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| In many instances the use of master
alloys is the most effective way of introducing controlled
levels of rare earth metal to more complex alloy
systems. The principal reason for adding rare earth
metals in this way, is due to the very high oxidation
potential of RE metals and a good master alloy
will control oxygen content and will stabilise metals
that would normally oxidise in the atmosphere. |
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The use of a master alloy delivers the benefits of improved yields, together
with extremely precise and reproducible rare earth additions. LCM master alloys
are used in the manufacture of corrosion resistant steels, high temperature alloys
and various specialised systems. For individual applications LCM engineers are
able to advise on the most suitable master alloy composition.
Common Master Alloy Systems:
Infinite
combinations can be considered.
| Rare
Earth |
|
Non-Rare
Earth |
Yttrium
Lanthanum
Cerium
Cerium mischmetal
Praseodymium
Neodymium
Samarium
Gadolinium
Terbium
Dysprosium |
alloyed with |
Iron
Cobalt
Nickel
Copper
Aluminium |
Individual compositions are set by the customer, often with technical assistance
from LCM engineers to define the most suitable system based on end-use.
Please refer to the phase diagrams in the ‘Technical’ section
of our website.
Form
Material is routinely supplied in the form of cast ingot or ingot pieces with
piece size varying according to customer requirements.
Quantity
Typical batch sizes for master alloys range from 50kg to 2000kg
Packaging
Packaging varies depending on the nature of the master alloy. In general LCM
will recommend suitable systems for approval by the customer.
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 chemical analysis results according to the specification agreed
between LCM and the customer. |
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ISO9001:2000
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