Nickel powder. Grades, chemical composition.
General Characteristics
Nickel powder is produced by electrolysis of aqueous solutions of nickel salts followed by drying in a reducing atmosphere. The carbonyl method of nickel powder production involves obtaining nickel carbonyl and then decomposing it. The finely dispersed nickel contains an impurity of a number of elements. With the help of plasma spraying it is applied to GTE elements, for the production of battery plates. It is also used to restore parts. Sprayed coatings increase the wear resistance of the parts.
Grades of nickel powders
Nickel powder PNK (nickel carbonyl nickel powder) is produced by carbonyl method. PNE nickel powder is produced by electrolysis. Ultra-dispersed nickel powder is made by preorder, since the production process is quite labor-intensive. The finest powder, nickel powder, is included in special ceramics, construction mixtures and special heat insulation. Self-fluxing or granulated nickel powder applied by gas-powder surfacing increases the strength of parts… When choosing a powder, one should consider the size of particles, whether they will comply with GOST or made to special order.
Characteristics of electrolytic nickel powders
| Powder grade | dcd/dm — average distribution diameter, μm * | ≤45 | 45÷71 | ≥71 | g/cm3 *** |
|---|---|---|---|---|---|
| А 2 | (19,6±4,0)/(17,5±4,0) | 90ё93 | 7÷10 | --- | 1,4÷1,6 |
| AEII-BT | (27,4±4,0)/(26,4±4,0) | 80ё90 | 10÷20 | --- | 1,6÷1,8 |
| PNE-1 | (32,0±5,0)/(30,0±5,0) | ≥30 | ≤66 | ≤4 | 3,0÷4,0 |
| PNE-1 «LUX» | (42,0±5,0)/(40,0±5,0) | 30÷45 | 51÷66 | ≤4 | 3,0÷4,0 |
* — determined by sedimentation method
** — determined by the method of sieve analysis
*** — determined by the BET method.
Chemical composition of electrolytic nickel powders PNE-1 «LUX», PNE-1, AE-II-BT
| % wt. | C | Fe | Co | Si | Cu | S | O |
|---|---|---|---|---|---|---|---|
| 99,5 | 0,02 | 0,1 | 0,2 | 0,03 | 0,06 | 0,008 | 0,1 |
Chemical composition of electrolytic nickel powder of А-2 grade
| % wt. | Cu | Fe | Al | Mg | Si | Sn | Mn | Pb |
|---|---|---|---|---|---|---|---|---|
| 99 | 0,05 | 0,05 | 0,005 | 0,01 | 0,006 | 0,005 | 0,005 | 0,005 |
| 99 | Zn | Cr | Sb | Ca | S | C | O | moisture |
| 99 | 0,005 | 0,005 | 0,001 | 0,02 | 0,008 | 0,1 | 0,5 | 0,3 |
Sedimentation data
| d, μm | 0÷10 | 10÷20 | 20÷30 | 30÷40 | 40÷50 | 50÷60 | 60÷70 | 70÷80 |
|---|---|---|---|---|---|---|---|---|
| А-2 | 21,01 | 31,4 | 14,75 | 5,93 | 1,87 | - | - | - |
| AEII-BT | 5,4 | 25,32 | 34,09 | 21,43 | 9,62 | 3,01 | 0,79 | |
| PNE-1 | 5,92 | 17,67 | 19,83 | 18,18 | 16,59 | 11,35 | 7,33 | 3,13 |
| PNE-1 «LUX» | 1,51 | 5,62 | 11,8 | 23,55 | 24,33 | 17,44 | 13,44 | 2,31 |
Buy at the best price
Evek GmbH stocks a wide range of high quality metal powders at optimal prices. Nickel powder is supplied both in wholesale and retail quantities. Products have quality certificate of compliance with the requirements of standards and specifications. The manufacturer, powder grade, chemical composition and properties are marked in the certificate. The implementation of orders takes minimal time. For wholesale customers there are preferential discounts.