JPS6362802A - Porous metallic sintered body - Google Patents
Porous metallic sintered bodyInfo
- Publication number
- JPS6362802A JPS6362802A JP20728286A JP20728286A JPS6362802A JP S6362802 A JPS6362802 A JP S6362802A JP 20728286 A JP20728286 A JP 20728286A JP 20728286 A JP20728286 A JP 20728286A JP S6362802 A JPS6362802 A JP S6362802A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- porous metallic
- porous
- oxidation
- metallic sintered
- 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
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 229910001026 inconel Inorganic materials 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910007277 Si3 N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、軸受、フィルター、熱交換器、鋳型等の構造
用部材や機能部材の材料として使用される三次元貫通孔
を存する多孔質金属焼結体に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a porous metal having three-dimensional through holes, which is used as a material for structural members and functional members such as bearings, filters, heat exchangers, and molds. Regarding sintered bodies.
従来かかる多孔質金属焼結体の基材として、その用途に
応して、銅系、鉄系、さらにはモネルメタル、インコネ
ル、ハステロイ等の金属１合金がが使用されてきている
。Conventionally, as a base material for such a porous metal sintered body, copper-based, iron-based, and metal 1 alloys such as Monel metal, Inconel, and Hastelloy have been used depending on the purpose.
しかしながら、これらの金属焼結体からなる多孔質体は
、その用途に対応した使用条件に耐えるべき耐摩耗性、
耐熱性、耐食性、耐酸化性に限界があり、それに代わる
べきものとして、例えば特開昭６１− ］、１７１８２
号公報、特開昭６１−６１６９号公報等に記載されてい
るように、上記特性において優れた各種セラミック材か
らなる多孔質体が種々提案されている。However, porous bodies made of these metal sintered bodies have poor wear resistance and are required to withstand the usage conditions corresponding to their intended use.
There are limits to heat resistance, corrosion resistance, and oxidation resistance, and as an alternative, for example, JP-A-61-], 17182
As described in Japanese Patent Application Laid-Open No. 61-6169, etc., various porous bodies made of various ceramic materials that are excellent in the above characteristics have been proposed.
しかしながら、セラミック材は金属と比べ、機械的性質
と製作性、それにコストにおいて問題があり、上記用途
のための多孔質体としては金属からなる焼結体が依然と
して主流をなしている。However, compared to metals, ceramic materials have problems in mechanical properties, ease of manufacture, and cost, and sintered bodies made of metal are still the mainstream porous bodies for the above-mentioned applications.
本発明の目的は、金属としての加工性と機械的性質等金
属としての利点は何等撰することなく、耐摩耗性、耐熱
性、耐食性、耐酸化性において優れた保護と強化機能を
有する材料の特色を発揮できる多孔質焼結体を提供する
ことにある。The purpose of the present invention is to create a material that has excellent protective and reinforcing functions in terms of wear resistance, heat resistance, corrosion resistance, and oxidation resistance, without giving away any of the advantages of a metal such as workability and mechanical properties. The object of the present invention is to provide a porous sintered body that can exhibit its special characteristics.
本発明は、立体的貫通孔を存する多孔質金属焼結体の内
部孔部も含めて全表面に、保護強化被覆層を形成するこ
とによって上記目的を達成したものである。The present invention achieves the above object by forming a protective reinforcing coating layer on the entire surface of a porous metal sintered body having three-dimensional through holes, including the internal pores.
保護強化被覆層を形成すべき材質としては、多孔質体が
使用される環境に応じて、そのニーズに対応できる材料
であって基材となる金属との接合性が良いものを使用す
る。As the material for forming the protective reinforcement coating layer, a material that can meet the needs of the environment in which the porous body is used and that has good bonding properties with the metal serving as the base material is used.
例えば、Ｆｅ−Ｃｕ−Ｃ系の多孔質焼結体に潤滑油を浸
透させた含油軸受の場合には、硬度が裔り、摩擦係数が
小さいＴＬ ）Ｉｆ＋ ｚｒ、 Ｓｔ＋Ｍｏ等の単体、
炭化物、窒化物、酸化物、炭窒化物、炭酸化物、酸窒化
物又は炭酸窒化物の単体化合物、或いはこれらの２種以
上の複合物を被覆する。For example, in the case of an oil-impregnated bearing in which lubricating oil is infiltrated into a Fe-Cu-C porous sintered body, the hardness is inherited and the coefficient of friction is small.
A single compound of carbide, nitride, oxide, carbonitride, carbonate, oxynitride, or carbonitride, or a composite of two or more thereof is coated.
また、各種油圧機器に用いられる鉄系のフィルター或い
は熱交換器には、酸、アルカリ等に強いＳｉ３ Ｎ４
、 ＺｒＯ２、ＳｉＣ，Ａ１２０３ 、 ＢＮ等のセラ
ミック材やＴｉ等の金属を被覆する。In addition, Si3 N4, which is resistant to acids and alkalis, is used for iron-based filters or heat exchangers used in various hydraulic equipment.
, ZrO2, SiC, A1203, BN, or other ceramic materials or Ti or other metals.
さらに、鋳型として用いられてきた鉄系多孔質体には、
耐酸化性において優れ、しかも耐摩耗性を存して繰り返
し使用に耐え得るＡｌ１ ｏａ 。Furthermore, iron-based porous materials that have been used as molds have
Al1 oa has excellent oxidation resistance, has wear resistance, and can withstand repeated use.
ＺｒＯ２、Ｃｒ等を使用する０本発明において、金属焼
結体に被覆される保護強化層の厚みは、その用途によっ
ても異なるが、通常０．５〜１００μｍの厚みであれば
充分である。In the present invention, which uses ZrO2, Cr, etc., the thickness of the protective reinforcing layer coated on the metal sintered body varies depending on its use, but a thickness of 0.5 to 100 μm is usually sufficient.
本発明の多孔質金属焼結体には、ＰＶＤ、 ＣＶＤ等公
知の被覆方法が採用できるが、特に内部の貫通孔内面に
まで、被覆層を形成するためには、とくにＣｖＤあるい
はプラズマＣｖＤが好適である。Known coating methods such as PVD and CVD can be used for the porous metal sintered body of the present invention, but CvD or plasma CVD is particularly suitable for forming a coating layer even on the inner surface of the internal through-hole. It is.
以下、実施例によって本発明を説明する。The present invention will be explained below with reference to Examples.
実施例１ （軸受）
Ｃｕ ２０重量％、Ｆｅ ７５重量％及びＣ５重■％か
らなる混合粉末を加圧成形し、１１００℃で１時間焼結
した多孔率２１％の内径４０ｍｍ、外径５０ｍ５．長さ
５０−の軸受を作製し、余分な析出Ｃｕは混酸で処理し
除去した。これに、温度１０００℃に加熱したインコネ
ル製の反応炉に、Ｔｉｃ １４ ２ｖｏｌχ、Ｎ２１８
νｏｌχ、Ｎ２２０νｏｌχからなる混合気体を導入し
、炉内圧力が３５＋ｕｅＨｇの条件でＣＶＤ法により、
ＴｉＮを表面及び気孔壁面に被覆した。ＴｉＮの被覆の
状態は、外面被覆厚が２０μ園、軸受表面から内面に向
かって薄くなる傾向を示すが、最深部でも７μｍの厚み
はあった。Example 1 (Bearing) A mixed powder consisting of 20% by weight of Cu, 75% by weight of Fe, and 5% by weight of C was pressure-molded and sintered at 1100°C for 1 hour to form a bearing with a porosity of 21%, an inner diameter of 40 mm, and an outer diameter of 50 mm. A bearing with a length of 50 mm was produced, and excess precipitated Cu was removed by treatment with a mixed acid. To this, Tic 14 2volχ, N218 was added to an Inconel reactor heated to 1000°C.
A mixed gas consisting of νolχ and N220νolχ was introduced, and the CVD method was carried out under the condition that the furnace pressure was 35+ueHg.
The surface and pore walls were coated with TiN. Regarding the condition of the TiN coating, the outer coating thickness was about 20 μm, and although it tended to become thinner from the bearing surface toward the inner surface, it was still 7 μm thick at the deepest part.
この被覆形成により、摩擦係数は０．０７から０．０１
と８６％小さくなり、軸材質がＮｉ−Ｃｒ鋼、軸間隙３
０／１０００１〜５０／１０００ｍｍ 、周速１１５ｍ
／ｓｉｎ 、荷重１０ｋｇ、潤滑油として＃３０モビー
ル油、油補給０．０５ｍｇ／ｃ＋Ｊ／ｈｒの条件下で軸
受の温度が従来の８０℃から３０℃以下となり常温と変
わりなかった。２０００時間連続使用で摩耗減量は、無
被覆の場合の５０分の１に減少した。By forming this coating, the coefficient of friction increases from 0.07 to 0.01.
The shaft material is Ni-Cr steel and the shaft gap is 3.
0/10001~50/1000mm, peripheral speed 115m
/sin, a load of 10 kg, #30 mobile oil as a lubricating oil, and oil replenishment of 0.05 mg/c+J/hr, the temperature of the bearing decreased from the conventional 80° C. to 30° C. or less, which was the same as room temperature. After 2000 hours of continuous use, the wear loss was reduced to 1/50 of that without coating.
実施例２ （フィルター及び熱交換器）ミル・スケー
ル還元粉（川崎製鉄Ｋ Ｉ Ｐ ２５５Ｍ）に粘結材を
添加し０．５ｔ／−の成形圧で成形し、粘結材を除去す
るため、真空中で６５０℃１時間加熱後、Ｎ２中で１１
００℃１時間で焼結し多孔率４６％の焼結体を作製して
、この焼結体を１０００℃に加熱したインコネル製の反
応炉中にＴｉｃ ｉｔ令 ２ｖｏｌχ。Example 2 (Filter and heat exchanger) A caking agent was added to mill scale reduced powder (Kawasaki Steel K I P 255M) and molded at a molding pressure of 0.5t/-, and the caking agent was removed. After heating at 650°C for 1 hour in vacuum, heating at 650°C for 1 hour in N2
A sintered body with a porosity of 46% was produced by sintering at 00°C for 1 hour, and the sintered body was placed in an Inconel reactor heated to 1000°C.
Ｎ２９６ｖｏｌχ、 ＣＩ令２ｖｏ ｌχからなる混合
気体を導入し、炉内圧力８０１ｍＨＨの条件の下で最初
にＴｉＣを５μｍ被覆し、更に温度１０００℃に加熱し
た上記反応炉中にＴｉＣｊ！ ４２ｖｏｌＸ、 Ｈ２７
８ｖｏｌχ＊ Ｎ２２０ＶＯＩχからなる混合気体を導
入し、炉内圧力８５ ｔｍ Ｈｇの条件の下で、その上
層にＴｉＮを５μｍ形成した。被覆形成後の気孔率は３
０％に低減したが、実際の稼働には全く影響のないもの
であった。A gas mixture consisting of 296 vol. 42volX, H27
A mixed gas consisting of 8 vol.chi. The porosity after coating is 3
Although it was reduced to 0%, it had no effect on actual operation.
この処理フィルターを３５℃、５χ塩酸中に２４時間放
置、腐食減率を調べた。無被覆の場合には減量は３０！
で著しく腐食していたが、Ｔｉｃ−ＴｉＮを被覆したも
ののＭｌはＯであった。This treated filter was left in 5x hydrochloric acid at 35°C for 24 hours, and the corrosion loss rate was examined. In the case of no coating, the weight loss is 30!
However, the Ml of the Tic-TiN coated material was O.
実施例３ （！！型）
ミル・スケール還元粉（川崎製鉄Ｋ Ｉ Ｐ ２５５Ｍ
）を１．Ｏｔ／−の成形圧で成形し、Ｎ２中で１１００
℃１時間で焼結し多孔率３９％焼結体を作製した。Example 3 (!! type) Mill scale reduced powder (Kawasaki Steel K I P 255M
) to 1. Molded at a molding pressure of Ot/-, 1100 m in N2
C. for 1 hour to produce a sintered body with a porosity of 39%.
この焼結体に最初に、温度を１０００℃に加熱したイン
コネル製の反応炉中にＴ１Ｃｌ令 ２ｖｏｌχ、Ｎ２９
６ｖｏｌχ、ＣＩ＋２νｏｌχからなる混合気体を導入
し、炉内圧力８０ｍＨｇの条件の下でＴｉＣを５μ−厚
被覆し、更にその上層に、温度１０００℃に加熱したイ
ンコネル製の反応炉中に、” Ｃ１１ｓ ５．４ｖｏｌ
χ、Ｎ２９２．６ｖｏｌＸ、 ＣＯ２２ｖｏｌχからな
る混合気体を導入し、炉内圧力５０ｎ＋ｌＩｇの条件で
Ｃ１２Ｃ３を２μ朗厚被覆した。被覆形成後の気孔率は
３２χに低下したが、鋳型としてのガス放出機能には全
く影響せず、抗折力は無被覆の場合の２倍に増大した。This sintered body was first placed in an Inconel reactor heated to 1000°C with T1Cl 2volχ, N29
A mixed gas consisting of 6volχ, CI+2νolχ was introduced into a reactor made of Inconel, which was coated with TiC to a thickness of 5μ under the condition of an internal pressure of 80mHg, and the top layer was heated to a temperature of 1000°C. .4vol
A mixed gas consisting of χ, N292.6 volX, and CO22 volχ was introduced, and C12C3 was coated to a thickness of 2μ under the condition of an internal pressure of 50n+lIg. Although the porosity after the coating was formed decreased to 32χ, it did not affect the gas release function as a mold at all, and the transverse rupture strength increased to twice that of the uncoated case.
６００℃、８００℃、 １０００℃のもとて６時間酸化
試験を行ったが、無被覆のものの酸化増量の１／２〜１
／３を示し、大幅に耐酸化性が向上した。An oxidation test was conducted at 600℃, 800℃, and 1000℃ for 6 hours, and the weight gain due to oxidation was 1/2 to 1 of that of the uncoated one.
/3, and the oxidation resistance was significantly improved.
本発明は従来の多孔質金属焼結体の強度１耐酸化性、耐
食性、耐摩耗性が大幅に向上しその耐用性を大幅に向上
でき、しかも、全体がセラミックスからなる多孔質体に
比べ、機械的性質が優れ格段に安価でしかも筒便に製造
できる。The present invention can significantly improve the strength, oxidation resistance, corrosion resistance, and abrasion resistance of conventional porous metal sintered bodies, and greatly improve their durability.Moreover, compared to porous bodies made entirely of ceramics, It has excellent mechanical properties, is extremely inexpensive, and can be manufactured easily.
Claims (1)
通孔の壁面を含む全表面に、保護強化層を形成してなる
ことを特徴とする多孔質金属焼結体。1. A porous metal sintered body having a three-dimensional through hole, the porous metal sintered body comprising a protective reinforcing layer formed on the entire surface of the porous metal sintered body including the wall surface of the three-dimensional through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20728286A JPS6362802A (en) | 1986-09-03 | 1986-09-03 | Porous metallic sintered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20728286A JPS6362802A (en) | 1986-09-03 | 1986-09-03 | Porous metallic sintered body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6362802A true JPS6362802A (en) | 1988-03-19 |
Family
ID=16537215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20728286A Pending JPS6362802A (en) | 1986-09-03 | 1986-09-03 | Porous metallic sintered body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6362802A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0450897A2 (en) * | 1990-04-03 | 1991-10-09 | Ngk Insulators, Ltd. | Heat-resistant metal monolith and manufacturing method therefor |
| US5292485A (en) * | 1990-04-03 | 1994-03-08 | Ngk Insulators, Ltd. | Heat-resistant metal monolith |
| JPH07173507A (en) * | 1993-12-20 | 1995-07-11 | Ndc Co Ltd | Rein forming air-permeable mold and production thereof |
| US5445786A (en) * | 1990-04-03 | 1995-08-29 | Ngk Insulators, Ltd. | Heat-resistant metal monolith and manufacturing method therefor |
| KR100768805B1 (en) | 2005-02-14 | 2007-10-19 | 히타치 긴조쿠 가부시키가이샤 | Porous liquid absorbing-and-holding member, process for production thereof, and alcohol absorbing-and-holding member |
| WO2008062925A1 (en) * | 2006-11-21 | 2008-05-29 | Hak Sik Joo | Method for manufacturing open cell microporous metal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864107A (en) * | 1971-11-30 | 1973-09-05 | ||
| JPS4931843A (en) * | 1972-07-21 | 1974-03-22 | ||
| JPS5887206A (en) * | 1981-11-18 | 1983-05-25 | N D C Kk | Porous sintered metallic material and its production |
| JPS5964730A (en) * | 1982-10-01 | 1984-04-12 | Ngk Insulators Ltd | Porous sound-absorbing material and its manufacture |
-
1986
- 1986-09-03 JP JP20728286A patent/JPS6362802A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4864107A (en) * | 1971-11-30 | 1973-09-05 | ||
| JPS4931843A (en) * | 1972-07-21 | 1974-03-22 | ||
| JPS5887206A (en) * | 1981-11-18 | 1983-05-25 | N D C Kk | Porous sintered metallic material and its production |
| JPS5964730A (en) * | 1982-10-01 | 1984-04-12 | Ngk Insulators Ltd | Porous sound-absorbing material and its manufacture |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0450897A2 (en) * | 1990-04-03 | 1991-10-09 | Ngk Insulators, Ltd. | Heat-resistant metal monolith and manufacturing method therefor |
| US5292485A (en) * | 1990-04-03 | 1994-03-08 | Ngk Insulators, Ltd. | Heat-resistant metal monolith |
| AU653713B2 (en) * | 1990-04-03 | 1994-10-13 | Ngk Insulators, Ltd. | Heat-resistant metal monolith and manufacturing method therefor |
| US5445786A (en) * | 1990-04-03 | 1995-08-29 | Ngk Insulators, Ltd. | Heat-resistant metal monolith and manufacturing method therefor |
| JPH07173507A (en) * | 1993-12-20 | 1995-07-11 | Ndc Co Ltd | Rein forming air-permeable mold and production thereof |
| KR100768805B1 (en) | 2005-02-14 | 2007-10-19 | 히타치 긴조쿠 가부시키가이샤 | Porous liquid absorbing-and-holding member, process for production thereof, and alcohol absorbing-and-holding member |
| WO2008062925A1 (en) * | 2006-11-21 | 2008-05-29 | Hak Sik Joo | Method for manufacturing open cell microporous metal |
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