JP6306393B2 - 機械部品 - Google Patents
機械部品 Download PDFInfo
- Publication number
- JP6306393B2 JP6306393B2 JP2014067807A JP2014067807A JP6306393B2 JP 6306393 B2 JP6306393 B2 JP 6306393B2 JP 2014067807 A JP2014067807 A JP 2014067807A JP 2014067807 A JP2014067807 A JP 2014067807A JP 6306393 B2 JP6306393 B2 JP 6306393B2
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- Japan
- Prior art keywords
- mass
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- corrosion resistance
- 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.)
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- 239000000956 alloy Substances 0.000 claims description 28
- 229910045601 alloy Inorganic materials 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 21
- 239000000654 additive Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007542 hardness measurement Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- -1 that is Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Knives (AREA)
- Powder Metallurgy (AREA)
Description
Cr:30質量%、Mo:5質量%、N:0.3質量%、Co:残部を含むCo−Cr−Mo基合金組成物に、炭素を2.5質量%添加した原料を真空溶解し、アルゴンガス中でガスアトマイズして、Co−Cr−Mo基合金粉末を作成した。これらの粉末の平均粒径は、アトマイズ条件と、メッシュ篩とを調整することで、1μmから200μmとした。
作成した試験試料(以下、「2.5%CCM合金」)を用いて、耐食性試験を行った。耐食性試験では、5%濃度のHCl溶液に試験試料を浸し、腐食電位の測定を行った。なお、比較試料として、炭素を0.3質量%以下で含む従来のCo−Cr−Mo基合金(以下、「従来CCM合金」)、64チタン合金(Ti−6Al−4V合金;以下、「Ti合金」)、オーステナイト系ステンレスSUS304の、3つの合金を用いて、同様の耐食性試験を行った。その試験結果を、図1および表1に示す。
電子顕微鏡を用いて、作成した試験試料の組織観察を行った。なお、比較のため、同じ原料、すなわち、Cr:30質量%、Mo:5質量%、N:0.3質量%、Co:残部を含むCo−Cr−Mo基合金組成物に、炭素を2.5質量%添加した原料を真空溶解し、その溶湯を金型に鋳込んで作成したインゴット(以下、「鋳造材」)についても、組織観察を行った。組織観察の結果を、図2に示す。
積層造形法による本発明の試験試料、および比較試料の鋳造材について、炭素を0.5質量%、1.0質量%、2.0質量%、3.0質量%、4.0質量%、5.0質量%添加したものを、それぞれ作成した。作成した各試験試料および各鋳造材について、ロックウェル硬度(HRC)の測定を行った。なお、各試験試料および各鋳造材は、一辺が10mmの立方体形状を成している。硬度測定の結果を、表2に示す。
Claims (2)
- C:0.5〜5.0質量%と、Cr:26〜35質量%と、Mo:5.0〜7.0質量%と、不可避不純物とを含み、残部がCoから成るCo−Cr−Mo基合金粉末を材料とし、積層造形法を利用して、10μm以下のCrの炭化物が均一に分散されたCo−Cr−Mo基合金で形成されていることを特徴とする機械部品。
- 刃物から成ることを特徴とする請求項1記載の機械部品。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014067807A JP6306393B2 (ja) | 2014-03-28 | 2014-03-28 | 機械部品 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014067807A JP6306393B2 (ja) | 2014-03-28 | 2014-03-28 | 機械部品 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015190004A JP2015190004A (ja) | 2015-11-02 |
JP6306393B2 true JP6306393B2 (ja) | 2018-04-04 |
Family
ID=54424775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014067807A Active JP6306393B2 (ja) | 2014-03-28 | 2014-03-28 | 機械部品 |
Country Status (1)
Country | Link |
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JP (1) | JP6306393B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6875682B2 (ja) * | 2017-07-03 | 2021-05-26 | 国立大学法人東北大学 | 機械部品 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61243143A (ja) * | 1984-11-06 | 1986-10-29 | Agency Of Ind Science & Technol | Co基超塑性合金およびその製造方法 |
JPS61179838A (ja) * | 1985-01-07 | 1986-08-12 | Mitsubishi Metal Corp | 加熱ガラス切断用Co基合金製シヤ−ブレ−ド |
JPS6223951A (ja) * | 1985-07-25 | 1987-01-31 | Mitsubishi Metal Corp | 耐摩耗性のすぐれたCo基合金 |
JP5303718B2 (ja) * | 2006-06-22 | 2013-10-02 | 国立大学法人岩手大学 | 多孔質Co基合金焼結被覆材およびその製造方法 |
US20140271317A1 (en) * | 2011-10-21 | 2014-09-18 | Kyocera Medical Corporation | BIOCOMPATIBLE Co-Cr-Mo ALLOY |
JP6198062B2 (ja) * | 2014-02-18 | 2017-09-20 | 国立大学法人東北大学 | Co基合金粉末 |
-
2014
- 2014-03-28 JP JP2014067807A patent/JP6306393B2/ja active Active
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JP2015190004A (ja) | 2015-11-02 |
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