Terfenol-D Rare Earth Giant Magnetostrictive Material in Shape of
A-ONE ALLOY supplys Terfenol-D in forms of round bar, square bar,
round plate, square pipe, tube, ring, laminated plates. Other forms
are available per customer requirements.
A-one Alloy has rich experience of supplying various Terfenol-D
Terfenol-D has the largest room temperature magnetostriction of any
known material. The name Terfenol originated from the metallic
elements, Terbium (TER) and Iron (FE); and the discovering
organization, Naval Ordnance Laboratory (NOL). Dysprosium (-D) was
added as an alloying addition later to reduce the magnetic fields
required to induce the magnetostrictive response.
Terfenol-D is an alloy comprised of Terbium, Dysprosium and Iron.
Terfenol-D is a solid-state material capable of converting energy
from one form to another. In the case of electrical-to-mechanical
conversion, the magnetostriction of the Terfenol-D generates
strains 100 times greater than traditional magnetostrictives, and
2-5 times greater than traditional piezoceramics. The material has
a high Curie temperature (380°C), which enables magnetostrictive
performance greater than 1000 ppm from room temperature to 200°C.
Adjustments in alloy composition can extend this range down to
As a material with multiple functions, it can be used in many
different fields. Till now, more than 1000 kinds of different
device have been developed, covering the fields of machine tool
industry, electronic industry, oil industry, textile industry,
aircraft and aerospace, agriculture as well as civil use. All these
development do active advances in the regarding industry areas. For
example, the use of the high power GMM transducer to treat the oil
well reduces the viscosity of oil therefore increases the output of
the oil greatly.
Available forms and sizes:
|Round bar||diameter 3~50mm, length≤200mm|
|Square bar||width 2~35mm, length 2~100mm|
|Ring||diameter 8~50mm, thickness 2~4mm, height 2~100mm|
|Round plate||diameter 4~50mmm, thickness≥1mm|
|Laminated round plates||diameter 10~50mm, length 5~100mm, min. laminated thickness 2mm|
|Powder||available per request|
Please contact A-ONE ALLOY for customized shapes.