Rare Earth Magnet Basics /Magnetic Evaluation Test
Shin-Etsu Chemical carries out a variety of magnetic property evaluation tests to suit the shape of magnet used, the temperature it is used at, etc.
| Measuring instrument | BH Tracer | VSM | Pulse Measurement Machine |
|---|---|---|---|
| Unit of measure | mm-cm | mm | mm-cm |
| Maximum magnetic field | Appx. 2.4MA/m (Appx. 30kOe) |
Appx. 1.2MA/m (Appx. 15kOe) |
Appx. 8MA/m (Appx. 100kOe) |
| Temperature measured | Room Temperature | from -150°C to 400°C |
Room Temperature |
In addition, various fluxmeters are used to measure surface flux.
Shin-Etsu Chemicals performs the following experiments to simulate actual use conditions testing magnetic materials, surface finish and adhesion characteristics for resistance to corrosion.
- High Temperature/Hi Humidity Test
Placement in a high temperature/high humidity environment for a specified time. - Heat Cycle Test
Cycle between low temperature and high temperature for a specified number of times. - Salt water spray test
Spray salt water for a specified period of time - Pressure cooker test (autoclave test)
Test subjecting the test pieces to a high-temperature, high-pressure space for a certain period of time - Sealed Tube Test
Placement in a sealed tube containing coolant and oil for a specified period of time. - Anti-hydrogen test
Placement at a specified temperature and pressure for a specified time.
Shin-Etsu Chemical carries out a variety of physical properties tests such as the following.
- Break Test
- Pressure Test
- Hardness Test
- Adhesive Strength Test
In addition, we are performing various tests based on customer request. Please inquire for further information.
