JPS6317044A - Ceramics porous body - Google Patents
Ceramics porous bodyInfo
- Publication number
- JPS6317044A JPS6317044A JP16320986A JP16320986A JPS6317044A JP S6317044 A JPS6317044 A JP S6317044A JP 16320986 A JP16320986 A JP 16320986A JP 16320986 A JP16320986 A JP 16320986A JP S6317044 A JPS6317044 A JP S6317044A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- linear
- porous body
- fiber
- extrudate
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims description 28
- 239000000835 fiber Substances 0.000 claims description 33
- 239000012535 impurity Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 4
- 229910052863 mullite Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- -1 Cab Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はセラミックス多孔体に関し、特に熱輻射体の素
材用に好適なファイバーで強化した線状積層タイプのセ
ラミックス多孔体に係る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ceramic porous body, and more particularly to a fiber-reinforced linear laminated type ceramic porous body suitable for use as a material for a heat radiator.
（従来技術）
従来、線状１１１層タイプのセラミックス多孔体として
は、原料にアルミナ、ムライト等の公知のセラミックス
粉体を用い、かかるセラミックス粉体を混合、混練後線
状に押出し成形し焼成したものが知られている。(Prior art) Conventionally, a linear 111-layer type ceramic porous body has been produced by using known ceramic powders such as alumina and mullite as raw materials, mixing and kneading the ceramic powders, then extruding them into a linear shape and firing them. something is known.
（発明が解決しようとする問題点）
しかし、従来の線状鎖層タイプのセラミックス多孔体は
空隙率の高さにより熱輻射体に用いた場合にはその効果
は大きいが、素材自体が高温で軟化し、耐高温クリープ
特性が悪いという問題点があった。特に１４００℃以上
の高温においては自重がクリープ荷重となって変形して
しまい、長時間の連続使用には耐えられなかった。(Problem to be solved by the invention) However, although the conventional linear chain layer type ceramic porous body has a high porosity and is highly effective when used as a heat radiator, There were problems in that it softened and had poor high temperature creep resistance. In particular, at high temperatures of 1400°C or higher, the weight of the product becomes a creep load and deforms, making it unable to withstand continuous use for a long time.
（問題点を解決するための手段）
本発明は、従来技術における耐高温クリープ特性を改善
し、１４００℃以上の高温雰囲気下においても変形する
ことなく連続使用に耐えられるようにするとともに、使
用中のワレやソリを減少させる為に下記の様な手段をこ
うじた。(Means for Solving the Problems) The present invention improves the high-temperature creep resistance of the conventional technology, makes it possible to withstand continuous use without deformation even in a high-temperature atmosphere of 1400°C or higher, and The following measures were taken to reduce cracks and warpage.
すなわち、線状押出物をファイバーで強化したことを特
徴とした線状積層タイプのセラミックス多孔体である。That is, it is a linear laminated type ceramic porous body characterized by a linear extrudate reinforced with fibers.
本発明においてはファイバーの体積分率を線状押出分の
単位容量あたり１〜１０％とする。ファイバーを体積分
率で１％以上添加すると、線状押出物の比強度が向上し
成形体の耐高温クリープが向上する。ただ、添加量が体
積分率で１０％より多くなると、線状押出物への成形が
困難に成るとともに、ファイバーとファイバーの間に空
隙力できてしまい多孔体の強度が低下してしまうゆこの
ことからファイバーの体積分率を線状押出物の単位容量
あたり１〜１０％とした。In the present invention, the volume fraction of fiber is 1 to 10% per unit volume of linear extrusion. Adding fibers in a volume fraction of 1% or more improves the specific strength of the linear extrudate and improves the high temperature creep resistance of the molded product. However, if the amount added exceeds 10% in volume fraction, it becomes difficult to form into a linear extrudate, and the strength of the porous body decreases due to the formation of void force between the fibers. Therefore, the volume fraction of fiber was set to 1 to 10% per unit volume of the linear extrudate.
なお、ファイバーの配向を線状押出物の長手方向とする
と、線状鎖層タイプのセラミックス多孔体の耐高温クリ
ープ特性が最も良くなり、多孔体の強度も最も向上する
様になる。これは成形の際にファイバーとマトリックス
の濡れ性の悪さから生ずる空隙を極力少なくでき、成形
技術上の問題とともに、ファイバーの配向がクリープ応
力に対して垂直方向になり、変形を防止できる作用が十
分に発揮するためであり、その結果強度及び耐高温クリ
ープ特性が一層向上する。Note that when the fibers are oriented in the longitudinal direction of the linear extrudate, the linear chain layer type ceramic porous body has the best high-temperature creep resistance properties, and the strength of the porous body is also most improved. This minimizes voids caused by poor wettability between fibers and matrix during molding, and in addition to problems with molding technology, the orientation of the fibers is perpendicular to the creep stress, which is sufficient to prevent deformation. As a result, the strength and high temperature creep resistance are further improved.
なお、ファイバーの配向を線状押出物の長手方向とする
ためには、ファイバーを粉体と均一に混合後、粘土の高
い坏土或いは泥漿状態とし、押出し成形成いは射出成形
の様な可塑性を用いた成形法で、所定形状の細孔から、
上記オ土或いは泥漿を流し出せばよい。In order to orient the fibers in the longitudinal direction of the linear extrudate, the fibers are uniformly mixed with the powder, made into a clay-like clay or slurry, and then formed into a clay or slurry using a plastic process such as extrusion or injection molding. A molding method using pores of a predetermined shape,
All you have to do is wash out the soil or slurry.
なお、ファイバーは直径が０．１〜５ｐｍで且つ、該線
状押出物の直径の１／３０００〜１／１００で、長さが
１０ｍｍ以下で、アスクペクト比が１０〜１００００と
した場合には高温でのクリープ特性及び多孔体の強度は
一層向上する。ただ、ファイバーも直径が、５ｐｍを超
え、あるいは線状押出物の直径の１７１００を越えると
該セラミックス多孔体の強度が下がる。また、長さで１
０ｍｍを越え、アスペクト比が１ｏｏｏｏを越えると、
線状には成形しにくくなり、かつ強度が低下する。In addition, when the fiber has a diameter of 0.1 to 5 pm, a diameter of 1/3000 to 1/100 of the diameter of the linear extrudate, a length of 10 mm or less, and an aspect ratio of 10 to 10000, it can be heated at high temperatures. The creep properties and the strength of the porous body are further improved. However, if the diameter of the fiber exceeds 5 pm or exceeds 17,100 times the diameter of the linear extrudate, the strength of the porous ceramic body decreases. Also, the length is 1
If it exceeds 0mm and the aspect ratio exceeds 1oooo,
It becomes difficult to form into a linear shape, and the strength decreases.
マトリックスとしてのセラミックスとしては、たとえば
、アルミナ、ジルコン、ジルコニア、ムライト、ＳｉＣ
，Ｓｉ３Ｎ４ 、ＬＡＳ、マグネシア等あるいはこれら
を混合したものを用いればよい、また、ファイバーとし
ては、たとえば、アルミナ、ムライト、ジルコニア、チ
タン酸カリウム等のセラミックファイバー、ガラスファ
イバー或いは有機質のファイバー、カーボンファイバー
等あるいはこれらを複合させたものを用いればよ（〜。Examples of ceramics as a matrix include alumina, zircon, zirconia, mullite, and SiC.
, Si3N4, LAS, magnesia, etc., or a mixture thereof.Fibers include, for example, ceramic fibers such as alumina, mullite, zirconia, potassium titanate, glass fibers, organic fibers, carbon fibers, etc. Or you can use a combination of these (~.
線状積層タイプのセラミックス多孔体の用途が１４００
℃以上での熱輻射体である場合には、線状押出物中のフ
ァイバーも１ＴＦｔ熱性があり、軟化温度が高いことが
必要とされている。そこで、Ａｌ１０３ 、Ｓ ｉ０
２ 、ＺｒＯ２の三成分を、トータルで７０−１００
重量％、その他、Ｆｅ２Ｏ３、Ｃａｂ、ＭｇＯ等の不純
物を３０重量％以下含有するセラミックファイバーを用
いると耐熱性が優れ、かつ、軟化温度が高くなる。There are 1400 applications for linear laminated ceramic porous bodies.
In the case of a heat radiator at temperatures above .degree. C., the fibers in the linear extrudate are also required to have a thermal property of 1 TFt and a high softening temperature. Therefore, Al103, Si0
2. Three components of ZrO2, total 70-100
When a ceramic fiber containing 30% by weight or less of other impurities such as Fe2O3, Cab, MgO, etc. is used, it has excellent heat resistance and a high softening temperature.
ただ、セラミックファイバーの材質はＡ ｌ ２Ｏ３
、Ｓ ｉｏ２ 、Ｚｒ０ｚ の三成分でトータル７０
重量％より少なくなり、不純物が３０重量％より多くな
ると、ファイバー自体の耐熱性が劣ってくる。However, the material of ceramic fiber is Al 2O3
, S io2 , Zr0z total 70
When the amount of impurities is less than 30% by weight, the heat resistance of the fiber itself becomes poor.
その為セラミックスファイバーの材質をＡ ｌ ２Ｏ３
．５ｉ０２ 、Ｚｒ０ｚ の３成分でトータル７０
〜１００重量％その他ｃｙ）Ｆｅ２Ｏ３ 、 Ｃａ０、
ＭｇＯ等の不純物を３０重量％以下にまで含有したもの
を使用することが好ましい。Therefore, the material of ceramic fiber is A l 2O3
．． Total of 70 with 3 components of 5i02 and Zr0z
~100% by weight other cy) Fe2O3, Ca0,
It is preferable to use one containing up to 30% by weight of impurities such as MgO.
（発明の実施例）
公知の高温耐熱性セラミックス原料である、アルミナ、
ジルコン、ムライトに、セラミックスファイバーを表１
に示す割合で配合して押出成形にて線状鎖層タイプのセ
ラミックス多孔体に成形後、焼成し、！ｌＩ成の異なる
種々の熱輻射体を得た。(Embodiment of the invention) Alumina, which is a known high temperature heat resistant ceramic raw material,
Table 1: Zircon, mullite, and ceramic fibers
The proportions shown are mixed and extruded to form a linear chain layer type ceramic porous body, and then fired! Various thermal radiators with different lI configurations were obtained.
得られた熱輻射体につき線状押出物の垂直方向に常温曲
げ試験及び高温クリープ試験を行なった。The obtained thermal radiator was subjected to a room temperature bending test and a high temperature creep test in the vertical direction of the linear extrudate.
ここで曲げ強度は、熱輻射体を３点曲げ試験により求め
た。Here, the bending strength was determined by a three-point bending test of the heat radiator.
高温クリープは第１図に示すように、ＩＯＸ５０Ｘ１０
０ｍｍに切断した熱輻射体１の両側を支柱で支え、中央
部に熱輻射体と同じ重量のレンガ２をのせ１６００℃ｘ
ｓｈｒ保った後、両端を結び直線と中央部の最下点の差
Ｓを測定してクリープ特性の目安とした。As shown in Figure 1, high temperature creep
The heat radiator 1 cut to 0 mm is supported on both sides with pillars, and a brick 2 with the same weight as the heat radiator is placed in the center and heated to 1600℃
After maintaining the shr, both ends were connected and the difference S between the straight line and the lowest point in the center was measured and used as a measure of creep characteristics.
以上の試験結果を表１に示す。The above test results are shown in Table 1.
ＮＯ，１，２，３はファイバーを含まない従来品であり
Ｎｏ、４．５．６．７．８．９．１０は本発明における
セラミックスファイバーを含む線状清音タイプのセラミ
ックス多孔体である。Nos. 1, 2, and 3 are conventional products that do not contain fibers, and Nos. 4, 5, 6, 7, 8, 9, and 10 are linear clear type ceramic porous bodies containing ceramic fibers according to the present invention.
ファイバーを含まない従来品（Ｎｏ、１．２゜３）を用
いた熱輻射体は、１６００℃の温度では、軟化してしま
い、ｊ！？！続使用には耐えられない。A thermal radiator using a conventional product (No. 1.2°3) that does not contain fibers softens at a temperature of 1600°C, causing j! ? ! It cannot withstand continued use.
Ｎｏ４，５，６，７，８，９．１０の本発明品において
はセラミックスファイバーによる耐クリープ特性の改善
、及び多孔体強度の向上が見られ、高温の熱輻射体とし
て連続使用に耐えられる。In the products of the present invention Nos. 4, 5, 6, 7, 8, and 9.10, improvements in creep resistance due to the ceramic fibers and improvements in porous body strength were observed, and they could withstand continuous use as high-temperature heat radiators.
多孔体中の線状押出物におけるファイバーの配向状態を
調べてみると、第２図に示す様に線状押出物の長手方向
に配向していることがわかる。When examining the state of orientation of the fibers in the linear extrudate in the porous body, it is found that the fibers are oriented in the longitudinal direction of the linear extrudate, as shown in FIG.
（発明の効果）
本発明により従来製品の耐高温クリープ特性を改善し、
熱輻射体に用いた場合にも、１４００℃以上の高温雰囲
気化においても連続使用に耐えられる強度の大きい線状
桔層タイプのセラミックス多孔体を提供する事ができる
。(Effects of the invention) The present invention improves the high temperature creep resistance of conventional products,
Even when used as a heat radiator, it is possible to provide a linear wall layer type porous ceramic body with high strength that can withstand continuous use even in a high temperature atmosphere of 1400° C. or higher.
第１図は耐高温クリープ特性の目やすを求める実験方法
を示す概念図、第２図は線状押出物の長手方向の破断面
の走査型電子顕微鏡による観察図である。
２ レンガFIG. 1 is a conceptual diagram showing an experimental method for determining high temperature creep resistance properties, and FIG. 2 is an observation diagram of a fractured surface in the longitudinal direction of a linear extrudate using a scanning electron microscope. 2 Brick
Claims (5)
螺旋状に巻回積層されるとともに、該螺旋状巻回積層物
が夫々隣接面で相互に接合されるか、又は絡み合って成
形されているセラミックス多孔体において、該線状押出
物を、ファイバーにより強化したことを特徴とするセラ
ミックス多孔体。(1) A large number of linear extrudates made of ceramic material are each spirally wound and laminated, and the spirally wound laminates are joined to each other on adjacent surfaces or are intertwined and formed. 1. A porous ceramic body characterized in that the linear extrudate is reinforced with fibers.
が５ｍｍ以下であり、アスペクト比が１０〜１００００
であり、該線状押出物の直径の１／３００００〜１／１
００であるファイバーを用いた特許請求の範囲第１項記
載のセラミックス多孔体。(2) The fiber has a diameter of 0.1 to 5 μm, a length of 5 mm or less, and an aspect ratio of 10 to 10,000.
and 1/30000 to 1/1 of the diameter of the linear extrudate
2. A porous ceramic body according to claim 1, which uses fibers having a composition of 0.00.
体積分率で１〜１０％含む特許請求の範囲第１項記載の
セラミックス多孔体。(3) fiber per unit volume of the linear extrudate,
The porous ceramic body according to claim 1, which contains a volume fraction of 1 to 10%.
向とした特許請求の範囲第１項記載のセラミックス多孔
体。(4) The ceramic porous body according to claim 1, wherein the orientation direction of the fibers is the longitudinal direction of the linear extrudate.
、ＺｒＯ＿２の３成分で７０〜１００重量％、Ｆｅ＿２
Ｏ＿２、ＣａＯ等の不純物を３０重量％まで含有する特
許請求の範囲第１項記載のセラミックス多孔体。(5) Fiber components are Al_2O_3, SiO_2
, ZrO_2, 70-100% by weight, Fe_2
The porous ceramic body according to claim 1, containing up to 30% by weight of impurities such as O_2 and CaO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16320986A JPH0688842B2 (en) | 1986-07-10 | 1986-07-10 | Ceramic porous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16320986A JPH0688842B2 (en) | 1986-07-10 | 1986-07-10 | Ceramic porous body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6317044A true JPS6317044A (en) | 1988-01-25 |
| JPH0688842B2 JPH0688842B2 (en) | 1994-11-09 |
Family
ID=15769363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16320986A Expired - Lifetime JPH0688842B2 (en) | 1986-07-10 | 1986-07-10 | Ceramic porous body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0688842B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121419A (en) * | 2013-02-16 | 2013-05-29 | 河南速达电动汽车科技有限公司 | Automatic flashing alarm lamp for electric automobile steering |
-
1986
- 1986-07-10 JP JP16320986A patent/JPH0688842B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121419A (en) * | 2013-02-16 | 2013-05-29 | 河南速达电动汽车科技有限公司 | Automatic flashing alarm lamp for electric automobile steering |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0688842B2 (en) | 1994-11-09 |
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