Linear zinc oxide ceramic resistor, method for manufacturing the same, and circuit board

By coating a conductive paste and applying a DC bias during the preparation of zinc oxide ceramic resistors, the preparation process is simplified, the sintering temperature is reduced, and the linear characteristics and high current density of zinc oxide ceramic resistors are achieved, making them suitable for modern power equipment.

CN116386967BActive Publication Date: 2026-02-06GUANGDONG POWER GRID CO LTD +1
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Patent Information

Application Number
CN202310440268.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-23
Publication Date
2026-02-06
Estimated Expiration
2043-04-23

AI Technical Summary

Technical Problem

The existing technology for preparing zinc oxide linear ceramic resistors is complex, the doping amount is difficult to control, and the sintering temperature is high and the energy consumption is large.

Method used

The zinc oxide ceramic formula is mixed, ball-milled, dried, granulated, pressed, and debinded. After coating with a high-temperature conductive paste, it is heated and sintered. During the cooling process, a DC bias voltage is applied to form a DC electric field, which interferes with defects and electron arrangement at the grain boundaries and destroys the grain boundary barrier.

Benefits of technology

The preparation process of zinc oxide ceramic resistors has been simplified, the sintering temperature has been reduced, and good linearity and high current density have been achieved, making them suitable for modern power equipment.

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Abstract

The application belongs to the technical field of ceramic resistance, and particularly relates to a linear zinc oxide ceramic resistance, a preparation method thereof and a circuit board. The linear zinc oxide ceramic resistance is prepared by applying a direct current voltage in a preparation process, so that a crystal boundary barrier formed in a sintering process is destroyed, the product, the zinc oxide ceramic resistance, has good linear characteristics, and thus the linear zinc oxide ceramic resistance is prepared, thereby solving the technical problem that a process for preparing the zinc oxide linear ceramic resistance is relatively complex in the prior art.
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