TW201132610A - Dielectric ceramic composition, method for preparing dielectric ceramic composition and electronic components - Google Patents

Abstract

The invention provides a dielectric ceramic composition, a method for preparing the dielectric ceramic composition and an electronic components. The dielectric ceramic composition includes a primary compound represented by a composition formula using (Ba.sub.xCa.sub.y)TiO.sub.3 and zinc oxide, wherein y in the composition formula is 0≤y≤0.08, and a total of x and y in the composition formula is 0.975≤x+y≤1.010. Relative to 100 parts by weight of the primary compound, the content of the foregoing zinc oxide is 2 to 12 parts by weight.

Description

201132610 VI. Description of the Invention: [Technical Field of the Invention] Dielectric Ceramic Combination The present invention relates to a method of preparing a dielectric ceramic composition and an electronic component. [Prior Art] 陶 : A Tauman capacitor which is an example of an electronic component is used for various electric powers, and in recent years, demands for high performance have become higher and higher. For example, the ceramic capacitors identified by the full standard are therefore subject to peak voltages due to the buffer circuit. Therefore, "=: the path does not cause the ceramic capacitor to be broken down, that is, it is most important to increase the dielectric breakdown electric field (ACVB) of the dielectric ceramic composition. An alternating current breakdown electric field Taman composition is disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. However, all of them are only about 5kV/_. SUMMARY OF THE INVENTION The present invention has been made in view of the present circumstances, and an object thereof is to provide a dielectric ceramic composition and a dielectric ceramic composition having a high AC breakdown electric field and a high dielectric constant, and low electrical phase loss, J Preparation method. Further, it is an object of the invention to provide an electronic component having a dielectric layer composed of such an electric ceramic composition. The inventors of the present invention have conducted intensive studies in order to achieve the above-mentioned results, and found that by making the dielectric ceramics & human & electric "beibei nets" the components of the composition are the components of the composition, 201132610 The present invention is achieved by the above-described object, and the dielectric ceramic composition according to the embodiment of the present invention which solves the above problems is a main component and zinc oxide having a composition formula of (BaxCay) Ti〇3. The dielectric ceramic composition, wherein y in the above composition formula is 0. 08, and the total of X and y in the above composition formula is 〇975Sx + ys 1. 〇1 〇, relative to the above main component j 〇〇 The content of the above-mentioned oxidized word is 2 parts by weight to 12 parts by weight. According to the present invention, a dielectric ceramic composition having an alternating breakdown electric field, a high dielectric constant, and a low dielectric loss can be provided. Further, an embodiment of the present invention The preparation method of the related dielectric Taman composition is a preparation method of a dielectric ceramic composition having a main component represented by a composition formula of (B"ay) Ti〇3 and zinc oxide, In the above, the y in the formula is 〇W〇. 〇8, and the total of X and y in the above composition formula is 〇. 9754+ ysl. 〇1〇, + 100 parts by weight of the above main component, The content of the zinc oxide is 1.6 parts by weight to 12 parts by weight, and the preparation method has the following steps: a step of calcining a raw material of the main component to obtain a calcined powder; and the above-mentioned calcined powder a step of adding a raw material of the above-mentioned oxidized word to a dielectric ceramic composition powder; and a step of forming and firing the powdered ceramic composition powder. 201132610 An electronic component according to an embodiment of the present invention has a dielectric layer composed of the above-mentioned dielectric ceramic composition or the dielectric material obtained by the above-described production method. The electronic component related to the embodiment of the present invention is not particularly limited. Listed as single-plate type ceramic capacitors and laminated ceramic capacitors. [Embodiment] _ Hereinafter, an embodiment of the present invention will be described based on an embodiment shown in the accompanying drawings. A ceramic capacitor 2. '2 FIG. 1 (Α), FIG. 2 shows a Tauman capacitor according to an embodiment of the present invention. 2 forming a structure having a dielectric layer 10, a pair of terminal electrodes 1 2, 1 4 formed on a surface opposite thereto, and lead terminals 6, 8 respectively connected to the terminal electrodes 2, n, which are protected by a resin 4 cover. The shape of the ceramic capacitor 2 can be appropriately determined according to the purpose and application, but it is preferable that the dielectric layer is formed into a disk-shaped disk-shaped capacitor. Further, the size thereof can be appropriately determined depending on the purpose and use, but usually the diameter is 5~ It is about 20 mm, preferably about 5 to 15 mm. (Dielectric Layer 10) The dielectric layer 10 is composed of a dielectric ceramic composition according to an embodiment of the present invention. The dielectric composition according to the embodiment of the present invention has a main component represented by a composition formula of dCay)Ti〇3 and zinc oxide, and y in the above composition formula is (IV) U8, and x in the above-mentioned formula The total of #y is 201132610 0.975$χ + ysi.〇1〇. The Χ table in the two IS formula... ratio, U. .咖,,,,,〇.930Sxq.〇〇〇. By this range, the B # dielectric constant tends to increase. The target a'a is selected as: Υ in the formula <=. The ratio is 〇.°8, excellent wearing Ray-Γ G7. By containing Ca in this range, there is a tendency to be sinterable and accommodating. In the present embodiment, Ca is an arbitrary blade. When the Ca is not contained, the AC breakdown electric field can be increased. In the above composition formula, the total of y, that is, the ratio of 与οΒ^ 〇-975&quot;+^-〇1〇^«^-930_&lt;x+y, the electric field fT enters the total of ^ a Υ The amount in this range 'has a tendency to improve sinterability, AC breakdown power %, and &quot; electrical constant. In the dielectric ceramic composition according to the embodiment of the present invention, the content of the oxidized word is preferably 2 parts by weight to 12 parts by weight, more preferably 2 parts by weight to 12 parts by weight, based on 1 part by weight of the main component. 2.3 parts by weight to 10 parts by weight 'further preferably 4 parts by weight to 1 part by weight. In the range of containing an oxidized word in this range, there is a tendency to have an alternating breakdown electric field and a dielectric constant, and the dielectric loss is lowered. In the dielectric ceramic composition according to the embodiment of the present invention, the amount of the oxidization, the iron oxide or the nickel oxide is preferably less than u parts by weight, more preferably the parts by weight. Weight: the second-step is preferably. &quot; parts. If the amount of yttrium oxide, iron oxide or oxidation: ^ exceeds the range, there is a tendency for the alternating breakdown electric field to decrease. Further, if the content of the oxidation record exceeds the range, then In addition, AC (4) (4)_, 201132610 has a tendency to increase dielectric loss. Zinc oxide is used as a "subcomponent". The thickness of the dielectric layer 1 is not particularly limited, but is preferably 〇3 to 2... Decisive d~2mm. By 傕Φ octave in this range, the thickness of the layer 10 can be used for medium pressure applications. (Terminal electrodes 12, 14) The terminal electrodes 12, 14 + are made of a conductive material. As a conductive material using 12, U, for example, '', for a terminal electrode "alloy, In-Ga alloy, etc.". Method for preparing Cu, Cu alloy, and Ag' ceramic capacitors The following describes a method for manufacturing a ceramic capacitor. First, a powder of the ceramic composition shown in Fig. j is formed after firing. The electric charge of the shell layer 10 The raw material of the main component and the raw material of the eighth layer are prepared, and the raw material of R π can be mentioned. As a raw material for forming an emulsion of H a, Ca, and Ti, or a composite material for forming an emulsion, or a composite oxide of R ΓΛ *, for example, BaC〇3 ' CaCCh, Ή〇 2 may be used. |. &amp;################################################################################# Therefore, the content can be appropriately changed to match the number of elements of the metal element. The raw material of the main knives can be prepared by a solid phase method, or can be prepared by a liquid phase method such as a granule, an oral method or an oxalate method, but it is preferably prepared by a solid phase method from the viewpoint of preparation. The raw materials of the respective subcomponents are not particularly limited, and various compounds such as carbonates, nitrates, and hydrogens may be formed from the above-mentioned respective subcomponents, emulsions, or composite oxides or by firing to form these oxides or complexes of 201132610 oxides. An oxide, an organometallic compound or the like is appropriately selected and used. In the method of preparing the dielectric ceramic composition according to the embodiment of the present invention, the raw material of the main component or the raw material of the main component is blended with the raw material of the subcomponent, and wet mixing is carried out using a ball mill or the like using cerium oxide balls or the like. When the subcomponent is blended at this time, each subcomponent may be blended, or only a part of the subcomponent may be blended, and the remaining subcomponent may be added after calcination to form the composition of the dielectric ceramic composition. The obtained mixture was granulated and molded, and the obtained molded product was subjected to calcination in an air atmosphere. Thus, a calcined powder was obtained. As the sinter condition, for example, the calcination temperature may preferably be 11 Torr to 13 (10). 5〜4小时。 C, more preferably 1150~1 250 C, the calcining time may preferably be 〇. 5~4 hours. Further, the raw material of the main component and the raw material of the subcomponent may be separately calcined and then mixed to form a dielectric ceramic composition powder. Next, the obtained sintered powder was coarsely pulverized. In the crucible, the subcomponent is added to form a composition of the above-mentioned dielectric:manner composition together with the raw material of the subcomponent added before calcination, but for the original # of zinc oxide, it is preferable to at least partially be a raw material of the main component. It is more preferable to add after the calcination, and it is more preferable to add all of the raw materials of the main component after calcination. Thus, the money breakdown electric field of the dielectric ceramic composition can be further improved, and the alternating breakdown electric field can be improved even if the amount of zinc oxide added is small. The raw material of the calcined powder or the calcined powder and the auxiliary component is passed through a ball mill or the like: wet-pulverized, further mixed and dried to obtain a dielectric ceramic: a composition powder. As described above, the preparation of the dielectric ceramic composition 201132610 powder by the solid phase method can achieve desired characteristics while at the same time reducing the production cost. Then, an appropriate amount of a binder is added to the obtained dielectric ceramic composition powder to carry out granulation, and the obtained granules are molded into a disk shape having a predetermined size to form a molded body. Then, the obtained molded body was fired to thereby obtain a sintered body of the dielectric ceramic composition. Further, the conditions for the firing are not particularly limited, but the holding temperature is preferably 4 12 GG to 1400 C, more preferably 1 250 to 1 35 (rc, preferably the firing atmosphere is air. In the sintering of the obtained dielectric ceramic composition) The printed terminal electrode 'on the main surface of the body is fired as needed, thereby forming the terminal electrode 12, and then 'bonding the terminal electrodes 12 and 14 to the lead terminals 6, 8 by soldering or the like', and finally covering the element body with the protective resin 4, Thus, the single-plate type ceramic capacitor shown in Fig. 1 (A) and Fig. 1 (β) is obtained. The ceramic capacitor of the present invention thus manufactured is mounted on a printed circuit board by lead terminals 6, 8 and the like, and is used for various kinds of electrons. The present invention has been described above with reference to the embodiments of the present invention, but the invention is not limited thereto, and the embodiments can be implemented in various different manners without departing from the spirit of the invention. For example, in the above embodiments, The electronic component according to the present invention has a single-plate type ceramic capacitor in which the dielectric layer is a single layer. However, the electronic component of the present invention is not limited to a single-plate type Tauman capacitor, and may be A laminated type capacitor produced by a usual printing method or a sheet method using a dielectric paste and an electrode paste having the above dielectric ceramic composition. A more specific description will be given by way of example: 201132610, but the following is based on the embodiment. The present invention is not limited to these examples. Samples 1 to 31, 3a are used as raw materials of the main components, and (10), (10) 3, and respectively, and 'weigh the prepared raw materials to form the composition shown in the sample 2 of Table i, respectively. Wet mixing is carried out by using a ball mill using pure water as a solvent and a ball: 匕 然后 然后 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' After the hourly calcination, the powder after the calcination was carried out by a crusher: after being crushed and sieved, it was weighed to form a composition shown in Table 1 and added with η wet pulverization. Thus, a dielectric ceramic compound powder having the composition of each of the samples (the respective compositions of the samples 1 to 31 and 3a) was obtained. The polyethylene was added in an amount of _ parts by weight relative to the obtained dielectric ceramic composition powder. 10 parts by weight of an aqueous solution, followed by granulation, and after sieving, the granulated powder obtained was obtained into a disk-shaped shape having a diameter of ΐ6·5_ and a thickness of J 1.2 mm under a pressure of 396 MPa. The green body was fired in the air at a temperature of 1,250 to 1,350 ° C for 2 hours to obtain a disk-shaped sintered body, and the electrode was coated on the @ surface of the main surface of the obtained sintered body, and further in the air. Medium, 65. = 2G minutes of sintering treatment, thereby obtaining a sample of a disk-shaped ceramic capacitor shown in Fig. i. The dielectric layer of the obtained capacitor sample is 1 mm thick, and the diameter of the sintered electrode is It is 丨2_. Moreover, for the obtained 201132610 capacitor samples, the alternating breakdown electric field, dielectric constant, and dielectric loss were evaluated by the following methods. The evaluation results are shown in Table i. (AC breakdown voltage (ACVB)) Measured under the breakdown voltage (ACVB) w· For capacitor samples, at both ends of the capacitor! . .交流 An alternating electric field is applied slowly, and the electric field value at the time of leakage current of 1_A is measured, and this is used as an alternating current breakdown electric field. Preferably, the electric field of the peach tooth is high. In this embodiment, 6·〇kv/龙 is good. (Dielectric constant U)) •. The dielectric constant ε was calculated as follows: For the capacitor sample, at the reference temperature of 2 〇C, the digit 1 (^ 4274A by AgUent) was used, the frequency was 丨 kHz, and the input signal level (measured voltage) was 1 · OVrms The electrostatic capacity is measured under the conditions, and the dielectric constant "no unit" is calculated from the electrostatic capacity. The dielectric constant is preferably high, and in the present embodiment, 2000 or more is good. (Dielectric loss (tan &lt; 5 )) • Dielectric loss For the capacitor sample 'at the reference temperature 2 (rc, using a digital LCR meter (Agilent Techn〇1〇gies, 4274A) at a frequency of 1 kHz, the input signal level (measured voltage) is 1. OVrms Preferably, the dielectric loss is small, and 3% or less in the present embodiment is good. 201132610 Table No. Main component (BaxCsvm〇3 ZnO i$ amount) AC breakdown 埸 介 軚 AC (ACVB) ίε ) [kV/mra] 1 介 Dielectric loss stew (tan ί) [ϊ] X y x+y 津1 0.930 0.06 0.990 0.0 ίο πω 1,6 * 2 0.930 0.06 0.990 1.5 £9 2272 1,5 3 D. 930 0.06 0.990 2.0 7.8 2213 ί'5 3a 0.930 0.06 0.990 13 8,0 2267 U5 4 0.93Q 0, 06 0.990 2.5 a.1 2340 L7 4a 0.930 0.06 0.990 4.0 8.3 2255 1.7 5 0.930 0.06 0,990 5.0 8.7 2206 1.7 6 0,930 006 D.990 7.D 6.2 2118 1.7 7 0,930 0.06 0.990 10,0 6.1 2027 1,8 8 0.93 D 0.06 D.990 12.0 6J 20D7 1,9 * 9 0.930 0.06 0.990 15.0 Μ 1S35 2'0 * 10 0.900 0.06 0.960 2.5 δ.5 1811 0.9 ! 11 0.915 0,06 0.975 2.5 8.0 2054 1.1 12 0.920 0.06 0.980 2.5 8.3 2112 Μ 13 0.925 0.06 om 2.5 8.1 2202 1.4 14 0,935 0.06 0.995 2.5 7J 2308 2.0 15 0.940 0.06 1.000 2.5 7,8 2287 2.1 16 0.950 0.06 1.010 25 6,9 2013 0.8 * 17 OMO 0,06 1.020 2.5 at J35&lt;TC Unfinished sintering 18 0.990 0.00 0.890 2.5 U 3104 ο.β 19 0.980 0.01 0.99D 2,5 7.0 3009 1.2 20 0.970 0.02 0.990 2,5 7.3 2954 η 21 om 0.03 0.990 2,5 6.2 2778 1'7 22 0.940 0.05 0.990 2.5 6-5 26Π 1.7 23 0.920 0.07 0.990 15 6,9 2475 1.6 24 0.08 0.990 2.5 7.0 2012 1.4 x 25 0.890 ato 0.990 2.5 6.8 1569 1.1 * 26 0.790 0.20 0.990 25 7.1 0J 27 0,980 0.00 0.980 2,5 6.5 2736 Oe 28 D.985 0.00 0.965 2.5 6.3 3W 1.0 29 0.995 0.00 0.995 2. 5 7.5 2734 0.8 30 1.000 0.00 1.000 2.5 6.3 2030 0.4 31 1.005 0.00 1.005 2,5 6.1 2005 0.4

A comparative example of the invention of the present application is shown. Samples 41 to 43 ZnO which was weighed in the amount of the composition shown in the samples 41 to 43 of Table 2 was calcined together with the main component raw material, and ZnO was not added after the calcination, and the molded body was obtained by 12 201132610. The firing temperature with the sample A 卜 9 π body is 125 (TC, except that the electric field is obtained by the electric field method to obtain the capacitor samples, the breakdown breakdown power %, the dielectric constant and the intervening pair are also in the main Eight words, and the evaluation of the knowledge, that is, Zn0 was added before the smoldering of the four media and the materials in the samples 41 to 3. The alternating breakdown voltage was measured for four samples... The electric field results are shown in Table 2. The sentence value. Composition and evaluation samples of each sample 41a~43a

In the preparation of the electric "Beita E composition powder", the main component of the simmered simmered simmered powder is subjected to the sample 41a to 43a of the coarse table 2 by a stone crusher, and then formed to be made from Shishan. The nicked amount of ZnO was added to the untwisted stellate, and the molded body was fired with a „0 &amp; system/sub-degree of 1 250t, and the capacitors were obtained in the same manner as the 叩1叩9. The sample was subjected to an alternating current breakdown electric field, a dielectric constant, and a dielectric loss. In the samples 41a to 43a, in the same manner as the samples 1 to 9, the main component was added after the simmering of the raw material. The breakdown electric field was obtained by enthalging the four samples, and the composition and evaluation results of each sample are shown in Table 2.

Sample ί&gt;. No Mainly into your BaxCey) Ti03 hcP: Heavy t parts] Addition of 2n0 of raw materials before calcination plus / after addition of X y x+y history &gt; counter-punching 碡CAGVB) JV/mnj 窀 constant ce) Η ( Tan i} DO 41 0.930 0.Q60 om 1·2' before adding 1iT^—42 αΜ〇0,060 0.990 ie before adding _ 7Λ ] 1654 M 43 0.930 0 fine 0.990 2.0 pre-loga 6.3 ] 1620 SJ 4U 0.930 0.060 0.990 1 .Γ Add ~ ___6,1 1593 JJ 0.930 0.060 0.990 ler '*~· 2259 15 43s 0.930 0.060 0.990 2.〇- 6·2 l 2272 U Sample Is~6s, Isa '7.8 I 2213 /.5 13 201132610 In the preparation of the dielectric ceramic composition powder, the calcined powder of the main component raw material was coarsely pulverized by a crusher and sieved, and then 211 was added to form the composition shown in the samples 15 to 63 and 153 of Table 3. 〇, 6丨2〇3, Zr〇2, Fe2〇3 or NiO, except that samples of each capacitor were obtained in the same manner as samples 1 to 9, respectively, for alternating breakdown electric field, dielectric constant and dielectric loss. The evaluation was carried out. The composition and evaluation results of each sample are shown in Table 3. Table 3 Sample No. Main component (&axCav)&quot;n〇3 Zr\〇 Ingredients alternating symplectic electric field dielectric constant 奄桢 奄桢 X X yx ten y ittm : 3⁄4 class [if price i {ACVB) (kV/nmj u) H (tani) 0.930 0.0B 0.390 ZS Bi203 2.0 M m 1.0 2s 0.930 0,06 0.990 2.5 Zr02 2.0 2641 1.2. 0,930 0.06 0.990 2.5 Fe2〇3 0.2 ±4 2340 1J 4s 0.930 o.oe 0.990 Z.5 Fe2〇3 2,0 a 2332 1,5 0.930 0.06 0.990 2.5 NtO 0.2 5J 2438 1,6 6s 0.930 0.06 0.990 2-5 NiO 2.0 M 2358 u Bsa t&gt;.m 0.06 0,990 2-0 Nb2〇5 CuO 2.3 0,1 2,5 7937 1,1 6sb 0,930 0.06 0,990 Nb2〇5 CuO 2.0 O.OB 3.2 6711 1.4 7s 0.930 0.0Θ 0,990 0.0 Bi2〇3 2,0 M im M 61; 0.930 0,06 0,990 0Λ Zr02 a? Ϊ3Μ 1.4 9s 0.930 0.0G 0.990 0.0 Zr02 20 £1 2284 U t£&gt; s O.S30 0.0.6 0.990 0,0 F^2〇3 0.2 M ms 0.9 11s 0.930 0,06 0.990 ao Fe203 2.0 M 377&amp; OB 12» 0.930 0.08 0.990 0.0 NiO 0,2 M mi U 13s 0.930 aoe 0,990 0.0 H\0 2,0 dJ 2007 1.0

Samples 6sa and 6sb were the same as samples 41 to 43 except that ZnO, Nb2〇5 or CuO, which was weighed in the composition shown in the samples 6 sa and 6 sb of Table 3, was calcined together with the main component raw materials. The capacitor samples were obtained in a manner to evaluate the AC breakdown electric field, dielectric constant and dielectric loss, respectively. The composition and evaluation results of each sample are shown in Table 3. 14 201132610 Samples 7s to 13s In addition to Zn〇, Bi2〇3, Zr〇2, 2〇3 or Ni〇 and main component materials are weighed to form the composition shown in samples 7s to 13s of Table 3. In the same manner as the samples 41 to 43, together with the calcination, each of the capacitor samples was evaluated for the respective sheet flow breakdown electric field, the number of electric frits, and the dielectric loss. The composition and evaluation results of each sample are shown in Table 3. From samples 1 to 9, 3a and 4a or 41 to 43, 41a to 43a, it was confirmed.

When the content of zinc oxide is 1.6 parts by weight to 12 parts by weight (samples 3 to 8, 3a, 4a, 42, 43, 42a, 43a) and the oxidized content is not in the above range (samples 1, 2, 9, and 41) Compared with 41a), the alternating breakdown electric field is increased, and when the content of zinc oxide is 2 parts by weight to 12 parts by weight, the alternating breakdown electric field is further increased. Further, it was confirmed that when the content of zinc oxide exceeds 12 parts by weight (sample 9), the dielectric constant is lowered. From the samples 10 to 17, it can be confirmed that the total of χ and y in the composition formula is O.975Q+01.O1O (samples u to 16) and the total of 乂 and y is less than 0. 9 7 5 (sample 1) 〇) The AC breakdown electric field is increased. Further, it was confirmed that when the total of χ and y exceeded 丨.0 ( (sample) 7), sintering was not completed at 丨35 〇 C. It is not preferable to make the firing temperature higher than 135 〇r in consideration of the influence on the productivity or the components of the furnace. From the samples 18 to 31, it was confirmed that y in the composition formula was 〇 〇〇 〇〇 8 (samples 18 to 2 4, 2 7 to 31) and y exceeded 〇 _ 〇 8 (samples 25 and 26). Compared to 'the dielectric constant increases. It can be confirmed from the samples 42, 43, 42a, 43a that the oxidation of the original component 15 201132610 after the smoldering (samples 42a, 43a) and

The raw material and the oxidized word - compared to the case of smoldering (samples 42, 43), six: the breakdown electric field is increased.乂/force L In addition, it can be confirmed from samples 41 to 43, 41a to 43a that the addition of an oxidized word after the material is burnt is compared with the case where the raw material of the main component is artificially burned together with human zinc, and the alternating current breakdown electric field rises. The high effect contains 1. 6 parts by weight or more of the oxidation time. ❿ It can be confirmed from the sample Is that the oxidation content exceeds 1 weight, the flow breakdown electric field and the dielectric constant decrease. It can be confirmed by the sample 2s and contains 2·. The oxygen per unit of oxygen, the six-current breakdown electric field is reduced. f In addition, it can be confirmed from the sample 3s and 杬 that when the 〇 2 to 2 weight iron is contained, the AC breakdown electric field is lowered. When the oxidation is confirmed by "5S, 6s, and contains 2 to 2 parts by weight of oxidation", the parental breakdown electric field is lowered and the dielectric loss is increased. ^ It can be confirmed from sample 6 and 6讣, yttrium oxide. When the content exceeds 2 weights and the copper content is (M parts by weight or more (sample (4), AC stroke: electric field decreases. Electric can be confirmed by sample 7s~13s, even if 7 of the composition of the main component is 0.08 And the cut is 〇.975&amp;+ 〇1〇, containing no zinc oxide and containing oxidized error, iron oxide or oxidation, the AC breakdown and dielectric constant are reduced, and the dielectric loss is increased. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 (A) is a front view of a ceramic capacitor according to an embodiment of the present invention. Fig. 1 (B) is a side sectional view showing a ceramic capacitor according to an embodiment of the present invention. 2 is a view showing the influence of the timing of adding zinc oxide and the content of osmium zinc oxide on the alternating breakdown electric field in the dielectric ceramics of the embodiment of the present invention. 】 • 2 ~ ceramic capacitors; 4 ~ protection Fats; 6,8~ lead terminals; ~ 10 dielectric layer; 12,14~ terminal electrodes.

17

Claims (1)

201132610 VII. Patent application scope: An electroceramic composition having a main component represented by a composition formula of (BaxCay) Tl〇3 and zinc oxide, and y in the above composition formula is 〇^〇 〇8, and the total of X and y in the above composition formula is 0. 975sx+yd. (π〇, the content of the above oxidized word is 2 parts by weight to 12 parts by weight relative to 1 part by weight of the above main component. 2. An electronic component having a dielectric layer composed of the electric ceramic composition according to claim 1. The method for preparing a dielectric ceramic composition, the dielectric ceramic (Baxcay) The composition of Ti〇3 represents the main component and zinc oxide, and the enthalpy in the above composition formula is 〇.〇8, and the total of χ and y in the above composition formula is 〇.975sx+yq 〇 1〇, • the above-mentioned oxidation amount is 1.6 parts by weight to 12 parts by weight based on 1 part by weight of the main component; wherein the preparation method has the following steps: calcining the raw material of the main component Powdered a step of adding the raw material of the zinc oxide to the calcined powder to obtain a dielectric Taman composition powder, and a step of molding and firing the dielectric ceramic composition powder. It has a dielectric constituting a composition prepared by the preparation method described in claim 3 of claim 3, 201132610