JPS6179704A - Iron-base sintered parts and their manufacture - Google Patents
Iron-base sintered parts and their manufactureInfo
- Publication number
- JPS6179704A JPS6179704A JP20271584A JP20271584A JPS6179704A JP S6179704 A JPS6179704 A JP S6179704A JP 20271584 A JP20271584 A JP 20271584A JP 20271584 A JP20271584 A JP 20271584A JP S6179704 A JPS6179704 A JP S6179704A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- iron
- based sintered
- coating layer
- layer
- 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
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はセラミックスコーティング層を有する鉄系焼結
部品およびその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an iron-based sintered component having a ceramic coating layer and a method for manufacturing the same.
鉄系焼結部品は機械部品に広く用いられておす、ロータ
リコンプレッサのロータやベーンのような耐摩耗性を要
求される用途の機械部品にも用いられている。Iron-based sintered parts are widely used in mechanical parts, such as rotors and vanes of rotary compressors, which require wear resistance.
しかして、耐摩耗性を要求される用途に用いる鉄系焼結
部品においては、焼結体の表面に耐摩耗性を有するセラ
ミックスコーティング層を形成することが行なわれてい
る。Therefore, in iron-based sintered parts used for applications requiring wear resistance, a ceramic coating layer having wear resistance is formed on the surface of the sintered body.
従来、鉄系焼結体にセラミックスコーティング層を形成
するためには＊ Ａ ｉｌ ０３１ Ｔ Ｉ Ｎ
などのセラミックス材料を溶射により焼結体表面に接着
する方法が行なわれている。しかしながら、この溶射法
により形成したセラミックスコーティング層は緻密さに
乏しく焼結体との密着力が弱くて充分な耐摩耗性を有す
ることができず、従って鉄系焼結体に良好な耐摩耗性を
与えることができないという問題があった。Conventionally, in order to form a ceramic coating layer on an iron-based sintered body, *Ail 031 T I N
A method of adhering ceramic materials such as ceramic materials to the surface of a sintered body by thermal spraying has been used. However, the ceramic coating layer formed by this thermal spraying method is not dense enough and has weak adhesion to the sintered body, so it cannot have sufficient wear resistance. The problem was that it was not possible to give
本発明は前記事１青に基づいてなされたもので、耐摩耗
性に優れたセラミックスコーティング層を何する鉄系焼
結部品およびその製造方法を提供することを目的とする
。The present invention was made based on the above-mentioned article 1, and an object of the present invention is to provide an iron-based sintered part having a ceramic coating layer with excellent wear resistance, and a method for manufacturing the same.
本発明の鉄系焼結部品は、焼結体表面部にＦｅ、Ｏ，及
びＣｒ２Ｏ３を主体とするコーティング層が形成されて
いることを特徴とするものである。The iron-based sintered part of the present invention is characterized in that a coating layer mainly composed of Fe, O, and Cr2O3 is formed on the surface of the sintered body.
Ｆｅ、Ｏ，及びＣｒ 、 Ｏ８を主体とする層は、鉄系
焼結体の粒子である鉄酸化物（Ｆｅ３Ｏ４）の間にクロ
ム酸化物（Ｃｒ、０３）が散在して両者が一体となった
状態で焼結体表面部に形成され、組織が緻密であるとと
もに基材である焼結体に強固に結合して優れた耐摩耗性
を有している。In the layer mainly composed of Fe, O, Cr, and O8, chromium oxide (Cr, 03) is interspersed between iron oxide (Fe3O4) particles of the iron-based sintered body, and the two are integrated. It is formed on the surface of the sintered body in a state in which it has a dense structure and is firmly bonded to the sintered body as a base material, thus having excellent wear resistance.
セラミックスコーティング層にクロム酸化物（ｃｒ！Ｏ
ｓ）を用いるのは、硬度の向上と摩擦係数を低下させる
ためである。Chromium oxide (cr!O) is added to the ceramic coating layer.
The reason for using s) is to improve the hardness and lower the coefficient of friction.
なおコーティング層は、焼結体に接する側にＦｅ３Ｏ４
を主体とする層を形成することにより、基材との接合力
が大となる。また表面側にＣｒ２Ｏ、を主体とする層を
形成することＫより耐摩耗性が改善される。更に表面側
の層に人Ａ！！Ｏ８及びまたはＳｔＯ，を含むものは更
に耐摩耗性が向上する。The coating layer has Fe3O4 on the side in contact with the sintered body.
By forming a layer mainly consisting of , the bonding force with the base material is increased. Further, by forming a layer mainly composed of Cr2O on the surface side, wear resistance is improved compared to K. Furthermore, there is a person A on the surface side layer! ! Those containing O8 and/or StO have further improved wear resistance.
本発明の鉄系焼結部品の製造方法は、鉄系焼結体にＣｒ
Ｏ３を主成分とするを含浸する工程と、ＣｒＯ３を含浸
した鉄系焼結体を焼成する工程とを具備することを特徴
とするものである。The method for manufacturing iron-based sintered parts of the present invention includes adding Cr to the iron-based sintered body.
This method is characterized by comprising a step of impregnating O3 as a main component, and a step of firing the iron-based sintered body impregnated with CrO3.
本発明の製造方法では、はじめに鉄系焼結体をタンクに
入れたＣ ｒ Ｏ３を主成分とする液の中に浸漬し、焼
結体の多数の気孔中にＣｒＯ３液を含浸させる。次いで
、Ｃｒ Ｏ，液を含浸した鉄系１尭結体を温度５００〜
６００℃で焼成して酸化処理を施し、焼結体表面部にＦ
ｅ ３Ｏ４及びＣｒ２Ｏ３を主体とする層を形成する
。焼成温度を５００〜６００℃（望ましくは５５０℃付
近）とするのはＣｒ Ｏ５をＣｒ ｔ Ｏｓに変化させ
るためである。そして、この含浸工程と焼成工程を組合
せて１サイクルとして複数回繰り返すことにより、鉄系
焼結体の表面部て所定厚さの緻密で強固なＦｅ、Ｏ。In the manufacturing method of the present invention, first, an iron-based sintered body is immersed in a liquid containing CrO3 as a main component in a tank, and the CrO3 liquid is impregnated into many pores of the sintered body. Next, the iron-based single crystal impregnated with CrO and liquid was heated to a temperature of 500~
The sintered body is fired at 600°C to undergo oxidation treatment, and F is applied to the surface of the sintered body.
e A layer mainly composed of 3O4 and Cr2O3 is formed. The reason why the firing temperature is set to 500 to 600°C (preferably around 550°C) is to convert CrO5 to CrtOs. By repeating this impregnation step and firing step multiple times as one cycle, dense and strong Fe and O of a predetermined thickness are formed on the surface of the iron-based sintered body.
＋Ｃｒ ｔ Ｏｓからなるセラミックスコーティング層
を形成する。層厚は約５〜５０μ である。なお、ｉｆ
Ｔ ４ｅサイクルとサイクルとの間に鉄系焼結体にＬ３
Ｋ加工を行なっても良い。この加工は鉄系焼結体の精
度を得るため及び硬度を大にするために有効であり、ま
た鉄系焼結体の仕上げ加工を僚用することができる。A ceramic coating layer made of +Cr t Os is formed. The layer thickness is approximately 5-50 .mu.m. Furthermore, if
L3 is added to the iron-based sintered body between T4e cycles.
K processing may also be performed. This processing is effective for obtaining precision and increasing hardness of the iron-based sintered body, and can also be used for finishing processing of the iron-based sintered body.
また、鉄系焼結体にＣｒＯ３を含浸する工程の前段階に
おいて、鉄系焼結体に水蒸気処理を施すと、より強固で
緻密なコーティング層を形成でき、且つコーティング：
脅の厚さを調整でき、効果的である。すなわち、水蒸気
処理を施すことによシ鉄系焼結体のｒｅ粒子を酸化させ
てＦｅ、Ｏ，を形成する。その後に鉄系焼結体ＫＣｒｙ
３を含浸すると、Ｃｒ Ｏ８がＦｅ５０．の聞に良好に
分散して含浸することができるからである。In addition, if the iron-based sintered body is subjected to steam treatment before the step of impregnating the iron-based sintered body with CrO3, a stronger and denser coating layer can be formed, and the coating:
The thickness of the threat can be adjusted and is effective. That is, by performing steam treatment, the re particles of the iron-based sintered body are oxidized to form Fe, O, and so on. After that, iron-based sintered body KCry
3, CrO8 becomes Fe50. This is because it can be well dispersed and impregnated between the layers.
また水蒸気処理により形成するＦｅ、Ｏ，の厚さを調整
することによ）、セラミックコーティング層の厚さを調
整できる。水蒸気処理の温度は５５０℃である。Furthermore, by adjusting the thickness of Fe, O, formed by steam treatment), the thickness of the ceramic coating layer can be adjusted. The temperature of the steam treatment is 550°C.
さらに、本発明による製造方法の前段階において、鉄系
焼結体にＡＪ、Ｏ，及びまたは８ ｉ ０．を含むＣｒ
Ｏｌからなる液を含浸する工程と、この含浸後に鉄系
焼結体を焼成（温度約５５０℃）の温度で焼成する工程
を組合せて行なうと、焼結体との結合力がより大きなセ
ラミックスコーティング層を形成できる。すなわち、鉄
系焼結体の表面部に底層Ｆ ｅ ｓ Ｏ４主体層、中間
層Ｆｅ３Ｏ４＋Ｃｒ２Ｏ３ ＋ＡＪ２Ｏ３ ＋８ ｉ
０２主体層および表面層Ｃｒ２Ｏ３ ＋ ＡＡ！２Ｏ３
＋ Ｓ ｌ ０２主体層からなる三層構造のセラミッ
クスコーティング層を形成できる。Furthermore, in the preliminary stage of the manufacturing method according to the present invention, AJ, O, and or 8 i 0. containing Cr
By combining the process of impregnating with a liquid consisting of Ol and the process of firing the iron-based sintered body at a temperature of about 550°C after this impregnation, a ceramic coating with greater bonding strength with the sintered body can be created. Can form layers. That is, on the surface of the iron-based sintered body, there is a bottom layer Fe s O4 main layer and an intermediate layer Fe3O4 + Cr2O3 + AJ2O3 +8 i
02 Main layer and surface layer Cr2O3 + AA! 2O3
+ A ceramic coating layer with a three-layer structure consisting of S l 02 main layers can be formed.
基層のＦｅ、Ｏ，を主体とする層は余興基体との接着力
を大きくするもので５〜１０μあることが好ましい。ま
た、表面層にｈｇ２Ｏ． 、 Ｓ ｒ Ｏ，を含むＣｒ
２Ｏ３を形成しであるので耐摩耗性に潰れる。The base layer, which is mainly composed of Fe and O, increases the adhesive force with the entertainment base, and preferably has a thickness of 5 to 10 μm. In addition, hg2O. , S r O, containing Cr
Since it forms 2O3, it is resistant to wear and collapses.
表面層を前記のように複合層とする場合、Ｃｒ Ｏ８含
浸工程の前段階において水蒸気処理を行なうことにより
、複合層の層厚さを制佃することができる。When the surface layer is formed into a composite layer as described above, the thickness of the composite layer can be controlled by performing steam treatment at a stage prior to the CrO8 impregnation step.
（実施例１）
焼結相ｉ ６．７１／ｒｄ 、組成がＦｅ −５Ｃｒ−
ＩＮｉ−Ｑ、９Ｃｕ−１，３Ｃからなる焼結体の空孔を
鉄酸化物で充填し、気密性を持たせた後に研摩加工し、
ロータリコンプレッサー用ベーンを製造した。次すで、
このベーン材に温！約５７０℃、０．５時間の条件で水
蒸気処理を施し、研摩表面にＦ ｅ、 ｏ、からなる酸
化波膜を形成した。このベーン材をＣｒ Ｏ３液に浸漬
、乾燥し、約５５０°Ｃ１０、５時間で焼成した後冷却
させる。この浸漬から冷却までの工程を１０回繰り返し
施した。そしてこのベーンをロータリ・コンプレッサー
に組込み、コンプレッサーを運転した結果、ベーンの摩
耗は大変少なかった。(Example 1) Sintered phase i 6.71/rd, composition is Fe-5Cr-
The pores of the sintered body made of INi-Q, 9Cu-1,3C were filled with iron oxide, made airtight, and then polished.
Manufactured vanes for rotary compressors. Next,
This vane material is warm! Steam treatment was performed at approximately 570° C. for 0.5 hours to form an oxidized wave film consisting of Fe and O on the polished surface. This vane material is immersed in a CrO3 solution, dried, fired at about 550° C. for 5 hours, and then cooled. This process from dipping to cooling was repeated 10 times. When this vane was installed in a rotary compressor and the compressor was operated, wear on the vane was extremely low.
（実施例２） 実細例１と同様の鉄系焼結体でなるベーンを製造した。(Example 2) A vane made of the same iron-based sintered body as in Detailed Example 1 was manufactured.
このベーンにまず８１，０．及びＳ ｉ Ｏ！を含むＣ
ｒ Ｏ，液に浸漬、乾燥し、約５５０°Ｃ１０，５時間
で焼成した。ついで、水蒸気処理を施こした。得られた
ベーン材に更にＣｒＯ．液を浸漬、乾燥（約５５０℃）
する工程を１０回繰返した。得られたベーンのコーティ
ング層は、基体側から５〜１０／ｊのＦｅ、０４主体層
、約５μのＦｅ５０４ ＋ Ｃｒ、 ｏ、 、 ５ｌｔ
０３及びＳ ｉ ０２層及び３Ｏ〜４０μの８１２Ｏ３
、 Ｓ ｒ Ｏ＠を含むＣｒ、Ｏｓ Ｉ？ｉで形成さ
れていた。このベーンの運転後の耐摩耗性は、実施例１
と同等以上であった
〔発明の効果〕
以上説明したように本発明によれば、焼結体の表面部に
Ｆｅ３Ｏ４及びＣｒ ！ ０３を主体とする耐摩耗性に
優れたセラミックコーティング層を形成した鉄系焼結部
品を得ることができ、この鉄系焼結部品を耐摩耗性を要
求される機械部品に有効に用いることができる。First of all, 81.0 on this vane. and S i O! C containing
It was immersed in rO solution, dried, and fired at about 550°C for 10.5 hours. Then, a steam treatment was performed. The obtained vane material was further coated with CrO. Immerse in liquid and dry (approximately 550℃)
The process was repeated 10 times. The coating layer of the obtained vane consists of 5-10/j Fe, 04 main layer, about 5μ Fe504 + Cr, o, 5lt from the base side.
03 and S i 02 layer and 3O~40μ 812O3
, Cr containing S r O@, Os I? It was formed by i. The wear resistance of this vane after operation was determined in Example 1.
[Effect of the Invention] As explained above, according to the present invention, Fe3O4 and Cr! It is possible to obtain iron-based sintered parts on which a ceramic coating layer with excellent wear resistance is formed, mainly composed of 03, and this iron-based sintered part can be effectively used for mechanical parts that require wear resistance. can.
Claims (6)
３を主体とするコーティング層を形成したことを特徴と
する鉄系焼結部品。(1) Fe_3O_4 and Cr_2O_ on the surface of the sintered body
An iron-based sintered part characterized by forming a coating layer mainly composed of 3.
Ｏ＿４を主体とする層を形成し表面側にＣｒ＿２Ｏ＿３
を主体とする層を形成してなる特許請求の範囲第１項に
記載の鉄系焼結部品。(2) The coating layer has Fe_3 on the side in contact with the sintered body.
A layer mainly composed of O_4 is formed and Cr_2O_3 is formed on the surface side.
The iron-based sintered part according to claim 1, which is formed by forming a layer mainly consisting of:
＿２を含むものである特許請求の範囲第２項記載の鉄系
焼結部品。(3) The layer on the surface side is Sl_2O_3 and/or SiO
The iron-based sintered part according to claim 2, which contains _2.
浸する工程と、ＣｒＯ＿３を含浸した鉄系焼結体を焼成
する工程とを具備することを特徴とする鉄系焼結部品の
製造方法。(4) An iron-based sintered part characterized by comprising a step of impregnating an iron-based sintered body with a substance containing CrO_3 as a main component and a step of firing the iron-based sintered body impregnated with CrO_3. Production method.
特許請求の範囲第４項に記載の鉄系焼結部品の製造方法
。(5) The method for manufacturing iron-based sintered parts according to claim 4, wherein the firing temperature of the iron-based sintered body is 500 to 600°C.
成分とするものを含浸する特許請求の範囲第４項または
第５項に記載の鉄系焼結部品の製造方法。(6) The method for manufacturing an iron-based sintered part according to claim 4 or 5, wherein the iron-based sintered body is impregnated with a substance containing CrO_3 as a main component after steam treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20271584A JPS6179704A (en) | 1984-09-27 | 1984-09-27 | Iron-base sintered parts and their manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20271584A JPS6179704A (en) | 1984-09-27 | 1984-09-27 | Iron-base sintered parts and their manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6179704A true JPS6179704A (en) | 1986-04-23 |
| JPH037721B2 JPH037721B2 (en) | 1991-02-04 |
Family
ID=16461954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20271584A Granted JPS6179704A (en) | 1984-09-27 | 1984-09-27 | Iron-base sintered parts and their manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6179704A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5514833A (en) * | 1978-07-17 | 1980-02-01 | Babcock Hitachi Kk | Heat-treating method |
| JPS59170276A (en) * | 1983-03-14 | 1984-09-26 | Toshiba Corp | Sintered member |
| JPS60224760A (en) * | 1984-04-21 | 1985-11-09 | Toyota Motor Corp | Sliding member having excellent wear resistance at high temperature |
-
1984
- 1984-09-27 JP JP20271584A patent/JPS6179704A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5514833A (en) * | 1978-07-17 | 1980-02-01 | Babcock Hitachi Kk | Heat-treating method |
| JPS59170276A (en) * | 1983-03-14 | 1984-09-26 | Toshiba Corp | Sintered member |
| JPS60224760A (en) * | 1984-04-21 | 1985-11-09 | Toyota Motor Corp | Sliding member having excellent wear resistance at high temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH037721B2 (en) | 1991-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4615913A (en) | Multilayered chromium oxide bonded, hardened and densified coatings and method of making same | |
| JPH02217381A (en) | Method for protecting product of carbon-containing composite material from oxidation,and product protected thereby | |
| US3956531A (en) | Chromium oxide densification, bonding, hardening and strengthening of bodies having interconnected porosity | |
| JPS6111907B2 (en) | ||
| EP0396240B1 (en) | Ceramic meterial and method for producing the same | |
| WO1979000716A1 (en) | Improvements in or relating to bonding plastics materials to steel | |
| DE60016466D1 (en) | METHOD FOR PRODUCING LOW-DENSITY POLYMER OR METAL-MATRIX SUBSTRATES CERAMIC AND / OR METAL-CERAMIC COATINGS AND LOW-DENSITY COMPONENTS OF HIGH STRENGTH THUS MADE | |
| GB1466075A (en) | Treating refractory or ceramic bodies or coatings | |
| JPS6179704A (en) | Iron-base sintered parts and their manufacture | |
| US5039550A (en) | Colloidal processing method for coating ceramic reinforcing agents | |
| JPS60125375A (en) | Metal-ceramic joined body and manufacture thereof | |
| JPS6046377A (en) | Preparation of ceramic/metal bonded material | |
| JPS61146775A (en) | Carbon fiber reinforced carbon material | |
| JPS6364906A (en) | Glassy carbon plate | |
| JP2951952B2 (en) | Magnetic recording substrate | |
| JPH0452208B2 (en) | ||
| JPH03115581A (en) | Production of wear resistant member | |
| JP2862282B2 (en) | Manufacturing method of fiber reinforced glass substrate | |
| JPH0499884A (en) | Hardened ceramic coating film and production thereof | |
| JPS6353278A (en) | Production of protective layer | |
| JPH02193312A (en) | Magnetic recording medium | |
| JPH03257074A (en) | Fiber-reinforced composite material | |
| JPH01133720A (en) | Carbon fiber/carbon composite material having modified surface | |
| RU2283727C1 (en) | Composition metallic material article production process | |
| JPH05117857A (en) | Coating member |