JPS58122702A - Method of producing voltage nonlinear resistor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Technical field of invention The present invention relates to a 1Jla method of voltage non-resistance.

Technical Background and Problems of the Invention The conventional method for manufacturing voltage non-WiIII resistors uses ZnO as the main component and Bi, O, , B, blO, , (
! oH0g.

MnO, Mu40. After adding a small amount of gold #1 cough compound such as #1 and molding it, it was fired at a temperature of 1,100 to 1,300°C to obtain a pongee. The region pressure non-TlLi111 resistor obtained in this way has excellent #i directivity,
It is conveniently used as a shaker for plants as T-ji 1-yaku P@Dakako. However, if it is conveniently used as an internal cost business for electricity AIII, 6
; has the following drawbacks: When a striking current is applied, the characteristics change greatly, and the non-linearity in the large current range is not sufficient, and it is smaller than the 42. The disadvantage is that the current range characteristics vary greatly! It had

By the way, the conventional method for controlling the #I resistance in the large current range is to diffuse sensitive Mut ions, Ga ions, In ions, etc. into the Ia axis in the ZnO crystal.

A so-called valence control method for lowering the specific resistance of ZnO is known. The components such as Mu4Gm and In are several to several hundred P.
Even small amounts of PM have an effect. However, the main component Z
nO and imW7. In the conventional method of sintering the sintering process, these ultra-trace amounts of Ga'Ga,
The xn component was not sufficiently bidispersed in the ZnOZnO crystal, and most of it was incorporated into the spinel crystal and grain boundary phase. This is thought to be the reason why it was not possible to sufficiently stabilize the small current range characteristics and the characteristics with respect to the current sensitivity.

In addition, even a slight change in the 1-coupling conditions will cause the 4Ga%I-component O
It is thought that the state of diffusion into the JZ*O crystal fluctuated, and this was the cause of the buffing of the characteristics between lofts.

Purpose of invention The present invention was made in view of these drawbacks.

It is an object of the present invention to provide a method for fabricating a non-mat antibody having tired large current range characteristics and impact current characteristics, and having a small voltage during buffing of small current range characteristics.

1llt11 of the invention The present invention is characterized in that, for example, an organic acid salt containing at least one type of Mu4 Ga or In (e.g. naphthenate, stearate) is warmed in advance with ZnO as the main component, and then this is heated. Other steel components (11, Os, Boo
The characteristics of this method include adding and mixing MnO, 0010 g, MnO, etc., molding the mixture, and then firing it.

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to two examples. First, the main components ZnO and the total amount of aluminum 7thenate were weighed, then butyl alcohol was added to this, mixed in a pot mill, and after drying,
Calcinate at 00℃. This was molded in a pot mill to which Bi, O, , 8b, O, , co, o, , MnO, etc. were added as sub-components of the pulverizer, and then this was placed in an electric furnace and heated at 12,500 to 2nr, and after cooling. Polishing was performed to obtain a sintered body of 45φ×22tm. Electrodes were attached by thermal spraying in the direction of polishing.

The nonlinearity in the large current range 1 of the 1M resistor obtained by C; It is expressed as the ratio (VIOKum/vllum) of the voltage (V1mm) when the voltage is applied. Also, the impact current characteristic is 8820μsIO! It was expressed as the rate of change in V1mm after applying 101 mm at 30 second intervals. Table 1 compares the embodiments of the present invention and the conventional example by lot numbering ・Table 1 also specifically shows the small current range characteristics of the inventive example and the conventional example (V1
The value t'100 of imi/V0.1m1) was compared, and the variation thereof was shown. SX* and Blood Power 1 etc. □As is obvious, large current range characteristics (VIOKνηlm),
Both the shock current characteristics (Δvl) and the small current range characteristics (v1mm/VO51) have been improved, and the variations in the characteristics between each loft are also small and the characteristics are well stabilized. There is. The reason for these improvements in properties and increased stability is thought to be that aluminum stearate and rim were pre-mixed and calcined with ZnO, allowing the components to diffuse sufficiently uniformly into the ZnO hem. .

Other embodiments of the invention: helmet, gallium stearate, indium stearate,
Similar results were obtained with aldenium naphthenate, gallium naphthenate, indicium naphthenate, and the like. In addition, naphthenate and stearate dissolve at low temperatures, so Z
Since the temperature for mixing and calcination with nO can be relatively low,
Z! It is extremely effective without impairing the sinterability of No. 10.

As described in detail of the invention, according to the present invention, large current area characteristics, impact current characteristics, and small current area characteristics are improved, and the characteristic fluctuations of each manufacturing loft (during buffing) are also small. kwIA resistor can be provided.

[Brief explanation of drawings]

The drawing is a comparative characteristic diagram showing variations in small current region characteristics of manufacturing lofts according to the conventional example and the present invention. (7317) Agent Patent Attorney Noriyuki Chika (and 1 others)
given name)

Claims (1)

[Claims] 1. Main component Zn0J: 1. An organic acid salt containing a small amount of Qa%In is added and heated, this mixture is calcined, and this calcined product contains Ili, O,, Bb, O as subcomponents.
, 0olO1, MnO, etc. are added and heated, the mixture is molded, and then fired. 2. The method for producing a voltage non-W wire resistor according to claim 1, wherein the ms salt is a stearate.