوهشگاه علوم و فنون هستهای، صندوق پستی: 51113-14399، تهران- ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
Nuclear reaction analysis (NRA) is a powerful method for the characterization of light elements in heavy matrix. The capability of this method to determine carbon in iron-based substrates was studied. The systematic error of this method was estimated to be 6%. It was found that the sensitivity of the method for determining carbon in the metal substrates is 0.05% by weight. Three different standard samples of which have specific carbon content, were used to measure carbon in the bulk substrate. The difference between measured and actual carbon of standard samples is within the method error spread and less than 6% reported. To determine the depth profile, carbonized steel-304L samples by the DC plasma method in two various substrate temperatures were used. The effect of the substrate temperature on the formation of the carbon layer and its depth profile was studied. The formation of Fe3C layer in the depth of the carbon samples under the 385 °C has been determined using the NRA method and confirmed with other SEM and XRD methods.
کلیدواژهها English