JPS59152277A - Manufacture of laminate ceramics - Google Patents
Manufacture of laminate ceramicsInfo
- Publication number
- JPS59152277A JPS59152277A JP2524083A JP2524083A JPS59152277A JP S59152277 A JPS59152277 A JP S59152277A JP 2524083 A JP2524083 A JP 2524083A JP 2524083 A JP2524083 A JP 2524083A JP S59152277 A JPS59152277 A JP S59152277A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- ceramics
- metal
- laminated
- ceramic
- 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
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Laminated Bodies (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】 本発明は積層セラミックスの製造方法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing laminated ceramics.
内燃機関のシリンダとしてセラミックスが注目されてい
る。このセラミックスによれば、耐熱性。Ceramics are attracting attention as cylinders for internal combustion engines. According to this ceramic, it is heat resistant.
耐摩耗性、耐食性に優れているものの、引張応力に弱く
、壊れやすいものである。そこで金属製シリンダの内周
面にセラミックスを配設することが考えられているが、
通常のセラミックスでは金属と接合しに＜＜、短時間の
運転で金属製シリンダの内周面からセラミックスが剥離
してしまうものである。Although it has excellent wear resistance and corrosion resistance, it is weak against tensile stress and easily breaks. Therefore, it has been considered to arrange ceramics on the inner peripheral surface of the metal cylinder, but
When ordinary ceramics are bonded to metal, the ceramics peel off from the inner circumferential surface of the metal cylinder after a short period of operation.
そこで本発明はかかる問題点を解消した積層′セラミッ
クスの製造方法を提供するものであって、その特徴とす
るところは、ジルコニアセラミックス粉体からなる第１
層と、ジルコニアセラミックス粉体にＳｉ３Ｎ４粉体を
１〜２０ｍｏ＃％均一混合した第２層とを互いに当接さ
せ、その第１．第２の層を冷開成形した後、１４００〜
１７００℃で焼成し、さらに真゛空または大゛気中にお
いて１７５０〜１８８０℃で熱処理したことにあり、か
かる方法によれば、第１層側の側面を緻密な面とし、第
２層側の側面を多孔質な面とした積層セラミックスを得
ることができるものであって、たとえば金属製シリンダ
の内周□面ｌど金属スペーサを介して積層セラミックス
の第２暦側の側面をあてがい、加熱して上記金属スペー
サを溶解させろと、その金属スペーサからなる溶融金属
が積層セラミックスの第２層側の側面の孔内に入り込ん
でアンカー効果が生じると共にＳｉと反応して合金化し
かつ金属製シリンダの内周面に接着させられる。したが
って耐熱性、耐摩耗性。Therefore, the present invention provides a method for manufacturing laminated ceramics that solves these problems.
The first layer and the second layer, which is a mixture of zirconia ceramic powder and Si3N4 powder in an amount of 1 to 20 mo#%, are brought into contact with each other. After cold-opening the second layer, 1400 ~
It is fired at 1,700°C and then heat treated at 1,750 to 1,880°C in a vacuum or atmosphere. According to this method, the side surface on the first layer side is made a dense surface, and the side surface on the second layer side is made into a dense surface. It is possible to obtain a laminated ceramic with a porous side surface, for example, by applying the side surface of the laminated ceramic on the second side through a metal spacer to the inner peripheral surface of a metal cylinder and heating it. When the metal spacer is melted, the molten metal from the metal spacer enters the hole on the side surface of the second layer side of the laminated ceramic, creating an anchor effect, reacting with Si to form an alloy, and melting the inside of the metal cylinder. Glued to the surrounding surface. Therefore heat resistant and wear resistant.
耐食性に優れかつ引張応力にも強いシリンダを提供する
ことができ、しかも長期間の運転にも十分耐えて、積層
セラミックスが金属製シリンダ内周面から剥離しないも
のである。It is possible to provide a cylinder that is excellent in corrosion resistance and strong against tensile stress, and can withstand long-term operation sufficiently so that the laminated ceramic does not peel off from the inner circumferential surface of the metal cylinder.
以下、本発明の一実施例を図に基づいて説明する。すな
わち第１図に示すごとく金型（１）の底面上に、安定化
剤を添加したジルコニアセラミックス粉体からなる第１
層（２）と、安定化剤を添加したジルコニアセラミック
ス粉体にＳ ｉ ｓ Ｎ４粉体を１〜２０ｍｏ１％均一
混合した第２ 層（３）とを入れ、次に金型（１）内に
ラム（４）を入れて第１．第２の層（２） （３）を冷
開成形し、次に第２図に示すごとく金型（１）内から積
層セラミックス（５）を取出し、次にその積層セラミッ
クス（Ｆｉ）を１４００〜１７００°Ｃで焼成する。こ
れによってＳｉ３Ｎ４を分散させたジルコニア焼結体が
できる。Hereinafter, one embodiment of the present invention will be described based on the drawings. That is, as shown in FIG.
Layer (2) and a second layer (3) made by uniformly mixing 1 to 20 mo1% of SiS N4 powder to zirconia ceramic powder to which a stabilizer has been added are placed, and then placed in the mold (1). Add the rum (4) and turn it into the first layer. The second layer (2) (3) is cold-open molded, then the laminated ceramic (5) is taken out from the mold (1) as shown in FIG. Bake at 1700°C. This produces a zirconia sintered body in which Si3N4 is dispersed.
次に真空または大気中において１７５０〜１８８０℃で
熱処理する。これによってＳｉ３Ｎ４はＳｉとＮ２ガス
に分解し、この分解過程において第２層（３）のＳｉが
生成するとともに微細孔が生成する。ここで熱処理温度
が１７５０℃以下ではＳｉ３Ｎ４の分解が不活発であり
、１８８０°Ｃ以上では分解が十分におこなわれるが、
分解後に一次的に発生していた微細孔が合体して粗大化
してしまうものである。またＳｉ３Ｎ４の添加量が１ｍ
ｏ／％以下では熱処理の際の多孔質化が十分でなく、そ
の添加量が２０ｍｏＩ！％以上では得られた多孔質体の
強度が小さくなる。さらにジルコニアセラミックス粉体
に添加された安定化剤としては、Ｙ２Ｏ３，ＭｇＯ、Ｃ
ａＯなどがあり、これらを単独でまたは同時に１〜１０
ｍｏ／％添加する。この安定化剤 ・により酸化
ジルコニウム（ＺｒＯｚ）の熱処理時の結晶構造を室温
まで冷却した状態でも保持することができるものである
。Next, heat treatment is performed at 1750 to 1880°C in vacuum or in the atmosphere. As a result, Si3N4 is decomposed into Si and N2 gas, and in this decomposition process, Si of the second layer (3) is generated and fine pores are also generated. Here, if the heat treatment temperature is 1750°C or lower, the decomposition of Si3N4 is inactive, and if the heat treatment temperature is 1880°C or higher, the decomposition is sufficient.
The fine pores that were initially generated after decomposition coalesce and become coarse. Also, the amount of Si3N4 added is 1 m
If it is less than o/%, the porosity during heat treatment will not be sufficient, and the amount added will be 20 moI! % or more, the strength of the obtained porous body becomes low. Furthermore, the stabilizers added to the zirconia ceramic powder include Y2O3, MgO, C
aO, etc., and these can be used singly or simultaneously at 1 to 10
Add mo/%. This stabilizer allows the crystal structure of zirconium oxide (ZrOz) to be maintained during heat treatment even when cooled to room temperature.
次に上記の積層セラミックス（５）をシリンダ内壁とし
て用いる場合には、第８図に示すごとく金属製シリンダ
（６）の内周面にたとえばモリブデン−マンガン合金か
らなる金属スペーサ（７）を介して積層セラミックス（
５）を配設し、次に加熱して金属スペーサ（７）を溶解
する。すると、その溶融金属が積層セラミックス（５）
の第２ 層（３）側の側面の孔内に入り込んでアンカー
効果が生じると共にＳｉと反応して合金化しかつ金属製
シリンダ（６）の内周面に接着させられるものである。Next, when using the above-mentioned laminated ceramic (5) as the inner wall of the cylinder, as shown in FIG. Laminated ceramics (
5) and then heated to melt the metal spacer (7). Then, the molten metal becomes laminated ceramics (5)
It enters into the hole in the side surface on the second layer (3) side and produces an anchor effect, reacts with Si to form an alloy, and is bonded to the inner circumferential surface of the metal cylinder (6).
上記構成では、金属スペーサ（７）からなる溶融金属が
多孔質セラミックスの孔に入り込むと共にＳｉと反応す
ることから、その溶融金属が多孔質セラミックスの孔に
入り込むだけの場合に比べて４０％以上も接合強度が増
大するのが実験で確められた。In the above configuration, the molten metal from the metal spacer (7) enters the pores of the porous ceramic and reacts with Si, so the molten metal increases by more than 40% compared to the case where the molten metal simply enters the pores of the porous ceramic. It was confirmed through experiments that the bonding strength increased.
以上述べたごとく本発明の積層セラミックス製造方法に
よれば、第１層側の側面を緻密な面とし、第２Ｊｊｌ側
の側面を多孔質な面とした積層セラミックスを得ること
ができるものであって、たとえば金属製シリンダの内周
面に金属スペーサを介して積層セラミックスの第２層側
の側面をあてがい、加熱して上記金属スペーサを溶解さ
せると、その金属スペーサからなる溶融金属が積層セラ
ミックスの第２層側の側面の孔内に入り込んでアンカー
効果が生じると共にＳｉと反応して合金化しかつ金属製
シリンダの内周面に接着させられる。したがって耐熱性
、耐摩耗性、耐食性に優れかっ引張応力にも強いシリン
ダを提供することができ、しかも長期間の運転にも十分
耐えて、積層セラミックスが金属製シリンダ内周面から
剥離しないものである。As described above, according to the method for producing a laminated ceramic of the present invention, it is possible to obtain a laminated ceramic in which the side surface on the first layer side is a dense surface and the side surface on the second layer side is a porous surface. For example, when the second layer side surface of the laminated ceramic is applied to the inner circumferential surface of a metal cylinder via a metal spacer and heated to melt the metal spacer, the molten metal made of the metal spacer melts into the second layer of the laminated ceramic. It enters into the hole in the side surface of the second layer side and produces an anchor effect, reacts with Si, becomes alloyed, and is bonded to the inner circumferential surface of the metal cylinder. Therefore, we can provide a cylinder that has excellent heat resistance, wear resistance, and corrosion resistance, and is resistant to tensile stress. Furthermore, it can withstand long-term operation and the laminated ceramic will not peel off from the inner peripheral surface of the metal cylinder. be.
図は本発明の一実施例を示し、第１図は冷間成形状態の
縦断面図、第２図は積層セラミックスの縦断面図、第８
図は金属製シリンダ内周面に配設した状態の縦断面図で
ある。
（１）・・・金型、（２）・・・第１層、（３）・・・
第２層、（４）・・・ラム、（５）・・・積層セラミッ
クス、（６）・・・金属製シリンダ、（７）・・・金属
スペーサ
代理人森本義弘The figures show one embodiment of the present invention, in which Fig. 1 is a longitudinal cross-sectional view of a cold-formed state, Fig. 2 is a longitudinal cross-sectional view of laminated ceramics, and Fig. 8 is a longitudinal cross-sectional view of laminated ceramics.
The figure is a longitudinal cross-sectional view of a state in which it is disposed on the inner circumferential surface of a metal cylinder. (1)...Mold, (2)...First layer, (3)...
2nd layer, (4)...Ram, (5)...Laminated ceramics, (6)...Metal cylinder, (7)...Metal spacer agent Yoshihiro Morimoto
Claims (1)
らなる第１層と、安定化・剤を添加したジルコニアセラ
ミックス粉体にＳｉ３Ｎ４゛粉体を１〜２０ｍｏ（？％
均一混合した第２層とを互いに当接させ、その第１．第
２の層を冷間成形した後、１４００〜１７００℃で焼成
し、さらに真空または大気中において１７５０〜１８８
０℃で熱処理したことを特徴とする積層セラミックスの
製造方法。1. A first layer consisting of zirconia ceramic powder to which a stabilizer has been added, and 1 to 20 mo (?%) of Si3N4 powder to the zirconia ceramic powder to which a stabilizing agent has been added.
The uniformly mixed second layer is brought into contact with each other, and the first layer is brought into contact with the second layer. After cold-forming the second layer, it is fired at 1400-1700°C and further heated to 1750-188°C in vacuum or air.
A method for producing laminated ceramics characterized by heat treatment at 0°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2524083A JPS59152277A (en) | 1983-02-16 | 1983-02-16 | Manufacture of laminate ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2524083A JPS59152277A (en) | 1983-02-16 | 1983-02-16 | Manufacture of laminate ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59152277A true JPS59152277A (en) | 1984-08-30 |
| JPS6331384B2 JPS6331384B2 (en) | 1988-06-23 |
Family
ID=12160455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2524083A Granted JPS59152277A (en) | 1983-02-16 | 1983-02-16 | Manufacture of laminate ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59152277A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6241469A (en) * | 1985-08-14 | 1987-02-23 | Kubota Ltd | Aluminum cylinder for engine |
| JPS6347138A (en) * | 1986-08-15 | 1988-02-27 | 中部電力株式会社 | Tile lining body |
-
1983
- 1983-02-16 JP JP2524083A patent/JPS59152277A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6241469A (en) * | 1985-08-14 | 1987-02-23 | Kubota Ltd | Aluminum cylinder for engine |
| JPH0438947B2 (en) * | 1985-08-14 | 1992-06-26 | ||
| JPS6347138A (en) * | 1986-08-15 | 1988-02-27 | 中部電力株式会社 | Tile lining body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6331384B2 (en) | 1988-06-23 |
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