JPH04211497A - Sliding member using silicon nitride - Google Patents
Sliding member using silicon nitrideInfo
- Publication number
- JPH04211497A JPH04211497A JP216191A JP216191A JPH04211497A JP H04211497 A JPH04211497 A JP H04211497A JP 216191 A JP216191 A JP 216191A JP 216191 A JP216191 A JP 216191A JP H04211497 A JPH04211497 A JP H04211497A
- Authority
- JP
- Japan
- Prior art keywords
- silicon nitride
- sliding member
- wear
- steel
- high carbon
- 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.)
- Withdrawn
Links
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910052581 Si3N4 Inorganic materials 0.000 title claims abstract description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 229910001315 Tool steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- FXNGWBDIVIGISM-UHFFFAOYSA-N methylidynechromium Chemical group [Cr]#[C] FXNGWBDIVIGISM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 9
- 229910001208 Crucible steel Inorganic materials 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 239000010705 motor oil Substances 0.000 description 6
- 230000013011 mating Effects 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001513 hot isostatic pressing Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000001272 pressureless sintering Methods 0.000 description 1
- -1 rare earth compound Chemical class 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 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
- 239000004071 soot Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Lubricants (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】0001
【０００２】0002
【産業上の利用分野】本発明は、窒化ケイ素セラミック
スと他材料とが摺動するよう構成された窒化ケイ素を用
いた摺動部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding member using silicon nitride, which is constructed so that silicon nitride ceramics and other materials can slide against each other.
【０００３】0003
【従来の技術】エンジニアリングセラミックスは、耐摩
耗性、耐熱性、耐食性等の優れた特性を有するため、メ
カニカルシ―ル、切削工具、ポンプ部品等、広い分野で
使用されている。そして、セラミックス材料は、金属材
料では適用できないより苛酷な条件下で使用できるため
、種々の研究が行われている。例えば、ガスタ―ビンエ
ンジン部品として、炭化ケイ素、窒化ケイ素等がその特
性に応じて使用されている。2. Description of the Related Art Engineering ceramics have excellent properties such as wear resistance, heat resistance, and corrosion resistance, so they are used in a wide range of fields such as mechanical seals, cutting tools, and pump parts. Since ceramic materials can be used under harsher conditions that cannot be applied to metal materials, various studies are being conducted on them. For example, silicon carbide, silicon nitride, etc. are used as gas turbine engine parts depending on their properties.
【０００４】特に、窒化ケイ素セラミックスは、優れた
耐熱性、耐食性、耐摩耗性を有するため、苛酷な条件下
で使用される産業用機械部品に用いる材料として期待さ
れており、ベアリングの転動体であるボ―ルやロ―ラと
して、またはディ―ゼルエンジンの動弁系部品として窒
化ケイ素セラミックスの適用が試みられている。[0004] In particular, silicon nitride ceramics have excellent heat resistance, corrosion resistance, and wear resistance, so they are expected to be used as materials for industrial machine parts used under harsh conditions. Attempts have been made to apply silicon nitride ceramics as certain balls and rollers, or as valve train parts for diesel engines.
【０００５】ところで、例えばベアリングの転動体等と
してセラミックス材料を用いる場合、常圧焼結によるも
のではセラミックス内部に発生する空孔、いわゆるポア
のサイズが大きく、強度が低下するため、比較的ポアの
発生しにくいホットプレス法、あるいは雰囲気加圧焼結
にＨＩＰ（熱間静水圧プレス）処理を組合せる方法によ
って、窒化ケイ素セラミックスの成形、焼結を行ってい
る。By the way, when ceramic materials are used as rolling elements in bearings, for example, pressureless sintering creates pores, or pores, inside the ceramic, which are large in size, reducing strength. Silicon nitride ceramics are formed and sintered by a hot press method that is less likely to generate heat, or by a method that combines atmospheric pressure sintering with HIP (hot isostatic pressing) treatment.
【０００６】[0006]
【発明が解決しようとする課題】このように、窒化ケイ
素の優れた性質を最大限に活かすような焼結方法が様々
な角度から検討されているものの、窒化ケイ素を自動車
部品等の高荷重で摺動の行われる部分に使用する場合、
相手部品の材料によって窒化ケイ素の摩耗量が異なり、
安定した信頼性が得られないという問題がある。同じ窒
化ケイ素を使用しても、その相手材料によって摩耗量が
異なると、この部品を用いた製品の性能は不安定となり
、欠陥、事故の原因ともなりかねない。[Problems to be Solved by the Invention] As described above, sintering methods that make the most of the excellent properties of silicon nitride have been studied from various angles. When used on sliding parts,
The amount of wear on silicon nitride varies depending on the material of the mating part.
There is a problem that stable reliability cannot be obtained. Even if the same silicon nitride is used, if the amount of wear differs depending on the mating material, the performance of products using these parts will be unstable, which may lead to defects and accidents.
【０００７】また、セラミックス製の構造用部品は、従
来の金属製部品に替わって用いられることが多く、自動
車部品等の潤滑油を使用するような高荷重の厳しい条件
下で使用されるため、いかに窒化ケイ素の有する優れた
特性を安定して活かし、信頼性を向上させるかというこ
とが重要課題となっている。すなわち、窒化ケイ素を用
いた場合において、特性のばらつきがなく、耐摩耗性の
高い摺動部材が望まれている。[0007] Furthermore, ceramic structural parts are often used in place of conventional metal parts, and are used under severe conditions with high loads such as when lubricating oil is used in automobile parts. An important issue is how to stably utilize the excellent properties of silicon nitride and improve reliability. That is, when silicon nitride is used, a sliding member that has uniform characteristics and high wear resistance is desired.
【０００８】本発明は、このような課題を解決するため
になされたもので、耐摩耗性に優れ、その特性をばらつ
きなく安定に実現することができる窒化ケイ素を用いた
摺動部材を提供することを目的としている。The present invention has been made to solve these problems, and provides a sliding member using silicon nitride that has excellent wear resistance and can stably realize its characteristics without variation. The purpose is to
【０００９】[0009]
【００１０】0010
【課題を解決するための手段】本発明の窒化ケイ素を用
いた摺動部材は、少なくとも ２つの部材間でこれら部
材同士が摺動するよう配置された、少なくとも ２つの
部材から構成される摺動部材において、窒化ケイ素を主
成分とするセラミックス焼結体からなる第１の部材と、
ダクタイル鋳鉄、高炭素クロム軸受鋼および工具鋼から
選ばれた少なくとも １種よりなる第２の部材とを用い
、前記第１の部材と前記第２の部材とが摺動するよう組
合せて構成したことを特徴としている。[Means for Solving the Problems] A sliding member using silicon nitride of the present invention is a sliding member made of at least two members arranged so that these members slide with each other. In the member, a first member made of a ceramic sintered body containing silicon nitride as a main component;
A second member made of at least one selected from ductile cast iron, high carbon chromium bearing steel, and tool steel is used, and the first member and the second member are combined so as to slide. It is characterized by
【００１１】上記窒化ケイ素を用いた摺動部材は、軸受
やメカニカルシ―ル等に適用することができ、特に高摺
動条件下で使用されるエンジン用部品として有効である
。なお、本発明に適用する窒化ケイ素としては、焼結助
剤として希土類化合物１０重量％以下、酸化アルミニウ
ム ７．５重量％以下、窒化アルミニウム ７．５重量
％以下、酸化チタニウム ５重量％以下を含有するもの
が好ましい。The sliding member using silicon nitride described above can be applied to bearings, mechanical seals, etc., and is particularly effective as engine parts used under high sliding conditions. The silicon nitride applied to the present invention contains 10% by weight or less of a rare earth compound, 7.5% by weight or less of aluminum oxide, 7.5% by weight or less of aluminum nitride, and 5% by weight or less of titanium oxide as a sintering aid. Preferably.
【００１２】窒化ケイ素の相手材となる第２の部材とし
ては、摺動のみではダクタイル鋳鉄が適しており、摺動
だけでなく例えば動弁系部品等のように、振動、衝撃等
を伴う部位に用いる場合は高炭素クロム軸受鋼と組合せ
ることが好ましい。特に、工具鋼との組み合わせの場合
、潤滑油の特性が劣化した場合においても、安定した摩
擦摩耗特性を示すため好ましいものである。また、上記
第２の部材として用いる工具鋼としては、Ｃ ２．１％
〜２．３％、Ｃｒ １１．５％〜１２．５％ 、Ｍｏ
０．７５％〜１．００％ 、Ｖ０．１５％ 〜０．５０
％ の化学組成を有するＡＩＳＩ Ｄ−４ｔｏｏｌ
ｓｔｅｅｌ、またはＪＩＳ 規格でＳＫＤ１１、ＳＫＤ
１に相当する合金工具鋼等が適している。Ductile cast iron is suitable as the second member to be used as a counterpart material for silicon nitride, and is suitable not only for sliding parts but also for parts that are subject to vibrations, shocks, etc., such as valve train parts. When used in applications, it is preferable to combine it with high carbon chromium bearing steel. In particular, when used in combination with tool steel, it is preferable because it exhibits stable friction and wear characteristics even when the properties of the lubricating oil deteriorate. In addition, the tool steel used as the second member has a carbon content of 2.1%.
~2.3%, Cr 11.5%~12.5%, Mo
0.75% ~ 1.00%, V0.15% ~ 0.50
AISI D-4tool with chemical composition of %
steel or JIS standard SKD11, SKD
An alloy tool steel corresponding to No. 1 is suitable.
【００１３】[0013]
【作用】本発明の窒化ケイ素を用いた摺動部材は、窒化
ケイ素セラミックスに対して、ダクタイル鋳鉄、高炭素
クロム軸受鋼および工具鋼から選ばれた少なくとも １
種を相手材料として組合せている。[Operation] The sliding member using silicon nitride of the present invention has silicon nitride ceramics and at least one material selected from ductile cast iron, high carbon chromium bearing steel, and tool steel.
Seeds are used as partner materials in combination.
【００１４】ダクタイル鋳鉄は、窒化ケイ素セラミック
スとの摺動面において、炭素孔の中に潤滑油が保持され
て潤滑効果を発揮する。高炭素クロム軸受鋼は、耐振動
衝撃性の向上に寄与している。また、摺動特性は材料の
組み合わせが大きく影響を及ぼす。例えば、同種材どう
しの組み合わせは、金属材料を始めとしてあまりよくな
いとされている。また、硬ければよいというものでもな
く、材料どうしの適合性が大きく影響すると考えられて
いる。そして、例えば窒化ケイ素と工具鋼との場合も、
はっきりした要因は明らかではないが、いわゆる適合性
がよく、優れた摩擦摩耗特性を示す。これらによって、
本発明の摺動部材は苛酷な条件下での使用に際し、摩耗
量が大幅に低減される。Ductile cast iron exhibits a lubricating effect by retaining lubricating oil in the carbon pores on the sliding surface with silicon nitride ceramics. High carbon chromium bearing steel contributes to improved vibration and shock resistance. Furthermore, the combination of materials has a large effect on the sliding properties. For example, it is said that the combination of similar materials, including metal materials, is not very good. Furthermore, it is not necessarily the case that hardness is good; it is thought that the compatibility of the materials has a large effect. For example, in the case of silicon nitride and tool steel,
Although the exact cause is not clear, it has good compatibility and exhibits excellent friction and wear characteristics. With these,
When the sliding member of the present invention is used under severe conditions, the amount of wear is significantly reduced.
【００１５】[0015]
【実施例】次に、本発明の実施例について説明する。[Example] Next, an example of the present invention will be described.
【００１６】実施例１窒化ケイ素粉末に焼結助剤として
Ｙ２ Ｏ ３ ５重量％と、Ａｌ２ Ｏ ３ ３重
量％とを添加し、原料粉末を調製した。この原料粉末を
、７５０ｋｇ／ｃｍ２ の圧力でプレス成形し、常圧、
１７５０℃、 ２時間の条件で焼結を行い、常圧焼結窒
化ケイ素からなる、６．３ｍｍ×１５．８ｍｍ×１０．
０ｍｍのブロックを作製した。Example 1 A raw material powder was prepared by adding 5% by weight of Y2O3 and 3% by weight of Al2O3 as sintering aids to silicon nitride powder. This raw material powder was press-molded at a pressure of 750 kg/cm2,
Sintering was performed at 1750°C for 2 hours to form a 6.3 mm x 15.8 mm x 10.
A block of 0 mm was produced.
【００１７】一方、高炭素クロム軸受鋼、ダクタイル鋳
鉄および工具鋼からなる、外径３５ｍｍ、幅 ８．７ｍ
ｍのリングを ３種類用意した。なお、この実施例にお
いて工具鋼としては、Ｃ ２．１％〜２．３％、Ｃｒ
１１．５％〜１２．５％ 、Ｍｏ ０．７５％〜１．０
０％、Ｖ ０．１５％ 〜０．５０％ の化学組成を有
するＤ−４ ｔｏｏｌ ｓｔｅｅｌを使用した。On the other hand, it is made of high carbon chromium bearing steel, ductile cast iron and tool steel, and has an outer diameter of 35 mm and a width of 8.7 m.
Three types of m rings were prepared. In this example, the tool steel contains 2.1% to 2.3% C, Cr
11.5%~12.5%, Mo 0.75%~1.0
D-4 tool steel having a chemical composition of 0%, V 0.15% to 0.50% was used.
【００１８】これらのブロックとリングとを用いて、図
１に示すブロック・オン・リング型摩擦摩耗試験を行っ
た。図１において、窒化ケイ素ブロック１は相手材とし
てのリング２に接するよう固定され、矢印Ａ方向に１５
０Ｋｇｆの荷重がかけられている。リング２は矢印Ｂ方
向に、回転数６４０ｒ．ｐ．ｍ． （周速 １．２ｍ／
ｓ ）で回転し、リング２の下部はエンジン油３と接し
ている。エンジン油３としては新しいエンジン油（ＮＥ
Ｗ ＯＩＬ） と使用済のエンジン油（ＳＯＯＴ ＯＩ
Ｌ）とを使用し、油温 １２５℃、油量 １００ｃｃの
条件ではねかけ潤滑を行っている。Using these blocks and rings, a block-on-ring type friction and wear test shown in FIG. 1 was conducted. In FIG. 1, a silicon nitride block 1 is fixed so as to be in contact with a ring 2 as a mating material, and is 15 mm in the direction of arrow A.
A load of 0 kgf is applied. Ring 2 rotates at a rotation speed of 640 r.p.m. in the direction of arrow B. p. m. (Circumferential speed 1.2m/
The lower part of the ring 2 is in contact with the engine oil 3. Engine oil 3 is new engine oil (NE
W OIL) and used engine oil (SOOT OI)
Splash lubrication was carried out using oil temperature 125°C and oil amount 100cc.
【００１９】このような条件の下、窒化ケイ素ブロック
１についてリング２との組合せを変えて、それぞれ ６
時間の連続運転による摩擦摩耗試験を行った。これらの
結果を表１にまとめて示す。Under these conditions, the combinations of the silicon nitride blocks 1 and the rings 2 were changed, and each 6
Friction and wear tests were conducted by continuous operation for hours. These results are summarized in Table 1.
【００２０】比較例１窒化ケイ素ブロック１に対するリ
ング２として、ブロック１と同材料の窒化ケイ素、機械
構造用炭素鋼、およびオ―ステナイト系ステンレス鋼を
用いた。Comparative Example 1 As the ring 2 for the silicon nitride block 1, silicon nitride, which is the same material as the block 1, carbon steel for mechanical structures, and austenitic stainless steel were used.
【００２１】このような組合せで、実施例１と同一条件
でブロック・オン・リング型摩擦摩耗試験を行った。こ
れらの結果を実施例の結果と併せて表１に示す。With this combination, a block-on-ring type friction and wear test was conducted under the same conditions as in Example 1. These results are shown in Table 1 together with the results of Examples.
【００２２】
（以下余白）
表１
新しいエンジ
ン油 使用済エンジン油
平均
比摩耗量＊ 平均 比摩耗量＊
摩擦係数 摩擦係数
実 ダクタイル鋳鉄
０．１０ １．２
０．０９ １８ 施 高
炭素クロム軸受鋼 ０．１１ ８３
０．０６ １５
例 工 具 鋼
０．０６ ９ ０．
０５ １１ 比 窒化ケイ
素 ０．２０ ６４
０ ０．１５ ３２０
較 機械構造用炭素鋼 ０．１
８ ９２０ ０．２０
１８００ 例 オ―ステナイト系
０．１４ １２００
０．２１ ７４００
ステンレス鋼
＊ 比摩耗量の単位は、×１０−
１１ ｍｍ３ ／ｋｇｆ・ｍｍとし、窒化ケイ素と相手
材との合 計値を示した。(Hereafter the margin)
Table 1
New engine oil Used engine oil
average
Specific wear amount* Average Specific wear amount*
Friction coefficient Friction coefficient
Real ductile cast iron
0.10 1.2
0.09 18 High carbon chrome bearing steel 0.11 83
0.06 15
Example tool steel
0.06 9 0.
05 11 Ratio Silicon Nitride 0.20 64
0 0.15 320
Comparison Carbon steel for machine structures 0.1
8 920 0.20
1800 Example Austenitic 0.14 1200
0.21 7400
stainless steel
*The unit of specific wear amount is ×10-
11 mm3/kgf・mm, and the total value of silicon nitride and the mating material is shown.
【００２３】表１の結果から明らかなように、実施例で
使用したダクタイル鋳鉄、高炭素クロム軸受鋼および工
具鋼から選ばれた部材と、窒化ケイ素部材とを組合せた
場合、比摩耗量を大幅に減少させることができた。As is clear from the results in Table 1, when the members selected from the ductile cast iron, high carbon chromium bearing steel and tool steel used in the examples are combined with the silicon nitride member, the specific wear amount can be significantly reduced. was able to be reduced to
【００２４】実施例２続いて、本発明による組合せの窒
化ケイ素を用いた摺動部材を、実際にディ―ゼルエンジ
ンの一部品として適用した例について述べる。Example 2 Next, an example will be described in which a sliding member using a combination of silicon nitride according to the present invention is actually applied as a part of a diesel engine.
【００２５】図２は、ディ―ゼルエンジンにおけるシリ
ンダ・ヘッド弁駆動装置部を示す概略図である。同図に
おいて、弁ロッカ・レバ―１１は弁１２をクロスヘッド
１３を介して弁座埋め金１４に対して着座および離座さ
せるよう配設されている。一方、カム１５によって発生
された運動は、カム１５側のソケット部品Ｓ１と弁ロッ
カ・レバ―１１側のソケット部品Ｓ２との間を、ロング
リンク１６が上下動することにより、カム１５の運動を
弁ロッカ・レバ―１１に伝達している。FIG. 2 is a schematic diagram showing a cylinder head valve drive unit in a diesel engine. In the figure, a valve rocker lever 11 is arranged to seat and unseat the valve 12 with respect to the valve seat filler 14 via the crosshead 13. On the other hand, the movement generated by the cam 15 is controlled by the long link 16 moving up and down between the socket part S1 on the cam 15 side and the socket part S2 on the valve rocker lever 11 side. The signal is transmitted to the valve rocker lever 11.
【００２６】ここで、ロングリンク１６に窒化ケイ素セ
ラミックスを用い、ソケット部品Ｓに高炭素クロム軸受
鋼を用い、シリンダ・ヘッド弁駆動装置を １００時間
作動させた後、摩耗量を測定した。その結果、窒化ケイ
素セラミックスの摩耗量は３６μｍ であった。Here, silicon nitride ceramic was used for the long link 16, high carbon chromium bearing steel was used for the socket part S, and the amount of wear was measured after the cylinder head valve drive device was operated for 100 hours. As a result, the wear amount of silicon nitride ceramics was 36 μm.
【００２７】比較例２実施例２で説明したディ―ゼルエ
ンジンにおけるシリンダ・ヘッド弁駆動装置部において
、ロングリンク１６およびソケット部品Ｓともに、金属
材料（高炭素クロム軸受鋼）を用い、シリンダ・ヘッド
弁駆動装置を １００時間作動させた後、摩耗量を測定
した。このほか、ロングリンク１６およびソケット部品
Ｓとして、窒化ケイ素セラミックスを用いた場合につい
ても同様に試験を行い摩耗量を測定した。これらの結果
は、金属どうしの場合 １２４μｍ 、窒化ケイ素どう
しの場合１１７μｍ の摩耗量であった。Comparative Example 2 In the cylinder head valve drive unit of the diesel engine explained in Example 2, both the long link 16 and the socket part S were made of metal material (high carbon chromium bearing steel), and the cylinder head After operating the valve drive device for 100 hours, the amount of wear was measured. In addition, similar tests were conducted for the case where silicon nitride ceramics were used as the long link 16 and the socket component S, and the amount of wear was measured. These results showed that the amount of wear between metals was 124 μm, and the amount of wear between silicon nitride was 117 μm.
【００２８】このように、窒化ケイ素セラミックスと高
炭素クロム軸受鋼とを組合せた窒化ケイ素構造体は、耐
摩耗性が非常に高く、窒化ケイ素の有する優れた特性を
活かして信頼性の高いエンジン部品を得ることができた
。また、これまで全く着目されていなかった窒化ケイ素
と相手材料との関係に基づく、摺動部材の組合せについ
て、有効な指針を得ることができた。[0028] As described above, the silicon nitride structure, which is a combination of silicon nitride ceramics and high carbon chromium bearing steel, has extremely high wear resistance and can be used as a highly reliable engine component by taking advantage of the excellent properties of silicon nitride. I was able to get In addition, we were able to obtain effective guidelines for combinations of sliding members based on the relationship between silicon nitride and mating materials, which had not received any attention so far.
【００２９】[0029]
【発明の効果】以上説明したように、本発明によれば、
窒化ケイ素セラミックスに対する相手材として、ダクタ
イル鋳鉄、高炭素クロム軸受鋼および工具鋼から選ばれ
た部材を用いて摺動部材とすることにより、苛酷な条件
下での使用に際しても摩耗量を低減し、品質向上を図る
ことができる。[Effects of the Invention] As explained above, according to the present invention,
By using materials selected from ductile cast iron, high carbon chromium bearing steel, and tool steel as the counterpart material for silicon nitride ceramics, the amount of wear can be reduced even when used under harsh conditions. Quality can be improved.
【図１】本発明の実施例で使用したブロック・オン・リ
ング型摩擦摩耗試験を説明するための図である。FIG. 1 is a diagram for explaining a block-on-ring type friction and wear test used in an example of the present invention.
【図２】本発明の一実施例のディ―ゼルエンジンにおけ
るシリンダ・ヘッド弁駆動装置部を示す概要図である。FIG. 2 is a schematic diagram showing a cylinder head valve drive unit in a diesel engine according to an embodiment of the present invention.
１……窒化ケイ素ブロック ２……リング １１…弁ロッカ・レバ― １５…カム １６…ロングリンク Ｓ１、Ｓ２……ソケット部品 1...Silicon nitride block 2...Ring 11... Valve locker lever 15...cam 16...Long link S1, S2...Socket parts
Claims (1)
材同士が摺動するよう配置された、少なくとも ２つの
部材から構成される摺動部材において、窒化ケイ素を主
成分とするセラミックス焼結体からなる第１の部材と、
ダクタイル鋳鉄、高炭素クロム軸受鋼および工具鋼から
選ばれた少なくとも １種よりなる第２の部材とを用い
、前記第１の部材と前記第２の部材とが摺動するよう組
合せて構成したことを特徴とする窒化ケイ素を用いた摺
動部材。Claim 1: In a sliding member composed of at least two members arranged so that these members slide with each other, the first member is made of a ceramic sintered body containing silicon nitride as a main component. 1 member and
A second member made of at least one selected from ductile cast iron, high carbon chromium bearing steel, and tool steel is used, and the first member and the second member are combined so as to slide. A sliding member using silicon nitride, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP216191A JPH04211497A (en) | 1990-01-12 | 1991-01-11 | Sliding member using silicon nitride |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2-4932 | 1990-01-12 | ||
| JP493290 | 1990-01-12 | ||
| JP216191A JPH04211497A (en) | 1990-01-12 | 1991-01-11 | Sliding member using silicon nitride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04211497A true JPH04211497A (en) | 1992-08-03 |
Family
ID=26335490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP216191A Withdrawn JPH04211497A (en) | 1990-01-12 | 1991-01-11 | Sliding member using silicon nitride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04211497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240200541A1 (en) * | 2022-12-20 | 2024-06-20 | Hamilton Sundstrand Corporation | Cylinder barrel |
-
1991
- 1991-01-11 JP JP216191A patent/JPH04211497A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240200541A1 (en) * | 2022-12-20 | 2024-06-20 | Hamilton Sundstrand Corporation | Cylinder barrel |
| EP4390124A1 (en) * | 2022-12-20 | 2024-06-26 | Hamilton Sundstrand Corporation | Cylinder barrel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |