The manufacture of samarium cobalt alloys via the co-reduction of an oxide mix is a specialised process yielding very fine-grained high performance alloy powders. Co-reduction has now become the industry standard for SmCo5 production; the capability of this process also extends to the manufacture of Sm2Co17 powders, where the product type can provide significantly improved processing performance for customers.
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| Compositions and Purity |
| (Weight %) |
SmCo5 |
Sm2Co17 |
| Sm |
33.0 - 42.0 |
24.0 - 30.0 |
| Fe |
|
14.0 - 19.0 |
| Cu |
|
4.0 - 8.0 |
| Zr |
|
1.5 - 3.5 |
| Co |
Balance |
Balance |
| Calcium |
<0.15 |
<0.15 |
| Nickel |
<0.20 |
<0.20 |
| Iron |
<0.20 |
|
| Aluminium |
<0.05 |
<0.05 |
| Silicon |
<0.05 |
<0.05 |
| Magnesium |
<0.03 |
<0.03 |
| Boron |
<0.0005 |
<0.0005 |
| Oxygen |
<0.30 |
<0.30 |
| Carbon |
<0.030 |
<0.060 |
Individual compositions are usually set by the end-user, with alloys manufactured and supplied to specifications agreed between LCM and the customer.
Alloying additions
Praseodymium and Gadolinium are common rare-earth additions to these Sm-Co based alloy systems.
Form
A dark grey powder, particle size 100% <300µm
Quantity
Batch sizes range from 200kg to 2000kg
Packaging
Inner:
Vacuum-Sealed multilayer aluminised laminate packs. This packaging provides excellent shelf life with protection from oxygen and humidity.
Outer:
UN Steel drums 50-100kg net weight
Quality assurance
Production processes are part of our quality management system – certified to ISO9001: 2000 standard. Each batch is supplied with a Certificate of Conformance detailing the results from full chemical analysis and, if required, powder size distribution.
