Carbon-coated iron nanopowder as a sintering aid for water-atomized iron powder.

ABSTRACT: The paper examines the influence of carbon coating on iron nanopowder used as a sintering aid for water-atomized iron powder. Iron nanopowder without such a coating was used as a reference sintering aid to isolate the influence of the carbon coating. Both nanopowder variants were characterised using XPS and HRTEM. The results showed a core-shell structure for both variants. The iron nanopowder is covered by a 3-4 nm thick iron oxide layer, while the carbon-coated iron nanopowder is encapsulated with several nanometric carbon layers. Thermogravimetry conducted in a pure hydrogen environment shows a multipeak behaviour for the carbon-coated iron nanopowder, while a single peak behaviour is observed for the iron nanopowder. Two types of micro/nanobimodal powders were obtained by mixing the na

SUBMITTER: Manchili SK 

PROVIDER: S-EPMC9596440 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature