Magnetic Characterization of a 3D-Printed Fe-Si Ring

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Magnetic Characterization of a 3D-Printed Fe-Si Ring

Background

A university research team developing additively manufactured soft magnetic materials required comprehensive magnetic characterization of a 3D-printed Fe-3.5Si ring. The objective was to evaluate the material's magnetic behavior under both DC and AC excitation and generate reliable performance data for research validation and material optimization. The evaluation was required to comply with internationally recognized magnetic testing practices referenced in ASTM A733 and ASTM A927, covering B-H characteristics and core loss performance across multiple operating frequencies and magnetic flux densities.

Testing Approach

At Alfa Chemistry, magnetic characterization was performed under controlled laboratory conditions using dedicated soft magnetic testing systems. To ensure data reliability and repeatability, each test condition was measured through multiple test cycles before the final results were verified.

The testing programme included:

  • DC magnetic characterization to establish the material's B-H curve under static excitation.
  • AC magnetic characterization at 50 Hz and 100 Hz to evaluate magnetic response under alternating fields.
  • Core loss evaluation across frequencies from 50 Hz to 1000 Hz at magnetic flux densities of 0.5 T, 1.0 T, and 1.5 T, providing performance data over representative operating conditions.

Testing was mainly conducted using the AMK-200K-S AC/DC Hysteresisgraph for Soft Magnetic Materials and MATS-2010SD Soft Magnetic DC Measuring Device.

Results & Key Findings

Comprehensive magnetic characterization successfully generated the required performance data across both static and dynamic magnetic fields. Key observations included:

  • DC B-H characterization established the fundamental magnetization behavior of the Fe-3.5Si ring, providing reference data for evaluating magnetic permeability and saturation characteristics.
  • AC B-H curves showed a stable magnetic response under low-frequency alternating fields, providing data on the material's behavior under dynamic magnetic conditions.
  • Core loss measurements quantified the material's energy dissipation under varying operating conditions. As expected, losses increased progressively with both excitation frequency and magnetic flux density, providing valuable information for application-specific material assessment.

Supporting Data (Selected)

Fig. 1. B-H Curve of sample (left: 50Hz; right: 100Hz)

Value Delivered to the Client

The testing provided the university research team with standardized magnetic performance data necessary to evaluate the electromagnetic behavior of its 3D-printed Fe-3.5Si material. The results enabled direct comparison with existing magnetic materials, supported validation of the additive manufacturing process, and supplied high-quality experimental data for ongoing research, simulation, and potential scientific publication.

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Whether you are developing additively manufactured magnetic materials, evaluating soft magnetic alloys, or validating component performance against international standards, our laboratories provide accurate, independent magnetic characterization tailored to your application.

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