摘要 |
A process for producing phosphorus-containing iron powder involves heating a mixture of finely divided carbonyl iron and elemental phosphorus and pulverising the product. Preferably, a mixture of 70-99 wt.% finely divided carbonyl iron powder and 1-30 wt.% red phosphorus is heated at above 300 degrees C in an inert gas atmosphere. Also claimed is a phosphorus-containing iron powder of less than 10 mu mean particle diameter, containing 0.1-80 wt.% P, less than 1 wt.% C, less than 1 wt.% N, less than 0.5 wt.% H and less than 0.1 wt.% total of other impurity elements except oxygen. |
申请人 |
BASF AG, 67063 LUDWIGSHAFEN, DE |
发明人 |
LEUTNER, BERND, DR., 67227 FRANKENTHAL, DE;FRIEDRICH, GABRIELE, DR., 67061 LUDWIGSHAFEN, DE;SCHLEGEL, REINHOLD, 67454 HASLOCH, DE |