Magnequench has two state-of-the-art arc melters at the Tech Center, each capable of producing 300 grams of alloy ingots within minutes.
These furnaces are used to efficiently consolidate new chemical formulations, which are designed to target a certain set of magnetic and/or physical characteristics.
Following the arc melting of these alloy ingots, the material can be rapidly solidified in the Tech Center’s lab scale melt spinner. This operation transforms the alloy pieces into metallic ribbon.
Producing development-scale alloy batches enables us to react quickly to customer inquiries and requests.
Parameters such as wheel speed and melting temperature can be optimized for each particular alloy composition and this information can be related to large-scale production.
The development scale melt spinner allows us to rapidly produce and evaluate new powder compositions.
The alloy is melting in a crucible above a rapidly spinning wheel and then ejected on the wheel surface. Metallic ribbon is directed off the wheel into a collection chamber.
This ribbon can then be crushed into powder form and its magnetic properties evaluated. This melt spinner is capable of rapidly quenching 50-gram batches of alloy at any one time.
Vibrating Sample Magnetometer
We also have state-of-the-art analytical equipment at the Tech Center.
Our VSM (Vibrating Sample Magnetometer), for example, enables us to measure the demagnetization curve of a magnetic powder.
Values for Br, Hci, and (BH)max are obtained during the measurement, and the initial magnetization curve can also be measured.
When characterizing powders for high temperature applications, the VSM at the Tech Center can provide data from measurements up to 200 degrees C.
Additional analytical equipment includes an X-Ray Diffractiometer (XRD), which aids in the development of novel compositions and characterization of existing products.
The XRD is used to analyze the microstructure of powder, ribbon and alloy samples. Information such as crystal structure, composition and grain size can be determined to a high degree of accuracy within a few 10s of minutes.
The device is also useful for studying the dimensions of coating layers.