FIELD: powder metallurgy, namely manufacture of cermet silver containing electric contact parts designed for electromagnetic starters and other low-voltage apparatuses.
SUBSTANCE: method comprises steps of preparing charge by chemical co-deposition of finely dispersed mixture of silver and cadmium oxide from solution of silver and cadmium nitrates; annealing in air; pelletizing; reducing in hydrogen; coating pellets with pure silver; pressing; inner oxidizing; sintering; sizing; annealing. Pellets are coated with silver due to adding to charge finely dispersed silver with particle size 1 - 2 micrometers.
EFFECT: enhanced ductility and switching wear resistance.
2 cl, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MAKING CONTACT PARTS FROM COMPOSITIONS OF SILVER AND CADMIUM OXIDE | 2002 |
|
RU2236327C2 |
| METHOD OF MANUFACTURING SILVER-CADMIUM OXIDE ELECTRIC CONTACTS | 1994 |
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RU2082800C1 |
| METHOD OF MANUFACTURE OF ELECTRICAL CONTACTS BASED ON SILVER WITH CADMIUM OXIDE | 1989 |
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| METHOD FOR MAKING CHARGE OF CONTACTS OF ARGENTUM-GRAPHITE COMPOSITIONS | 2002 |
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| METHOD FOR PRODUCTION OF SILVER-CADMIUM OXIDE POWDER AND SILVER-CADMIUM OXIDE POWDER PRODUCED BY SPECIFIED METHOD | 2007 |
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| METHOD FOR OBTAINING LIGHT-ABSORBING CERAMICS | 2022 |
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| MIXTURE FOR PRECOAT OF POWDER SILVER-CONTAINING BIMETALLIC ELECTRIC CONTACTS | 1987 |
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SU1471888A1 |
| METHOD FOR PRODUCING ELECTRIC CONTACT FROM COMPOUND OF SILVER AND ZINC OXIDE | 2000 |
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RU2159970C1 |
