JPS6331384B2 - - Google Patents
Info
- Publication number
- JPS6331384B2 JPS6331384B2 JP2524083A JP2524083A JPS6331384B2 JP S6331384 B2 JPS6331384 B2 JP S6331384B2 JP 2524083 A JP2524083 A JP 2524083A JP 2524083 A JP2524083 A JP 2524083A JP S6331384 B2 JPS6331384 B2 JP S6331384B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- metal
- ceramics
- laminated
- added
- 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.)
- Expired
Links
- 239000000919 ceramic Substances 0.000 claims description 34
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 27
- 239000002184 metal Substances 0.000 description 27
- 125000006850 spacer group Chemical group 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- PCEXQRKSUSSDFT-UHFFFAOYSA-N [Mn].[Mo] Chemical compound [Mn].[Mo] PCEXQRKSUSSDFT-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は積層セラミツ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ツクスが注目
されている。このセラミツクスによれば、耐熱
性，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ツクスを配設するこ
とが考えられているが、通常のセラミツクスでは
金属と接合しにくく、短時間の運転で金属製シリ
ンダの内周面からセラミツクスが剥離してしまう
ものである。 Ceramics are attracting attention as cylinders for internal combustion engines. Although this ceramic has excellent heat resistance, abrasion resistance, and corrosion resistance, it is weak against tensile stress and easily breaks. Therefore, it has been considered to arrange ceramics on the inner circumferential surface of the metal cylinder, but ordinary ceramics are difficult to bond with metal, and the ceramics may peel off from the inner circumferential surface of the metal cylinder after a short period of operation. It's something to put away.
そこで本発明はかかる問題点を解消した積層セ
ラミツクスの製造方法を提供するものであつて、
その特徴とするところは、ジルコニアセラミツク
ス粉体からなる第１層と、ジルコニアセラミツク
ス粉体にSi3N4粉体を１〜20mol％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1750〜1880℃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ツクスを得ることができ
るものであつて、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ツクスの第
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ツクスの第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。したがつて耐熱性，耐摩耗
性，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、積層セラミツ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。 Therefore, the present invention provides a method for manufacturing laminated ceramics that solves these problems.
The feature is that the first layer made of zirconia ceramic powder and the second layer made of zirconia ceramic powder uniformly mixed with 1 to 20 mol% of Si 3 N 4 powder are brought into contact with each other, and the first layer , after cold-forming the second layer, it is fired at 1400-1700°C and further heat-treated at 1750-1880°C in vacuum or in the atmosphere. According to this method, the side surface of the first layer is It is possible to obtain a laminated ceramic having a dense surface and a porous side surface on the second layer side. When the metal spacer is melted by heating, the molten metal from the metal spacer enters the hole in the side surface of the second layer of the laminated ceramic, creating an anchor effect and
It reacts with the metal to form an alloy and is bonded to the inner circumferential surface of the metal cylinder. Therefore, it is possible to provide a cylinder that has excellent heat resistance, wear resistance, 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. It is something.
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ツクス
粉体からなる第１層２と、安定化剤を添加したジ
ルコニアセラミツクス粉体にSi3N4粉体を１〜
20mol％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
冷間成形し、次に第２図に示すごとく金型１内か
ら積層セラミツクス５を取出し、次にその積層セ
ラミツクス５を1400〜1700℃で焼成する。これに
よつてSi3N4を分散させたジルコニア焼結体がで
きる。次に真空または大気中において1750〜1880
℃で熱処理する。これによつて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℃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1mol％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20mol％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
ルコニアセラミツクス粉体に添加された安定化剤
としては、Y2O3，MgO，CaOなどがあり、これ
らを単独でまたは同時に１〜10mol％添加する。
この安定化剤により酸化ジルコニウム（ZrO2）
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。 Hereinafter, one embodiment of the present invention will be described based on the drawings. That is, as shown in Fig. 1, a first layer 2 made of zirconia ceramic powder to which a stabilizer has been added is placed on the bottom surface of a mold 1, and a first layer 2 made of zirconia ceramic powder to which a stabilizer has been added, and Si 3 N 4 powder to the zirconia ceramic powder to which a stabilizer is added. 1~
A 20 mol% homogeneously mixed second layer 3 is then placed in the mold 1, and the first and second layers 2 and 3 are cold-formed. The laminated ceramic 5 is taken out from the mold 1, and then the laminated ceramic 5 is fired at 1400 to 1700°C. This produces a zirconia sintered body in which Si 3 N 4 is dispersed. Then 1750~1880 in vacuum or atmosphere
Heat treat at ℃. As a result, Si 3 N 4 is decomposed into Si and N 2 gas, and in this decomposition process, Si in the second layer 3 is
is generated and micropores are also generated. Here, if the heat treatment temperature is below 1750℃, the decomposition of Si 3 N 4 is inactive, and if it is above 1880℃, the decomposition is sufficient, but the micropores that were initially generated after decomposition coalesce and become coarse. It is something that will happen. Also Si 3 N 4
If the amount added is less than 1 mol%, the formation of porosity during heat treatment will not be sufficient, and if the amount added is more than 20 mol%, the strength of the obtained porous body will be reduced. Further, stabilizers added to the zirconia ceramic powder include Y 2 O 3 , MgO, CaO, etc., and these are added singly or simultaneously in an amount of 1 to 10 mol %.
This stabilizer allows zirconium oxide (ZrO 2 )
The crystal structure during heat treatment can be maintained even when cooled to room temperature.
次に上記の積層セラミツクス５をシリンダ内壁
として用いる場合には、第３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
セラミツクス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
セラミツクス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 the above laminated ceramic 5 is used as the inner wall of the cylinder, the laminated ceramic 5 is arranged on the inner peripheral surface of the metal cylinder 6 via a metal spacer 7 made of, for example, a molybdenum-manganese alloy, as shown in FIG. Then, the metal spacer 7 is melted by heating. Then, the molten metal enters the hole in the side surface of the second layer 3 side of the laminated ceramics 5 and produces an anchor effect, reacts with Si, becomes alloyed, and is bonded to the inner peripheral surface of the metal cylinder 6. be.
上記構成では、金属スペーサ７からなる溶融金
属が多孔質セラミツ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
ミツ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 made of the metal spacer 7 enters the pores of the porous ceramic and the Si
40% compared to when the molten metal simply enters the pores of porous ceramics.
It has been confirmed through experiments that the bonding strength increases as well.
以上述べたごとく本発明の積層セラミツクス製
造方法によれば、第１層側の側面を緻密な面と
し、第２層側の側面を多孔質な面とした積層セラ
ミツクスを得ることができるものであつて、たと
えば金属製シリンダの内周面に金属スペーサを介
して積層セラミツクスの第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
ツクスの第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
たがつて耐熱性，耐摩耗性，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
ツ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 laminated ceramic manufacturing method 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, if the second layer side side of the laminated ceramic is applied to the inner peripheral surface of a metal cylinder via a metal spacer and heated to melt the metal spacer,
The molten metal made of the metal spacer enters the hole in the side surface of the second layer side of the laminated ceramic to produce an anchor effect, reacts with Si, becomes alloyed, and is bonded to the inner peripheral surface of the metal cylinder. Therefore, it is possible to provide a cylinder that has excellent heat resistance, wear resistance, corrosion resistance, and is resistant to tensile stress.
In addition, it can withstand long-term operation, and the laminated ceramics will not peel off from the inner peripheral surface of the metal cylinder.
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図は積層セラミツクスの
縦断面図、第３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……積層セラミツクス、６……金属
製シリンダ、７……金属スペーサ。
The figures show an 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. 3 is a state in which it is disposed on the inner peripheral surface of a metal cylinder. FIG. 1... Mold, 2... First layer, 3... Second layer, 4
... Ram, 5 ... Laminated ceramics, 6 ... Metal cylinder, 7 ... Metal spacer.
Claims (1)
粉体からなる第１層と、安定化剤を添加したジル
コニアセラミツクス粉体にSi3N4粉体を１〜
20mol％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1750〜1880℃で熱処理したことを特徴とする
積層セラミツクスの製造方法。1. A first layer consisting of zirconia ceramic powder to which a stabilizer has been added, and a layer of Si 3 N 4 powder to the zirconia ceramic powder to which a stabilizer has been added.
The second layer uniformly mixed with 20 mol% was brought into contact with each other, and the first and second layers were cold-formed.
1. A method for producing laminated ceramics, characterized in that the ceramics are fired at ~1700°C and further heat treated at 1750~1880°C in vacuum or in the atmosphere.
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 JPS59152277A (en) | 1984-08-30 |
| JPS6331384B2 true 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) |
Families Citing this family (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
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59152277A (en) | 1984-08-30 |
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