FIELD: powder metallurgy.
SUBSTANCE: parts of devices protecting against radioactive emission or electric contacts are proposed to be manufactured from tungsten/copper pseudoalloy. Tungsten powder is mixed with binder containing 0.5-1.5% colophony and 0.05-0.15% ammonium formate or citrate. Resulting mixture is compacted and resulting porous blanc is brought into contact with copper. The total is thermally treated by gradually raising temperature: first in vacuum to remove binder and to melt copper and then in argon atmosphere to 1360-1410оС.
EFFECT: increased wettability and uniformity of impregnation, and eliminated explosive risk due to excluded use of hydrogen.
3 cl, 1 tbl, 10 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MANUFACTURE OF SINTERED POROUS PRODUCTS FROM TUNGSTEN-BASED PSEUDOALLOY | 2016 |
|
RU2623566C1 |
| METHOD OF PRODUCING SINTERED POROUS TUNGSTEN-BASED ARTICLES | 2009 |
|
RU2414329C1 |
| METHOD OF PRODUCING SINTERED POROUS ARTICLES FROM TUNGSTEN-BASE PSEUDOALLOY | 2010 |
|
RU2444418C1 |
| HIGH TEMPERATURE METAL-CERAMIC COMPOSITE | 2008 |
|
RU2389814C2 |
| MANUFACTURING METHOD OF PRODUCTS BASED ON TUNGSTEN-COPPER AND MOLYBDENUM-COPPER PSEUDOALLOYS | 2011 |
|
RU2460610C1 |
| METHOD OF MAKING ARTICLES FROM TUNGSTEN-COPPER PSEUDO ALLOYS | 2015 |
|
RU2607478C1 |
| METHOD OF MANUFACTURE OF PRODUCTS FROM PSEUDO-ALLOYS MOLYBDEN-COPPER | 2016 |
|
RU2628233C1 |
| METHOD OF OBTAINING OF ULTRADISPERSED POWDER OF COMPLEX TUNGSTEN AND TITANIUM CARBIDE | 2014 |
|
RU2562296C1 |
| METHOD FOR PRODUCING COMPOSITE MATERIAL ON THE BASE OF TUNGSTEN/COPPER PSEUDO ALLOY | 1993 |
|
RU2043861C1 |
| METHOD OF MAKING OF COMPOSITE MATERIAL - PSEUDOALLOY | 2014 |
|
RU2556154C1 |
