Easy method to differentiate MnZn Ferrite and NiZn Ferrite

 

MnZn Ferrite – Manganese Zinc Ferrite (MXO) and NiZn Ferrite – Nickel Zinc Ferrite (NXO) are the most often utilised two series core components in the manufacturing of soft ferrite in the most species. We know that the output transformer U-core, deflection core, and transformer E-shaped core for the TV line are typically composed of manganese zinc ferrite material. There are manganese zinc zinc magnetic antennas for radio, but also from the rod end to discriminate between different hues. Some manufacturers, for example, put black paint on the rod side of manganese-zinc wave rods and red paint on the rod end of nickel-zinc short-wave bars. Furthermore, a variety of ring cores contain manganese zinc, nickel zinc points.

However, the smaller the size of the thread-shaped, cylindrical, shaped, and cap-shaped core, and some made of manganese material, and some made of nickel-zinc material, and Zi core and no colour, how to recognise it when these Core mixed together? Here are two specific methods.

Visual method for MnZn Ferrite and NiZn Ferrite

Because MnZn ferrite MXO has a relatively high general permeability and a large particle size, the structure is quite close and typically black. The typical permeability of NiZn-ferrite NXO is generally low, fine and tiny grains, and porous structure, frequently brown, especially during the production process when the sintering temperature is very apparent. We can identify using the visual technique based on these qualities.

1.) In bright light, if you notice the colour of black ferrite, a dazzling bright crystal, the core MnZn ferrite; if you see ferrite with brown, shining dull, grain This core is nickel zinc ferrite, which isn't particularly eye-catching. The visual approach is a rather crude method that, with work, may be mastered. 

If there are several components on the better, it is recommended to prepare a standard magnifying glass to compare. In clear daylight, using a magnifying lens, examine the ferrite with brown and glossy dull grain. If the grain is not brilliant, the magnetic element is nickel zinc ferrite.

Because MnZn ferrite MXO has a relatively high general permeability and a large particle size, the structure is fairly close and frequently black. The permeability of NiZn-ferrite NXO is frequently poor, with small and microscopic grains and a porous structure that is typically brown, particularly during the production process when the sintering temperature is quite evident. We may utilise the visual technique to identify depending on these characteristics.

2.) Water milling technique The water mill technique may be used to detect manganese zinc ferrite, which was black, and nickel zinc ferrite, which was brown, according to the concept of visual method. The method is to a magnetic component of the end surface, on more than 200 fine grinding wheel or whetstone on the water mill a few, and then according to the judge's judgement out. Method assessment using the visual method, i.e., black powder for manganese zinc ferrite and brown powder for nickel-zinc ferrite;

Measurement method for MnZn Ferrite and NiZn Ferrite

1.) To differentiate between manganese zinc and nickel zinc ferrite resistance, utilise different manganese zinc and nickel zinc ferrite resistivity. Because MnZn ferrite has a low resistivity, around 103 cm or less, whereas nickel zinc ferrite has a high resistivity, about 105 108 cm. As a result, we may use a high impedance metre or any other device to measure the resistivity.

Before the test, make two random spots on the core electrode for testing convenience, optional screw-shaped, cylindrical, the form of the core two cylinder end electrode, cap-shaped core optional in the same circular plane for the two. The general 6B pencil can be coated with two graphite electrodes, made of cylindrical core, the surface of the electrode, Cap-shaped core shown in the graphite electrode, DC voltage measured in tens of volts above the resistivity, and then coated with a good conductive material as the test electrode. After creating two graphite electrodes, a 500-type multimeter (with a range selector switch on the 10K file) may be used to test the resistance of the core to differentiate between manganese zinc and nickel zinc ferrite. The following have a general resistance of 150K MnZn; resistance is relatively substantial, multimeter pointer is basically the first fixed nickel-zinc ferrite.

2.) We can also distinguish between the utilisation of manganese zinc and nickel-zinc ferrite frequency f. Because the frequency of use of Mn-Zn ferrite material is often less than 2 MHz, its Q value is low; however, the frequency of use of nickel-zinc ferrite material is greater than 2 200 MHz, and its Q value is larger. We can use a ready-made high-frequency coil, the coil is not required to install the core, the inductance is less than 20H, first remove the core, and then test the ferrite cores were installed in QBG- Q table or other instruments with the same precision on the measured Q value, Q value for the high nickel zinc; Q value for the low (usually several times lower) manganese zinc.


When all of the following procedures are employed together, the judgement is more correct. 

At the moment, some manufacturers, in order to cut costs, zinc and zinc to zinc, magnesium and zinc are also applicable to high-frequency, so whether visually or tested, the high-frequency core components may not be nickel zinc, but magnesium zinc ferrite, which One point to bring attention to.

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Cosmo Ferrites Limited, one of the leading manufacturer and exporter of soft ferrites, was established in 1986 with its state of art manufacturing facility in the foothills of Himalaya.

We manufacture E cores, Toroidal core, ROD Core, POT Core, Planar Cores and other some more Soft Ferrites.

With our diverse product range, we interact closely with our customers as a Solution supplier, adhering to strict quality requirements and backed up by a well-connected distribution network and a 24 hour customer support service.