JPH09132449A - Ceramic sliding material - Google Patents
Ceramic sliding materialInfo
- Publication number
- JPH09132449A JPH09132449A JP7309876A JP30987695A JPH09132449A JP H09132449 A JPH09132449 A JP H09132449A JP 7309876 A JP7309876 A JP 7309876A JP 30987695 A JP30987695 A JP 30987695A JP H09132449 A JPH09132449 A JP H09132449A
- Authority
- JP
- Japan
- Prior art keywords
- sliding member
- oxide
- ceramics
- cerium
- content
- 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
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 title abstract description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 17
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 claims description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000013078 crystal Substances 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 abstract description 15
- 229910018404 Al2 O3 Inorganic materials 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 16
- 239000000843 powder Substances 0.000 description 10
- 238000012937 correction Methods 0.000 description 9
- 239000002270 dispersing agent Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000003599 detergent Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は摩擦係数が小さく耐
摩耗性に優れたセラミツクス摺動部材に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramics sliding member having a small friction coefficient and excellent wear resistance.
【０００２】[0002]
【従来の技術】従来、摺動部材には鉄系材料が用いら
れ、また耐摩耗性が要求される部分にはアルミナ(Al
2O3) などのセラミツクス材料が用いられている。しか
し、鉄系材料は厳しい摺動条件下において凝着、移着を
起こし、摩耗が進行する。アルミナ(Al2O2) などのセラ
ミツクス材料は耐摩耗性に優れるが、潤滑油を吸収しに
くい、つまり潤滑油の保持能力に劣るので、低摩擦性を
期待できない。2. Description of the Related Art Conventionally, iron-based materials have been used for sliding members, and alumina (Al
Ceramic materials such as 2 O 3 ) are used. However, iron-based materials cause adhesion and transfer under severe sliding conditions, and wear progresses. Ceramic materials such as alumina (Al 2 O 2 ) have excellent wear resistance, but they are difficult to absorb lubricating oil, that is, they have poor lubricating oil holding ability, and therefore low frictional properties cannot be expected.
【０００３】特開昭63-265860号公報には、セリア(Ce
O2)を含むジルコニア(ZrO2)を主成分にアルミナ(Al2O3)
を添加してなるセラミツクス摺動部材が提案されてい
るが、高価なジルコニア(ZrO2)を多量に使用することか
ら利用分野が制限される。Japanese Unexamined Patent Publication No. 63-265860 discloses ceria (Ce
O 2) zirconia containing (alumina mainly composed of ZrO 2) (Al 2 O 3 )
Although a ceramics sliding member obtained by adding a slag is proposed, its field of use is limited because a large amount of expensive zirconia (ZrO 2 ) is used.
【０００４】[0004]
【発明が解決しようとする課題】本発明の課題は上述の
問題に鑑み、潤滑油とのなじみがよく、摩擦係数が小さ
く、耐熱性と耐摩耗性に優れたセラミツクス摺動部材を
提供することにある。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a ceramics sliding member that is well compatible with lubricating oil, has a small friction coefficient, and is excellent in heat resistance and wear resistance. It is in.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明の構成はアルミニウム(Al)の酸化物とジルコ
ニウム(Zr)の酸化物とを主成分とし、セリウム(Ce)の酸
化物を含むセラミツクスにおいて、アルミニウム(Al)の
含有量がアルミナ(Al2O3) に換算して５０〜７５wt％、
ジルコニウム(Zr)の含有量がジルコニア(ZrO2)に換算し
て２０〜４５wt％、セリウム(Ce)の含有量がセリア(CeO
2)に換算して５〜２０wt％であることを特徴とする。In order to solve the above problems, the structure of the present invention is mainly composed of an oxide of aluminum (Al) and an oxide of zirconium (Zr), and an oxide of cerium (Ce). In the ceramics containing, the content of aluminum (Al) is 50 to 75 wt% in terms of alumina (Al 2 O 3 ),
The content of zirconium (Zr) is 20 to 45 wt% in terms of zirconia (ZrO 2 ), and the content of cerium (Ce) is ceria (CeO 2 ).
It is characterized in that it is 5 to 20 wt% when converted to 2 ).
【０００６】また、本発明の構成はαサイアロン（sial
on）とセリウム(Ce)の酸化物を含んでおり、αサイアロ
ンの含有量が８５〜９５wt％であり、セリウム(Ce)の含
有量がセリア(CeO2)に換算して５〜１５wt％であること
を特徴とする。Further, the structure of the present invention is based on α sialon (sial).
on) and an oxide of cerium (Ce) are included, the content of α-sialon is 85 to 95 wt%, and the content of cerium (Ce) is 5 to 15 wt% when converted to ceria (CeO 2 ). It is characterized by being.
【０００７】[0007]
【発明の実施の形態】本発明によるセラミツクス摺動部
材は、原料としてアルミニウム(Al)の酸化物とジルコニ
ウム(Zr)の酸化物、またはαサイアロン（sialon）を主
成分とし、セリウム(Ce)の酸化物を添加したことを特徴
とする。BEST MODE FOR CARRYING OUT THE INVENTION A ceramics sliding member according to the present invention comprises aluminum (Al) oxide and zirconium (Zr) oxide as raw materials, or α-sialon as a main component, and cerium (Ce) as a main component. It is characterized in that an oxide is added.
【０００８】セラミツクス摺動部材の原料の内でセリウ
ム(Ce)の酸化物は、セラミツクス摺動部材としての焼結
体の表面の潤滑油の保持性を向上させる。Cerium (Ce) oxide, which is one of the raw materials for the ceramics sliding member, improves the retention of the lubricating oil on the surface of the sintered body as the ceramics sliding member.
【０００９】[0009]
［実施例１］アルミナ(Al2O3) 粉末と、イツトリア(Y2O
3)を５wt％含むジルコニア(ZrO2)粉末と、セリア(CeO2)
粉末とを、５５：４０：５の重量配合比にて混合し、ボ
ールミルにて約２４時間粉砕しながら混合した。得られ
た混合粉末から成形体を加圧成形し、該成形体を温度約
１５００℃の大気中で約３時間焼成して、セラミツクス
摺動部材としての焼結体を得た。Example 1 Alumina (Al 2 O 3 ) powder and itutria (Y 2 O 3 )
3 ) 5 wt% zirconia (ZrO 2 ) powder and ceria (CeO 2 )
The powder and the powder were mixed in a weight mixing ratio of 55: 40: 5, and were mixed while being crushed by a ball mill for about 24 hours. A molded body was pressure-molded from the obtained mixed powder, and the molded body was fired in the atmosphere at a temperature of about 1500 ° C. for about 3 hours to obtain a sintered body as a ceramics sliding member.
【００１０】上述の如くして得られた本発明によるセラ
ミツクス摺動部材は、組織を分析してみたところ、粒径
３μｍ以下のアルミナ(Al2O3) 粒子と、イツトリウム
(Y) ，セリウム(Ce)を含むジルコニア(ZrO2)粒子とが均
一に分散し、粒界中にセリア(CeO2)が存在しており、気
孔の内径は５μｍ以下であつた。When the structure of the ceramics sliding member according to the present invention obtained as described above was analyzed, alumina (Al 2 O 3 ) particles having a particle size of 3 μm or less and yttrium were used.
(Y) and zirconia (ZrO 2 ) particles containing cerium (Ce) were uniformly dispersed, ceria (CeO 2 ) was present in the grain boundaries, and the inner diameter of the pores was 5 μm or less.
【００１１】次に、本発明によるセラミツクス摺動部材
を寸法６５×１５×１０ｍｍ（摺動面の表面粗さＲｚが
０．４μｍ以下）に加工し、摺動試験用板片を作製し
た。また、比較材として片状黒鉛鋳鉄材を同寸法に加工
し、摺動試験用板片を作製した。一方、相手材として球
状黒鉛鋳鉄材を寸法φ８×２３ｍｍ（端面ＳＲ１８）に
加工し、摺動試験用ピンを作製した。Next, the ceramics sliding member according to the present invention was processed into a size of 65 × 15 × 10 mm (surface roughness Rz of the sliding surface was 0.4 μm or less) to prepare a slide test plate piece. Further, as a comparative material, a flake graphite cast iron material was processed to have the same dimensions to produce a slide test plate piece. On the other hand, a spheroidal graphite cast iron material as a mating material was processed into a size φ8 × 23 mm (end surface SR18) to produce a sliding test pin.
【００１２】往復動型摺動試験機により、前記摺動試験
用ピンの半球状の先端を前記摺動試験用板片に押し付
け、潤滑油を供給したうえ摺動試験用板片を往復摺動さ
せて摩擦係数を測定した。摺動試験条件は平均速度０．
２ｍ／ｓｅｃ、荷重０．２〜１５ｋｇｆ、温度１００℃
とし、潤滑油にデイーゼル機関用潤滑油Ａ（清浄分散剤
を含む潤滑油）を用いた。図１に示す試験結果から明ら
かなように、本発明によるセラミツクス摺動部材は、比
較材（片状黒鉛鋳鉄）に比べて摩擦特性に優れている。With a reciprocating sliding tester, the hemispherical tip of the sliding test pin is pressed against the sliding test plate piece, lubricating oil is supplied, and the sliding test plate piece slides back and forth. The friction coefficient was measured. The sliding test condition is an average speed of 0.
2 m / sec, load 0.2-15 kgf, temperature 100 ° C
As the lubricating oil, Diesel engine lubricating oil A (lubricating oil containing a detergent dispersant) was used. As is clear from the test results shown in FIG. 1, the ceramics sliding member according to the present invention is superior in friction characteristics to the comparative material (flake graphite cast iron).
【００１３】上述した実施例１とほぼ同様の方法で、各
原料粉末の重量配合比を表１に示すように種々変更して
セラミツクス摺動部材（表１の試料A11〜A13およびA21
〜A24）としての焼結体を作製し、同様の摺動試験によ
り各セラミツクス摺動部材の摩擦係数を測定した。表２
に示す測定結果から明らかなように、摩擦係数が小さい
セラミツクス摺動部材を得るための各原料の最適な重量
配合比は、アルミナ(Al2O3) を５０〜７５wt％、ジルコ
ニア(ZrO2)を２０〜４５wt％、セリア(CeO2)を５〜２０
wt％でとするのがよい。In substantially the same manner as in Example 1 described above, the weight mixing ratio of each raw material powder was variously changed as shown in Table 1, and the ceramic sliding member (samples A11 to A13 and A21 in Table 1).
.About.A24) were produced, and the friction coefficient of each ceramics sliding member was measured by the same sliding test. Table 2
As is clear from the measurement results shown in, the optimum weight mixing ratio of each raw material for obtaining a ceramics sliding member having a small friction coefficient is 50 to 75 wt% alumina (Al 2 O 3 ) and zirconia (ZrO 2 ) 20-45 wt% and ceria (CeO 2 ) 5-20
It is recommended to use wt%.
【００１４】また、潤滑油に含まれる清浄分散剤の影響
をみるために、上述の摺動試験で用いた潤滑油Ａと、同
潤滑油から清浄分散剤を除去したもの（これを潤滑油Ｂ
とする）とを用いて同様の摺動試験を行い、本発明によ
るセラミツクス摺動部材と比較材の摩擦係数をそれぞれ
測定した。摺動試験条件は平均速度０．２ｍ／ｓｅｃ、
荷重１０ｋｇｆ、温度１００℃とした。表２に示す試験
結果から明らかなように、本発明によるセラミツクス摺
動部材の摩擦係数は、清浄分散剤の影響を受けない。こ
れに対し、比較材は清浄分散剤の影響を受け、清浄分散
剤を含む潤滑油のもとでは摩擦係数が増加する。In order to examine the effect of the detergent-dispersant contained in the lubricating oil, the lubricating oil A used in the above-mentioned sliding test and the lubricating oil from which the detergent-dispersant was removed (the lubricating oil B
The same sliding test was carried out by using (1) and (3) to measure the friction coefficients of the ceramic sliding member according to the present invention and the comparative material, respectively. Sliding test conditions are average speed 0.2m / sec,
The load was 10 kgf and the temperature was 100 ° C. As is clear from the test results shown in Table 2, the friction coefficient of the ceramics sliding member according to the present invention is not affected by the detergent dispersant. On the other hand, the comparative material is affected by the detergent dispersant, and the friction coefficient increases under the lubricating oil containing the detergent dispersant.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 潤滑油の種類 清浄分散剤を 清浄分散剤を含 含む潤滑油Ａ まない潤滑油Ｂ セラミツクス摺動 の部材摩擦係数 0.027 0.027 比較材の摩擦係数 0.058 0.032 ［実施例２］αサイアロン（αsialon）粉末とセリア(C
eO2)粉末とを、重量配合比９５：５にて混合し、ボール
ミルにて約２４時間粉砕しながら混合した。得られた混
合粉末から成形体を加圧成形し、該成形体を温度１８０
０℃の窒素雰囲気にて約３時間焼成して、セラミツクス
摺動部材としての焼結体を得た。[Table 2] Type of lubricating oil Lubricant A containing detergent dispersant Lubricant A without lubricant B Ceramic friction coefficient of friction 0.027 0.027 Friction coefficient of comparative material 0.058 0.032 [Example 2] α sialon ( αsialon) powder and ceria (C
eO 2 ) powder was mixed at a weight mixing ratio of 95: 5, and was mixed while being crushed by a ball mill for about 24 hours. A molded body is pressure-molded from the obtained mixed powder, and the molded body is heated to a temperature of 180.
It was fired in a nitrogen atmosphere at 0 ° C. for about 3 hours to obtain a sintered body as a ceramics sliding member.
【００１７】上述の如くして得られた本発明によるセラ
ミツクス摺動部材について、実施例１と同様の方法で摩
擦係数を測定した。また、上述したのと同様の方法で、
各原料粉末の重量配合比を種々変更してセラミツクス摺
動部材としての焼結体を作製し、同様の摺動試験により
各セラミツクス摺動部材の摩擦係数を測定した。表１に
示す測定結果から明らかなように、本発明によるセラミ
ツクス摺動部材（表１の試料B11 ）の摩擦係数は、清浄
分散剤の影響がなく、比較材（表１の試料B21，B22）の
摩擦係数に比べ低かつた。The friction coefficient of the ceramic sliding member according to the present invention obtained as described above was measured in the same manner as in Example 1. Also, in the same way as described above,
A sintered body as a ceramics sliding member was manufactured by changing the weight mixing ratio of each raw material powder, and the friction coefficient of each ceramics sliding member was measured by the same sliding test. As is clear from the measurement results shown in Table 1, the friction coefficient of the ceramics sliding member according to the present invention (Sample B11 in Table 1) was not affected by the detergent-dispersant, and the comparative materials (Samples B21 and B22 in Table 1) were used. It was lower than the friction coefficient of.
【００１８】表１に示す測定結果から明らかなように、
摩擦係数が小さいセラミツクス摺動部材を得るための各
原料の最適な重量配合比は、αサイアロン（αsialon）
を８５〜９５wt％、セリア(CeO2)を５〜１５wt％とする
のがよい。上述の重量配合比の範囲から外れると摩擦係
数が大きくなるのは、セリア(CeO2)の添加量が５wt％以
下では、焼結体表面の油保持性が悪く、またセリア(CeO
2)の添加量が１５wt％以上では、焼結体の気孔数が増加
するために、焼結体の表面に凸凹が生じることが原因と
考えられる。As is clear from the measurement results shown in Table 1,
The optimum weight mixing ratio of each raw material to obtain a ceramics sliding member with a small friction coefficient is α sialon
Is preferably 85 to 95 wt% and ceria (CeO 2 ) is 5 to 15 wt%. The coefficient of friction increases when the weight ratio is out of the range described above. The reason is that when the amount of ceria (CeO 2 ) added is 5 wt% or less, the oil retention on the surface of the sintered body is poor, and the ceria (CeO 2 )
It is considered that when the addition amount of 2 ) is 15 wt% or more, the number of pores in the sintered body increases, so that the surface of the sintered body becomes uneven.
【００１９】[0019]
【発明の効果】本発明は上述のように、セラミツクス摺
動部材としてアルミニウム(Al)の酸化物とジルコニウム
(Zr)の酸化物とを主成分とし、セリウム(Ce)の酸化物を
含むセラミツクスにおいて、アルミニウム(Al)の含有量
がアルミナ(Al2O3) に換算して５０〜７５wt％、ジルコ
ニウム(Zr)の含有量がジルコニア(ZrO2)に換算して２０
〜４５wt％、セリウム(Ce)の含有量がセリア(CeO2)に換
算して５〜２０wt％であり、またαサイアロン（sialo
n）とセリウム(Ce)の酸化物を含んでおり、αサイアロ
ンの含有量が８５〜９５wt％であり、セリウム(Ce)の含
有量がセリア(CeO2)に換算して５〜１５wt％であること
を特徴とするものであり、本発明によるセラミツクス摺
動部材を摺動部に用いることにより、摺動部の摩擦抗力
と摩耗量を低減できる。As described above, the present invention provides aluminum (Al) oxide and zirconium as a ceramic sliding member.
In a ceramic containing an oxide of (Zr) as a main component and an oxide of cerium (Ce), the content of aluminum (Al) is 50 to 75 wt% in terms of alumina (Al 2 O 3 ), zirconium ( The content of Zr) converted to zirconia (ZrO 2 ) is 20
~ 45 wt%, the content of cerium (Ce) is 5 to 20 wt% in terms of ceria (CeO 2 ), and α-sialon (sialo)
n) and an oxide of cerium (Ce) are included, the content of α-sialon is 85 to 95 wt%, and the content of cerium (Ce) is 5 to 15 wt% when converted to ceria (CeO 2 ). By using the ceramics sliding member according to the present invention in the sliding portion, it is possible to reduce the frictional drag force and the wear amount of the sliding portion.
【図１】本発明に係るセラミツクス摺動部材の摩擦特性
を表す線図である。FIG. 1 is a diagram showing friction characteristics of a ceramics sliding member according to the present invention.
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【手続補正書】[Procedure amendment]
【提出日】平成７年１１月１５日[Submission date] November 15, 1995
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１３】上述した実施例１とほぼ同様の方法で、各
原料粉末の重量配合比を表１に示すように種々変更して
セラミツクス摺動部材（表１の試料Ａ１１〜Ａ１３およ
びＡ２１〜Ａ２４）としての焼結体を作製し、同様の摺
動試験により各セラミツクス摺動部材の摩擦係数を測定
した。表１に示す測定結果から明らかなように、摩擦係
数が小さいセラミツクス摺動部材を得るための各原料の
最適な重量配合比は、アルミナ（Ａｌ２Ｏ３）を５０〜
７５ｗｔ％、ジルコニア（ＺｒＯ２）を２０〜４５ｗｔ
％、セリア（ＣｅＯ２）を５〜２０ｗｔ％でとするのが
よい。In the same manner as in Example 1 described above, the weight mixing ratio of each raw material powder was variously changed as shown in Table 1, and the ceramic sliding members (samples A11 to A13 and A21 to A24 in Table 1) were changed. Was prepared, and the friction coefficient of each ceramics sliding member was measured by the same sliding test. As is clear from the measurement results shown in Table 1, the optimum weight mixing ratio of each raw material for obtaining a ceramics sliding member having a small friction coefficient is 50 to 50% by weight of alumina (Al 2 O 3 ).
75 wt%, zirconia (ZrO 2 ) 20-45 wt
%, And ceria (CeO 2 ) is preferably 5 to 20 wt%.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１７】上述の如くして得られた本発明によるセラ
ミツクス摺動部材について、実施例１と同様の方法で摩
擦係数を測定した。また、上述したのと同様の方法で、
各原料粉末の重量配合比を種々変更してセラミツクス摺
動部材としての焼結体を作製し、同様の摺動試験により
各セラミツクス摺動部材の摩擦係数を測定した。表１に
示す測定結果から明らかなように、本発明によるセラミ
ツクス摺動部材（表１の試料Ｂ１１，Ｂ１２）の摩擦係
数は、清浄分散剤の影響がなく、比較材（表１の試料Ｂ
２１，Ｂ２２）の摩擦係数に比べ低かった。The friction coefficient of the ceramic sliding member according to the present invention obtained as described above was measured in the same manner as in Example 1. Also, in the same way as described above,
A sintered body as a ceramics sliding member was manufactured by changing the weight mixing ratio of each raw material powder, and the friction coefficient of each ceramics sliding member was measured by the same sliding test. As is clear from the measurement results shown in Table 1, the coefficient of friction of the ceramics sliding members (Samples B11 and B12 in Table 1) according to the present invention was not affected by the detergent-dispersant, and the friction coefficient of the comparative material (Sample B in Table 1).
21, B22) was lower than the friction coefficient.
【手続補正３】[Procedure 3]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１[Correction target item name] Fig. 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】 FIG.
Claims (4)
(Zr)の酸化物とを主成分とし、セリウム(Ce)の酸化物を
含むセラミツクスにおいて、アルミニウム(Al)の含有量
がアルミナ(Al2O3) に換算して５０〜７５wt％、ジルコ
ニウム(Zr)の含有量がジルコニア(ZrO2)に換算して２０
〜４５wt％、セリウム(Ce)の含有量がセリア(CeO2)に換
算して５〜２０wt％であることを特徴とするセラミツク
ス摺動部材。1. Aluminium (Al) oxide and zirconium
In a ceramic containing an oxide of (Zr) as a main component and an oxide of cerium (Ce), the content of aluminum (Al) is 50 to 75 wt% in terms of alumina (Al 2 O 3 ), zirconium ( The content of Zr) converted to zirconia (ZrO 2 ) is 20
A ceramics sliding member characterized in that the content of cerium (Ce) is 5 to 20 wt% in terms of ceria (CeO 2 ).
(Al)の酸化物とジルコニウム(Zr)の酸化物の結晶粒界に
含まれている、請求項１に記載のセラミツクス摺動部
材。2. The cerium (Ce) oxide is aluminum
The ceramics sliding member according to claim 1, wherein the ceramics sliding member is contained in a crystal grain boundary of the oxide of (Al) and the oxide of zirconium (Zr).
ウム(Y) が含まれている、請求項１に記載のセラミツク
ス摺動部材。3. The ceramics sliding member according to claim 1, wherein the oxide of zirconium (Zr) contains yttrium (Y).
酸化物を含んでおり、αサイアロンの含有量が８５〜９
５wt％であり、セリウム(Ce)の含有量がセリア(CeO2)に
換算して５〜１５wt％であることを特徴とするセラミツ
クス摺動部材。4. It contains an oxide of α-sialon and cerium (Ce), and the content of α-sialon is 85-9.
5% by weight, and the content of cerium (Ce) is 5 to 15% by weight in terms of ceria (CeO 2 ), and a ceramics sliding member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7309876A JPH09132449A (en) | 1995-11-02 | 1995-11-02 | Ceramic sliding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7309876A JPH09132449A (en) | 1995-11-02 | 1995-11-02 | Ceramic sliding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09132449A true JPH09132449A (en) | 1997-05-20 |
Family
ID=17998373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7309876A Pending JPH09132449A (en) | 1995-11-02 | 1995-11-02 | Ceramic sliding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09132449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006265081A (en) * | 2005-03-25 | 2006-10-05 | National Institute Of Advanced Industrial & Technology | Self-lubricating composite material and manufacturing method thereof |
| CN115916921A (en) * | 2021-06-14 | 2023-04-04 | 第一稀元素化学工业株式会社 | Composite oxide powder, friction material composition and friction material |
-
1995
- 1995-11-02 JP JP7309876A patent/JPH09132449A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006265081A (en) * | 2005-03-25 | 2006-10-05 | National Institute Of Advanced Industrial & Technology | Self-lubricating composite material and manufacturing method thereof |
| JP4714922B2 (en) * | 2005-03-25 | 2011-07-06 | 独立行政法人産業技術総合研究所 | Self-lubricating composite material and manufacturing method thereof |
| CN115916921A (en) * | 2021-06-14 | 2023-04-04 | 第一稀元素化学工业株式会社 | Composite oxide powder, friction material composition and friction material |
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