JP2017179388A - 焼結用粉末および焼結体 - Google Patents
焼結用粉末および焼結体 Download PDFInfo
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- JP2017179388A JP2017179388A JP2016063140A JP2016063140A JP2017179388A JP 2017179388 A JP2017179388 A JP 2017179388A JP 2016063140 A JP2016063140 A JP 2016063140A JP 2016063140 A JP2016063140 A JP 2016063140A JP 2017179388 A JP2017179388 A JP 2017179388A
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- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
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- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/008—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression characterised by the composition
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/218—Yttrium oxides or hydroxides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/02—Oxides
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- B22F2301/00—Metallic composition of the powder or its coating
- B22F2301/35—Iron
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- B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
- B22F2302/25—Oxide
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Abstract
【解決手段】金属粉末と、平均粒径が5nm以上、200nm以下の金属酸化物粒子と、が混合された焼結用粉末とする。また、そのような焼結用粉末の成形体が焼成されてなる焼結体とする。金属酸化物粒子は、Al2O3,MgO,ZrO2,Y2O3,CaO,SiO2,TiO2から選択される少なくとも1種の金属酸化物を主成分としてなるとよい。
【選択図】図2
Description
金属粉末は、単体金属よりなっても、合金よりなってもよい。焼結体において、高強度等の特性を発揮する観点から、金属粉末は、合金よりなることが好ましい、合金の種類は特に限定されないが、高強度を有し、かつ耐食性の高い焼結体を得る観点から、SUS304(L)、SUS434(L)、SUS316(L)、SUS410(L)、SUS329J1等のステンレス鋼を好適に用いることができる。ステンレス鋼以外の鉄基合金や、銅基合金よりなる金属粉末も、高強度を有する焼結体を得られる材料として、好適に用いることができる。
本焼結用粉末に快削成分として混合する金属酸化物粒子は、平均粒径が、5nm以上、200nm以下のナノ粒子よりなっている。
潤滑剤は、焼結用粉末に対してプレス成形を行う際に、成形性の向上、高密度化、金型潤滑性の確保等の役割を果たす。潤滑剤は、焼結時に気化してしまい、焼結体の中には実質的に残存しない。
本発明の一実施形態にかかる焼結体は、上記のような焼結用粉末を原料として得られる。
(焼結用粉末および焼結体の製造)
表1および表2に示す各成分を混合し、実施例1〜35および比較例1〜8にかかる焼結用粉末を調製した。比較例7を除いて、快削成分は、金属酸化物粒子よりなり、いずれも、表面処理を行っていない球状の粒子を用いた。
各焼結体について、ドリル試験により、切削性の評価を行った。評価には、JIS B 4313に則ったドリル装置を用いた。ドリルの刃を焼結体の面に垂直に配置し、以下の条件にて、27mmの距離にわたり、切削を行った。
・ドリル材質:SKH51(φ5mm)
・切削速度:V=30m/min
・送り速度:f=0.1mm/rev
・乾式条件にて切削
各焼結体について、破断の起こりにくさを評価するため、JIS Z 2241およびJIS Z 2559に従って、引張強度試験を行った。
各実施例および比較例にかかる焼結体について、JIS Z 2371に従って、中性塩水噴霧試験を実施した。48時間後に目視にて腐食の有無、腐食の程度を観察した。そして、快削成分を添加していない場合を基準として、腐食の程度を比較した。
焼結体における金属酸化物粒子の分散状態を確認するために、実施例17にかかる焼結体に対して、TEM観察を行った。
図2に、TEM観察像を示す。像において、符号Aおよび符号Bで示したように、濃いグレーで観察されている構造が、SiO2粒子に対応している。これらの構造がSiO2粒子に対応していることは、エネルギー分散型X線分光(EDS)において、担体由来のピークを除いては、SiとOのピークのみが観察されていることにより、確認した。
Wo コーナー逃げ面摩耗幅
R 切削方向
Claims (5)
- 金属粉末と、
平均粒径が5nm以上、200nm以下の金属酸化物粒子と、が混合されていることを特徴とする焼結用粉末。 - 前記金属酸化物粒子は、Al2O3,MgO,ZrO2,Y2O3,CaO,SiO2,TiO2から選択される少なくとも1種の金属酸化物を主成分としてなることを特徴とする請求項1に記載の焼結用粉末。
- 前記焼結用粉末における前記金属酸化物粒子の添加量は、0.03質量%以上、0.7質量%以下であることを特徴とする請求項1または2に記載の焼結用粉末。
- 前記金属酸化物粒子は、純度90質量%以上の単金属酸化物よりなることを特徴とする請求項1から3のいずれか1項に記載の焼結用粉末。
- 請求項1から4のいずれか1項に記載の焼結用粉末の成形体が焼成されてなることを特徴とする焼結体。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016063140A JP6766399B2 (ja) | 2016-03-28 | 2016-03-28 | 焼結用粉末および焼結体 |
US15/464,170 US20170274452A1 (en) | 2016-03-28 | 2017-03-20 | Powder for sintering and sintered body |
KR1020170036132A KR20170113183A (ko) | 2016-03-28 | 2017-03-22 | 소결용 분말 및 소결체 |
CN201710193042.5A CN107234235B (zh) | 2016-03-28 | 2017-03-28 | 烧结用粉末和烧结体 |
TW106110325A TWI623626B (zh) | 2016-03-28 | 2017-03-28 | 燒結用粉末及燒結體 |
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JP2016063140A JP6766399B2 (ja) | 2016-03-28 | 2016-03-28 | 焼結用粉末および焼結体 |
Publications (2)
Publication Number | Publication Date |
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JP2017179388A true JP2017179388A (ja) | 2017-10-05 |
JP6766399B2 JP6766399B2 (ja) | 2020-10-14 |
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Application Number | Title | Priority Date | Filing Date |
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JP2016063140A Active JP6766399B2 (ja) | 2016-03-28 | 2016-03-28 | 焼結用粉末および焼結体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170274452A1 (ja) |
JP (1) | JP6766399B2 (ja) |
KR (1) | KR20170113183A (ja) |
CN (1) | CN107234235B (ja) |
TW (1) | TWI623626B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112017005165T5 (de) | 2016-10-12 | 2019-07-11 | Denso Corporation | Feinstaubdetektionssensor und feinstaubdetektionsvorrichtung |
WO2019146310A1 (ja) * | 2018-01-25 | 2019-08-01 | 株式会社神戸製鋼所 | 粉末冶金用混合粉 |
JP2019127654A (ja) * | 2018-01-25 | 2019-08-01 | 株式会社神戸製鋼所 | 粉末冶金用混合粉 |
JP2020037735A (ja) * | 2018-08-31 | 2020-03-12 | 大同特殊鋼株式会社 | 合金粉末組成物 |
WO2021090918A1 (ja) * | 2019-11-08 | 2021-05-14 | 大同特殊鋼株式会社 | 粉末材料 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7024394B2 (ja) | 2017-12-26 | 2022-02-24 | 大同特殊鋼株式会社 | 金属粉末材料 |
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2016
- 2016-03-28 JP JP2016063140A patent/JP6766399B2/ja active Active
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2017
- 2017-03-20 US US15/464,170 patent/US20170274452A1/en not_active Abandoned
- 2017-03-22 KR KR1020170036132A patent/KR20170113183A/ko active Search and Examination
- 2017-03-28 TW TW106110325A patent/TWI623626B/zh active
- 2017-03-28 CN CN201710193042.5A patent/CN107234235B/zh active Active
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WO2021090918A1 (ja) * | 2019-11-08 | 2021-05-14 | 大同特殊鋼株式会社 | 粉末材料 |
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KR20170113183A (ko) | 2017-10-12 |
CN107234235B (zh) | 2020-09-22 |
TWI623626B (zh) | 2018-05-11 |
US20170274452A1 (en) | 2017-09-28 |
JP6766399B2 (ja) | 2020-10-14 |
CN107234235A (zh) | 2017-10-10 |
TW201739928A (zh) | 2017-11-16 |
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