| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to fabrication of metal coating, particularly, molybdenum on metal powders by thermal decomposition of hexa-carbonyl of molybdenum in medium of hydrogen sulphide and can be used for fabrication of anti-friction disperse-strengthened composite materials on base of polymer particles. The procedure for application of molybdenum particles on metal powders consists in application of coating by thermal dissociation of vapours of molybdenum hexa-carbonyl. Also, the main layer of applied coating consists of mixture of hexa-carbonyl of molybdenum and mono-oxide of carbon in volume ratio of vapours 1: 5 at 200C, whereupon produced layer is saturated with disulphide of molybdenum made of mixture of products of thermal dissociation of hexa-carbonyl of molybdenum and hydrogen sulphide in volume ratio of vapours 1: 2 at temperature 400C. ^ EFFECT: fabrication of molybdenum coating on metal powders efficient in optimal operational combination of values of hardness, wear resistance and heat resistance of composite materials facilitating increased service life of parts of friction pairs made out of given composites. ^ 2 tbl, 1 ex |
