JPH08208324A - Tool material for firing - Google Patents

Tool material for firing

Info

Publication number
JPH08208324A
JPH08208324A JP7032974A JP3297495A JPH08208324A JP H08208324 A JPH08208324 A JP H08208324A JP 7032974 A JP7032974 A JP 7032974A JP 3297495 A JP3297495 A JP 3297495A JP H08208324 A JPH08208324 A JP H08208324A
Authority
JP
Japan
Prior art keywords
ferrite
firing
tool material
weight
setter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7032974A
Other languages
Japanese (ja)
Inventor
Taiji Okiyama
泰治 沖山
Shoji Shibata
昭司 柴田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coorstek KK
Original Assignee
Toshiba Ceramics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Ceramics Co Ltd filed Critical Toshiba Ceramics Co Ltd
Priority to JP7032974A priority Critical patent/JPH08208324A/en
Publication of JPH08208324A publication Critical patent/JPH08208324A/en
Pending legal-status Critical Current

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  • Compositions Of Oxide Ceramics (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE: To improve reaction resistance and durability and to reduce the production cost of a tool material for firing of a soft ferrite compsn. having a spinel structure by using a material containing MgO.Al2 O3 as the main component and ZrO2 as the subcomponent. CONSTITUTION: This tool material contains 85-99.5wt.% MgO.Al2 O3 as the main component and 0.5-15wt.% ZrO2 as the sub component. Compared to a tool material comprising alumina or alumina-mullite, the obtd. material causes no irregular shrinkage in the ferrite nor such a problem that SiO2 reacts with the ferrite to damage the crystal of the ferrite and to deteriorate the characteristics of the ferrite. Since the obtd. material contains ZrO2 , it is excellent in durability and inexpensive compared with a material comprising zirconia or magnesia. Since the obtd. material contains one or more elements of the metal elements which are present in the soft ferrite having a spinel structure, and since the material contains <=5wt.% compsn. of the same spinel structure as the ferrite, no influence of movement of the component from the ferrite to the tool material is caused, which means any pretreatment is not necessary.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、電子部品等に用いられ
るスピネル型構造を有するソフトフェライト成形物を焼
成する際に、被焼成物であるフェライトを載置するため
に用いられるセッター、または棚板、サヤの表面を被覆
するためのコ−ト材等の焼成用道具材に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a setter or shelf used for placing ferrite, which is an object to be fired, when firing a soft ferrite molded product having a spinel type structure used for electronic parts and the like. The present invention relates to a firing tool material such as a coating material for coating the surface of a plate or a sheath.

【0002】[0002]

【従来技術】電子部品等に用いられるスピネル型構造を
有するソフトフェライトは、一般的には棚板上あるいは
サヤ内に配置されたセッター上に積載され、焼成処理が
行われる。この焼成処理は通常1200〜1400℃の
高温で行われるため、焼成炉からの出し入れの際、セッ
ターに急激な温度変化が生じる。しかも、前記セッター
は繰返し使用され、この急激な温度変化が繰返しセッタ
ーに加わため、熱衝撃、熱疲労によって、亀裂あるいは
割れ等がセッターに発生することがある。そのため、セ
ッターの材質として、耐熱衝撃熱疲労性が要求されてい
る。
2. Description of the Related Art Soft ferrite having a spinel structure used for electronic parts or the like is generally loaded on a shelf plate or a setter arranged in a sheath and subjected to a firing treatment. Since this firing treatment is usually performed at a high temperature of 1200 to 1400 ° C., a rapid temperature change occurs in the setter when the container is taken in and out of the firing furnace. Moreover, since the setter is repeatedly used and the rapid temperature change is repeatedly applied to the setter, cracks or fractures may occur in the setter due to thermal shock or thermal fatigue. Therefore, thermal shock and thermal fatigue resistance is required as a material for the setter.

【0003】また、フェライトは反応性の高い材料であ
るため、焼成炉において焼成する場合、セッターと被焼
成物であるフェライトとが反応し、フェライトの特性を
低下させたり、あるいはセッターと被焼成物であるフェ
ライトとが融着することがある。そのため、セッターの
材質として、フェライトと反応し難い耐反応性が要求さ
れている。
Further, since ferrite is a highly reactive material, when fired in a firing furnace, the setter reacts with the ferrite to be fired to reduce the characteristics of the ferrite, or the setter and fired material. May be fused with ferrite. Therefore, as a material for the setter, it is required that the setter has resistance to reaction that is hard to react with ferrite.

【0004】また、セッターを用いることなく、所定の
コ−ト材を被覆した棚板あるいはサヤにフェライトを直
接載置し、フェライトの焼成を行うことがある。このコ
−ト材もセッターと同様に、耐熱衝撃熱疲労性、耐反応
性が要求されている。これらの要求に応じて、従来の焼
成用道具材にあっては、アルミナ質、アルミナ−ムライ
ト質、ジルコニア質、マグネシア質等の材質のものが用
いられている。
In some cases, ferrite is directly placed on a shelf or a sheath coated with a predetermined coating material without using a setter to fire the ferrite. Similar to the setter, this coat material is required to have thermal shock resistance, thermal fatigue resistance and reaction resistance. In response to these requirements, conventional firing tool materials made of alumina, alumina-mullite, zirconia, magnesia, etc. are used.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、アルミ
ナ質、アルミナ−ムライト質から形成される焼成用道具
材の場合、フェライトに収縮むらを発生させ易く、また
アルミナ中に不純物として存在するSiO2 がフェライ
トと反応してフェライトの結晶を崩してしまい、透磁率
等のフェライト特性を低下させてしまうという技術的課
題がある。そのため、焼成用道具材に用いられるアルミ
ナ質はSiO2 を含まない高純度のアルミナ質である必
要がある。一方、ジルコニア質から形成される焼成用道
具材の場合、フェライトとは反応し難く、耐久性に優れ
ているが、高価であるため製造コストがかかるという技
術的課題がある。また、マグネシア質から形成される焼
成用道具材の場合、ジルコニア質の焼成用道具材と比べ
ると安価ではあるが、耐久性に劣るという技術的課題が
ある。
However, in the case of a burning tool material formed of alumina or alumina-mullite, it is easy to cause uneven contraction in ferrite, and SiO 2 present as an impurity in alumina is ferrite. There is a technical problem that the crystal of ferrite is destroyed by reacting with and the ferrite characteristics such as magnetic permeability are deteriorated. Therefore, the alumina material used for the firing tool material needs to be high-purity alumina material that does not contain SiO 2 . On the other hand, in the case of a firing tool material formed of zirconia, it is difficult to react with ferrite and has excellent durability, but there is a technical problem that the manufacturing cost is high because it is expensive. Further, a firing tool material formed of magnesia is less expensive than a zirconia firing tool material, but has a technical problem of poor durability.

【0006】本発明は上記課題を解決するためになされ
たものであり、耐反応性、耐久性に優れ、安価な焼成用
道具材を提供することを目的とするものである。
The present invention has been made to solve the above problems, and an object of the present invention is to provide an inexpensive tool material for firing which is excellent in reaction resistance and durability.

【0007】[0007]

【課題を解決するための手段】上記課題を解決するため
になされた本発明にかかる焼成用道具材は、85〜9
9.5重量%のMgO・Al23 を主成分として含有
し、0.5〜15重量%のZrO2 を副成分として含有
してなることを特徴とする。また、85〜99.5重量
%のMgO・Al23 を主成分として含有し、0.5
〜15重量%のZrO2 を副成分として含有し、かつフ
ェライト中に存在する金属元素のうち少なくとも1種以
上の元素を含みかつフェライトと同じスピネル構造を有
する組成物を5重量%以下含有してなることを特徴とす
る。
The firing tool material according to the present invention made to solve the above problems is 85 to 9
It is characterized by containing 9.5% by weight of MgO.Al 2 O 3 as a main component and containing 0.5 to 15% by weight of ZrO 2 as an auxiliary component. Further, it contains 85 to 99.5% by weight of MgO.Al 2 O 3 as a main component,
Containing 15% by weight to 15% by weight of ZrO 2 as an auxiliary component, and containing 5% by weight or less of a composition having at least one kind of metal element present in ferrite and having the same spinel structure as ferrite. It is characterized by

【0008】[0008]

【作用】本発明にかかる焼成用道具材は、85〜99.
5重量%のMgO・Al23を主成分として含有し、
0.5〜15重量%のZrO2 を副成分として含有して
なるため、アルミナ質、アルミナ−ムライト質から形成
された焼成用道具材と比較して、フェライトに収縮むら
を発生させることはなく、またSiO2 がフェライトと
反応してフェライトの結晶を崩し、透磁率等のフェライ
ト特性を低下させることもない。しかも、ZrO2
0.5〜15重量%含むため、内部組織の焼結が進み、
耐熱衝撃性、耐熱疲労性等の耐久性に優れている。一
方、ジルコニア質あるいはマグネシア質から形成される
焼成用道具材と比較しても、安価で耐久性に優れてい
る。
The working tool material according to the present invention is 85-99.
Contains 5% by weight of MgO.Al 2 O 3 as a main component,
Since it contains 0.5 to 15% by weight of ZrO 2 as an accessory component, it does not cause uneven shrinkage in ferrite, as compared with a firing tool material formed of alumina or alumina-mullite. In addition, SiO 2 does not react with ferrite to break down the ferrite crystal, and the ferrite characteristics such as magnetic permeability are not deteriorated. Moreover, since ZrO 2 is contained in an amount of 0.5 to 15% by weight, sintering of the internal structure proceeds,
Excellent durability such as thermal shock resistance and thermal fatigue resistance. On the other hand, it is inexpensive and excellent in durability as compared with a firing tool material formed of zirconia or magnesia.

【0009】また、フェライトの特性は焼成中の雰囲気
あるいは、フェライトから道具材への成分移動の影響を
受けやすいため、焼成用道具材を使用する場合、一般的
に炉の雰囲気あるいは焼成するフェライトになじませる
ため、予めフェライトに含まれる成分を道具材に浸み込
ませておく前工程を必要とする。しかし、本発明にかか
る焼成用道具材にあっては、85〜99.5重量%のM
gO・Al23 を主成分として含有し、0.5〜15
重量%のZrO2 を副成分として含有し、かつスピネル
型構造を有するソフトフェライト中に存在する金属元素
のうちの少なくとも1種以上の元素を含み、かつフェラ
イトと同じスピネル型構造を有する組成物を5重量%以
下含有してなるため、前工程を行うことなくただちに使
用しても、焼成用道具材がフェライト中の成分を奪うこ
となく、従ってフェライトの結晶構造をくずすことなく
所定のフェライトの特性をうることができる。しかも、
金属元素組成物が5重量%以下であるため、セッターの
成形等に影響を与えることはなく、含まない場合と同様
な方法よりセッターを製造することができる。
Further, since the characteristics of ferrite are easily affected by the atmosphere during firing or the transfer of components from the ferrite to the tool material, when the tool material for firing is used, it is generally the atmosphere of the furnace or the ferrite to be fired. In order to adapt it, it requires a pre-process in which the components contained in the ferrite are soaked in the tool material in advance. However, in the firing tool material according to the present invention, M of 85 to 99.5% by weight is used.
0.5 to 15 containing gO.Al 2 O 3 as a main component
A composition containing at least one kind of metal element present in a soft ferrite having a spinel structure and containing ZrO 2 in an amount of wt% as an accessory component and having the same spinel structure as ferrite Since it contains 5% by weight or less, even if it is used immediately without performing a pre-process, the firing tool material does not deprive the components of the ferrite, and therefore the crystal structure of the ferrite is not destroyed, and the desired ferrite characteristics are maintained. You can get Moreover,
Since the metal element composition is 5% by weight or less, it does not affect the molding of the setter and the like, and the setter can be manufactured by the same method as in the case where it is not contained.

【0010】[0010]

【実施例】以下、本発明の焼成用道具材として、セッタ
ーを用いた場合における実施例の比較試験を行った。 実験例1 まず、実施例として、表1に示されるMgO・Al2
3 及びZrO2 の含有率を変えた4種類のセッターを用
い、また比較例として、MgO・Al23 、MgO、
ZrO2 の含有率を変えた6種類のセッターを用いて比
較試験を行った。尚、これらのセッターは従来と同様、
成形後、焼成することにより作製したものである。この
比較試験では前記セッターを棚板上に配置し、その上に
フェライトを積載した後、焼成炉内に挿入し、前記焼成
炉内を1300℃〜1380℃の高温で加熱し、フェラ
イトの焼成を繰り返し行い、耐反応性、耐久性について
評価を行った。また参考のために、原材料費及び歩留り
等を考慮した、製造に要するコスト性の評価も行った。
その評価は◎は優れている、○は良い、△は劣る、×は
かなり劣っているの4段階で行った。その結果を表1に
示す。
[Examples] A comparative test of Examples using a setter as a firing tool material of the present invention was conducted below. Experimental Example 1 First, as an example, MgO.Al 2 O shown in Table 1 was used.
4 kinds of setters having different contents of 3 and ZrO 2 are used, and as comparative examples, MgO.Al 2 O 3 , MgO,
A comparative test was conducted using six types of setters having different ZrO 2 contents. These setters are the same as before.
It is produced by firing after molding. In this comparative test, the setter was placed on a shelf, ferrite was loaded on the shelf, and the ferrite was loaded into the firing furnace. The firing furnace was heated at a high temperature of 1300 ° C to 1380 ° C to fire the ferrite. Repeatedly, the reaction resistance and durability were evaluated. For reference, the cost performance required for manufacturing was also evaluated in consideration of raw material cost and yield.
The evaluation was carried out in four stages: ⊚ is excellent, ◯ is good, Δ is inferior, and X is considerably inferior. Table 1 shows the results.

【0011】[0011]

【表1】 [Table 1]

【0012】表1から明らかなように、耐反応性につい
ては実施例No.1及び実施例No.2が優れ、比較例
No.1が劣り、その他はほぼ同程度であり、良いとい
う評価であった。尚、良いという評価の実施例のNo.
3、4及び比較例No.2乃至6のセッターは使用上特
に問題となる反応性を示すものではない。したがって、
耐反応性については、比較例No.1を除き、各実施例
及び各比較例は所期の耐反応性の効果を発揮するもので
あることが認められた。
As is clear from Table 1, the reaction resistance of Example No. 1 and Example No. 1 2 is excellent and Comparative Example No. 1 was inferior, and the others were about the same level, and were evaluated as good. In addition, No. of the example of the evaluation of good.
3, 4 and Comparative Example No. The setters Nos. 2 to 6 do not show reactivity which is a problem in use. Therefore,
Regarding the reaction resistance, Comparative Example No. It was confirmed that each Example and each Comparative Example except for 1 exhibited the desired effect of reaction resistance.

【0013】次に、耐久性について、実施例No.2が
優れ、比較例No.3の場合と比較すると3〜5倍以上
寿命が長く、十分効果を発揮するものである。また、比
較例No.3、4は耐久性がかなり劣り、比較例No.
1、2、5、6は耐久性が劣り、これらのセッターを使
用することに問題があることが認められた。比較例N
o.2、3、4、5、6からわかるように、MgO・A
23 が75重量%以下になると耐久性が劣るように
なること、及び実施例No.1、2、3、4からわかる
ように、MgO・Al23 が85重量%以上になると
耐久性が良くなることが認められた。ただし、比較例1
のようにMgO・Al23 が100重量%になると耐
久性が劣ることも認められた。したがって、MgO・A
23 が85重量%以上99.5重量%以下含まれて
いるのが好ましい。
Next, regarding durability, Example No. 2 is excellent and Comparative Example No. Compared with the case of 3, the life is 3 to 5 times longer, and the effect is sufficiently exhibited. Also, in Comparative Example No. Nos. 3 and 4 were considerably inferior in durability, and Comparative Example Nos.
It was confirmed that Nos. 1, 2, 5, and 6 were inferior in durability and there was a problem in using these setters. Comparative Example N
o. As can be seen from 2, 3, 4, 5, and 6, MgO · A
When the L 2 O 3 content is 75% by weight or less, the durability becomes inferior. As can be seen from 1, 2, 3, and 4, it was confirmed that the durability was improved when MgO.Al 2 O 3 was 85% by weight or more. However, Comparative Example 1
It was also confirmed that the durability was inferior when MgO.Al 2 O 3 was 100% by weight. Therefore, MgO · A
It is preferable that the content of l 2 O 3 is 85% by weight or more and 99.5% by weight or less.

【0014】更に、ZrO2 の添加量が比較例No.
2、No.6に示されるように、25重量%以上あるい
は比較例No.1、No.3に示されるように、0.5
重量%以下になると耐久性が低下することが認められ
た。好ましくは、実施例No.1乃至No.4に示すよ
うに、0.5重量%乃至15重量%が良いことがわか
る。次に、原材料費及び歩留り等を考慮したコスト性に
ついて検討すると、MgO、ZrO2 の原料費が高価な
ため、また、これら単独の組成の場合の歩留りが低いた
め、比較例No.2はかなり高価となり、比較例No.
3も高価となる。以上、耐反応性、耐久性、コスト性を
総合的に判断すると、実施例No.1、2が優れている
ことがわかる。
Further, the addition amount of ZrO 2 was set to Comparative Example No.
2, No. As shown in No. 6, 25% by weight or more or Comparative Example No. 1, No. As shown in 3, 0.5
It was confirmed that the durability was deteriorated when the content was less than or equal to weight%. Preferably, Example No. 1 to No. As shown in FIG. 4, it is found that 0.5% by weight to 15% by weight is preferable. Next, when the cost performance in consideration of the raw material cost and the yield and the like is examined, the raw material cost of MgO and ZrO 2 is high, and the yield in the case of these single compositions is low. 2 is considerably expensive, and Comparative Example No.
3 is also expensive. As described above, when the reaction resistance, durability, and cost performance are comprehensively judged, the example No. It can be seen that 1 and 2 are excellent.

【0015】次に、MgO・Al23 と、ZrO2
と、スピネル型構造を有するソフトフェライト中に存在
する金属元素であるZnで組成されるスピネル型構造の
ZnO・Al23 とからなるセッターについて、比較
試験を行った。 実験例2 この実験例2では、まず実験例1で総合的に優れていた
実施例No.2のZrO2 の含有量である10重量%に
ZrO2 の含有量を固定し、MgO・Al23 とZn
O・Al23 の含有率を変えた6種類の焼成用セッタ
ーを用いた。尚、これらのセッターについても従来と同
様、成形後、焼成することにより作製される。この比較
試験ではセッターを棚板上に配置し、その上にフェライ
トを積載した後、焼成炉内に挿入し、前記焼成炉内を1
300℃〜1380℃の高温で加熱し、フェライトの焼
成を繰り返し行い、耐久性、セッター使用初期でのフェ
ライト特性の変化、セッター製造上の問題点について評
価を行った。
Next, MgO.Al 2 O 3 and ZrO 2
And a setter of ZnO.Al 2 O 3 having a spinel structure composed of Zn, which is a metal element present in soft ferrite having a spinel structure, was subjected to a comparative test. Experimental Example 2 In the experimental example 2, first, the experimental example No. 1, which was excellent in the overall experimental example 1, was used. The content of ZrO 2 is fixed to 10 wt%; and a content of ZrO 2 of 2, MgO · Al 2 O 3 and Zn
Six types of sintering setters having different contents of O · Al 2 O 3 were used. Incidentally, these setters are also produced by molding and firing as in the conventional case. In this comparative test, a setter is placed on a shelf board, ferrite is loaded on the shelf board, and then the setter is inserted into the firing furnace to set the inside of the firing furnace to 1
It was heated at a high temperature of 300 ° C. to 1380 ° C. and the firing of ferrite was repeated to evaluate durability, changes in ferrite characteristics at the initial stage of use of the setter, and problems in the production of the setter.

【0016】ここで、セッター使用初期でのフェライト
特性の変化とは前述した前工程が施されていないセッタ
ーを使用し、焼成後のフェライトの透磁率等のフェライ
ト特性を測定し、フェライト特性の優劣を評価したもの
である。またセッターを製造上の問題点とは、成形の容
易性、セッターを焼成する焼成炉への影響度合いを評価
したものである。尚、表2において使用している記号
は、◎は優れている、○は良い、△は劣る、×はかなり
劣っていることを示している。
Here, the change in the ferrite characteristics at the initial stage of use of the setter means the use of a setter which has not been subjected to the above-mentioned previous steps, and the ferrite characteristics such as the magnetic permeability of the ferrite after firing are measured to determine whether the ferrite characteristics are excellent or poor. Is evaluated. Further, the problem in manufacturing the setter is that the ease of molding and the degree of influence on the firing furnace for firing the setter are evaluated. The symbols used in Table 2 indicate that ⊚ is excellent, ◯ is good, Δ is inferior, and x is considerably inferior.

【0017】[0017]

【表2】 [Table 2]

【0018】表2より、実施例と比較例とを比較検討す
る。比較例No.7とNo.8の結果から明らかなよう
に、ZnO・Al23 を5重量%以上添加混合してい
るセッタ−では耐久性が著しく低下し、また成形が困難
であったり、セッターの焼成炉に悪影響を及ぼす等の解
決が困難な製造上の問題も発生することが認められた。
一方、実施例No.5乃至No.7は、耐久性に関して
は共に優れ、しかも実施例No.6とNo.7にはフェ
ライト中に存在する金属元素を含むスピネル型構造のZ
nO・Al23 を添加混合されているため、セッター
が焼成中のフェライト中の成分を奪うことがなく、前工
程が施されていないセッターであっても、その使用初期
段階において、十分なフェライト特性を得ることができ
ることが認められた。実施例No.8にもZnO・Al
23 が添加混合されているため、実施例No.7ほど
ではないが耐久性が向上している。なお、この実施例で
はスピネル型構造を有するソフトフェライト中に存在す
る金属元素と同元素で組成されるスピネル型組成物とし
て、ZnO・Al23 を用いたが、特にこれに限定さ
れるものではなく、CuO・Al23 等であってもよ
い。
From Table 2, the examples and the comparative examples are compared and examined. Comparative Example No. 7 and No. As is clear from the results of No. 8, the durability of the setter containing ZnO.Al 2 O 3 added in an amount of 5% by weight or more is remarkably deteriorated, molding is difficult, and the sintering furnace of the setter is adversely affected. It was confirmed that manufacturing problems that are difficult to solve, such as exerting problems, also occur.
On the other hand, Example No. 5 to No. No. 7 is excellent in durability as well as Example No. 7 6 and No. 7 is Z of spinel type structure containing metallic elements present in ferrite
Since nO.Al 2 O 3 is added and mixed, the setter does not take away the components in the ferrite during firing, and even if the setter is not subjected to the previous process, it is sufficient at the initial stage of its use. It was recognized that ferrite properties could be obtained. Example No. ZnO / Al in 8
2 O 3 was added and mixed. The durability is improved, though not as much as 7. In this example, ZnO.Al 2 O 3 was used as the spinel type composition composed of the same metal element as that present in the soft ferrite having the spinel type structure, but the invention is not particularly limited to this. Instead, it may be CuO.Al 2 O 3 or the like.

【0019】更に、上記実施例には示していないが、本
発明に係る焼成用セッターを用いてソフトフェライトの
1種であるHighμ材料を焼成物とした場合において
も、耐反応性に優れた効果を奏する。
Further, although not shown in the above examples, even when a high-μ material, which is one kind of soft ferrite, is used as a fired product by using the firing setter according to the present invention, an effect excellent in reaction resistance is obtained. Play.

【0020】[0020]

【発明の効果】本発明に係る焼成用道具材は、MgO・
Al23 85〜99.5重量%と、ZrO2 0.5〜
15重量%とを含有するため、アルミナ質、アルミナ−
ムライト質から形成される焼成用道具材と比較すると、
本発明に係る焼成用道具材は耐反応性に優れている。ま
た、ジルコニア質あるいはマグネシア質から形成される
焼成用道具材と比較すると、安価で耐久性を有する焼成
用道具材を得ることができる。以上のように、本発明の
焼成用道具材は、アルミナ質、アルミナ−ムライト質、
ジルコニア質、マグネシア質から形成される従来の焼成
用道具材と比べて、耐反応性、耐久性、コスト性におい
て、総合的に優れている。
The tool material for firing according to the present invention is MgO.
Al 2 O 3 85 to 99.5 wt% and ZrO 2 0.5 to
Since it contains 15% by weight, alumina, alumina-
Compared with firing tool materials formed from mullite,
The firing tool material according to the present invention has excellent reaction resistance. Further, as compared with a firing tool material formed of zirconia or magnesia, it is possible to obtain an inexpensive and durable firing tool material. As described above, the firing tool material of the present invention includes alumina, alumina-mullite,
Compared to the conventional firing tool materials made of zirconia and magnesia, it is overall superior in reaction resistance, durability, and cost.

【0021】また、MgO・Al23 85〜99.5
重量%と、ZrO2 0.5〜15重量%と、フェライト
中に存在する金属元素と同元素で組成されるスピスル型
構造を有する金属元素組成物として、ZnO・Al2
3 、CuO・Al23 等を5重量%以下とを含有する
ため、本発明にかかる焼成用道具材は、焼成中のフェラ
イトから成分を奪うことなく、焼成用道具材の使用初期
段階であっても、十分なフェライト特性を得ることがで
きるという効果を奏するものである。
Further, MgO.Al 2 O 3 85-99.5.
%, ZrO 2 0.5 to 15% by weight, and ZnO.Al 2 O as a metal element composition having a spine-type structure composed of the same element as the metal element present in ferrite.
3 , containing 5% by weight or less of CuO.Al 2 O 3 and the like, the firing tool material according to the present invention does not deprive the ferrite from being fired of its components at the initial stage of use of the firing tool material. Even if it exists, it has an effect that sufficient ferrite characteristics can be obtained.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】スピネル型構造を有するソフトフェライト
成形物を焼成する際に用いられる焼成用道具材におい
て、 85〜99.5重量%のMgO・Al23 を主成分と
して含有し、0.5〜15重量%のZrO2 を副成分と
して含有してなることを特徴とする焼成用道具材。
1. A firing tool material used for firing a soft ferrite molded product having a spinel structure, containing 85 to 99.5% by weight of MgO.Al 2 O 3 as a main component, A firing tool material, characterized by containing 5 to 15% by weight of ZrO 2 as an accessory component.
【請求項2】スピネル型構造を有するソフトフェライト
成形物を焼成する際に用いるられる焼成用道具材におい
て、 85〜99.5重量%のMgO・Al23 を主成分と
して含有し、0.5〜15重量%のZrO2 を副成分と
して含有し、かつソフトフェライト中に存在する金属元
素のうちの少なくとも1種以上の元素を含みかつスピネ
ル型構造を有する組成物を5重量%以下含有してなるこ
とを特徴とする焼成用道具材。
2. A firing tool material used when firing a soft ferrite molded product having a spinel structure, containing 85 to 99.5% by weight of MgO.Al 2 O 3 as a main component, 5% by weight or less of a composition containing 5 to 15% by weight of ZrO 2 as an auxiliary component, at least one kind of metal element present in the soft ferrite, and having a spinel structure. A tool material for firing characterized by being
JP7032974A 1995-01-30 1995-01-30 Tool material for firing Pending JPH08208324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7032974A JPH08208324A (en) 1995-01-30 1995-01-30 Tool material for firing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7032974A JPH08208324A (en) 1995-01-30 1995-01-30 Tool material for firing

Publications (1)

Publication Number Publication Date
JPH08208324A true JPH08208324A (en) 1996-08-13

Family

ID=12373872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7032974A Pending JPH08208324A (en) 1995-01-30 1995-01-30 Tool material for firing

Country Status (1)

Country Link
JP (1) JPH08208324A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000302538A (en) * 1999-04-12 2000-10-31 Nitsukatoo:Kk Spinel sintered compact having corrosion resistance and heat treating member made therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000302538A (en) * 1999-04-12 2000-10-31 Nitsukatoo:Kk Spinel sintered compact having corrosion resistance and heat treating member made therefrom

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