JPH06346168A - Ti or ti-fe injection-molded and sintered alloy and its production - Google Patents
Ti or ti-fe injection-molded and sintered alloy and its productionInfo
- Publication number
- JPH06346168A JPH06346168A JP5157959A JP15795993A JPH06346168A JP H06346168 A JPH06346168 A JP H06346168A JP 5157959 A JP5157959 A JP 5157959A JP 15795993 A JP15795993 A JP 15795993A JP H06346168 A JPH06346168 A JP H06346168A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- injection
- molded
- alloy
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｔｉ又はＴｉ−Ｆｅ系
射出成形焼結合金及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Ti or Ti-Fe based injection molded sintered alloy and a method for producing the same.
【０００２】[0002]
【従来の技術】射出成形焼結金属は、金属粉末と多量の
有機バインダーとの混練物を金型内に射出し成形して、
グリーン体とし、該グリーン体を脱バインダー処理後、
焼結して焼結金属製品とする。従来、Ｔｉ粉末又はＴｉ
粉末とＦｅ粉末又はＴｉ−Ｆｅ合金粉末を使用して射出
成形焼結法により焼結体を製造できるが、前記の有機バ
インダーの分解により生じた炭素により焼結体中に粗大
なＴｉ炭化物が生成し、特に破断伸び等の機械的性質が
著しく劣ったものとなるため実用に供されていなかっ
た。2. Description of the Related Art Injection-molded sintered metal is manufactured by injecting a kneaded product of metal powder and a large amount of an organic binder into a mold,
After forming a green body and debinding the green body,
Sinter to give a sintered metal product. Conventionally, Ti powder or Ti
Although a sintered body can be manufactured by an injection molding sintering method using powder and Fe powder or Ti-Fe alloy powder, coarse Ti carbide is generated in the sintered body due to carbon generated by decomposition of the organic binder. However, the mechanical properties such as elongation at break are remarkably inferior, so that they have not been put to practical use.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、破断伸び等
の機械的性質の優れたＴｉ又はＴｉ−Ｆｅ系射出成形焼
結合金及びその製造方法を提供することを課題とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a Ti or Ti-Fe based injection molded sintered alloy having excellent mechanical properties such as elongation at break and a method for producing the same.
【０００４】[0004]
【課題を解決するための手段】本発明はＷ、Ｍｏ、Ｎ
ｂ、Ｃｒ、Ｚｒ、Ｔａ、Ｖ、Ｃａの内から選ばれた１種
を全成分中に１〜６.５原子％含有するＴｉ又はＴｉ−
Ｆｅ系射出成形焼結合金、及びＷ、Ｍｏ、Ｎｂ、Ｃｒ、
Ｚｒ、Ｔａ、Ｖ、Ｃａの内から選ばれた１種を全金属成
分中に１〜６.５原子％含有せしめたＴｉ粉末又はＴｉ
粉末とＦｅ粉末又はＴｉ−Ｆｅ合金粉末と、有機バイン
ダーとの混練物を射出成形し、脱バインダー後焼結する
Ｔｉ又はＴｉ−Ｆｅ系射出成形焼結合金の製造方法を課
題解決の手段とする。The present invention is based on W, Mo, N
Ti or Ti-containing 1 to 6.5 atomic% in all components, one selected from b, Cr, Zr, Ta, V and Ca.
Fe-based injection molded sintered alloy, and W, Mo, Nb, Cr,
Ti powder or Ti containing 1 to 6.5 atom% of all metal components selected from Zr, Ta, V and Ca
A method for producing a Ti or Ti-Fe-based injection-molded sintered alloy, in which a kneaded material of powder, Fe powder or Ti-Fe alloy powder, and an organic binder is injection-molded, and after debinding, sintered is used as a means for solving the problem. .
【０００５】使用するＴｉ粉末は市販品を用いることが
できる。Ｔｉ−Ｆｅ系合金を形成する場合は、Ｔｉ粉末
と鉄粉を用いるか、Ｔｉ−Ｆｅ合金粉末を用いる。これ
ら粉末は平均粒度２０〜２００μｍのものが使用され
る。The Ti powder used may be a commercially available product. When forming a Ti-Fe type alloy, Ti powder and iron powder are used, or Ti-Fe alloy powder is used. These powders have an average particle size of 20 to 200 μm.
【０００６】Ｗ、Ｍｏ、Ｎｂ、Ｃｒ、Ｚｒ、Ｔａ、Ｖ、
Ｃａは単体の粉末を用いるか、Ｔｉと合金化したものを
用いる。単体の粉末の場合は種類により平均粒径数μｍ
から数十μｍのものを用いるが、細かい方がよい。W, Mo, Nb, Cr, Zr, Ta, V,
As Ca, a single powder is used or an alloy with Ti is used. In the case of a single powder, the average particle size is several μm depending on the type
To tens of μm, but finer ones are better.
【０００７】金属粉末射出成形に用いる有機バインダー
は、一般的に射出成形時に粉末に流動性を与える滑剤
と、グリーン体に形状保持性を与える結合剤とからな
る。滑剤としては、パラフィンワックス、カルナバワッ
クス、マイクロクリスタリンワックス、低分子量ポリエ
チレンワックス、変成ワックス、モンタン系エステルワ
ックス類が使用される。The organic binder used for metal powder injection molding generally comprises a lubricant that gives fluidity to the powder at the time of injection molding and a binder that gives shape retention to the green body. As the lubricant, paraffin wax, carnauba wax, microcrystalline wax, low molecular weight polyethylene wax, modified wax, montan ester wax are used.
【０００８】結合剤としては、アクリル樹脂、ポリエチ
レン、ポリプロピレン、エチレン−酢酸ビニル共重合
体、エチレン−アクリレート共重合体、ポリスチレン等
のポリマーが使用される。また必要に応じて、分散剤や
表面活性剤として、ステアリン酸、オレイン酸、ホウ酸
エステル等が添加されることもある。As the binder, polymers such as acrylic resin, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylate copolymer and polystyrene are used. If necessary, stearic acid, oleic acid, boric acid ester or the like may be added as a dispersant or a surface active agent.
【０００９】[0009]
【作用】これらの有機バインダーが加熱されると、全成
分が揮発分解せずに炭素となって残留する。有機バイン
ダーに由来する炭素は一般に２〜３重量％で、最も多く
ても６重量％以下と考えられる。本発明はこの残留炭素
とＴｉが反応して炭化物を形成するのを抑制するため
に、添加した、炭化物を形成し易い金属状態のＷ、Ｍ
ｏ、Ｎｂ、Ｃｒ、Ｚｒ、Ｔａ、Ｖ、Ｃａと反応させ、Ｔ
ｉ炭化物が生成するのを抑制して、Ｔｉ又はＴｉ−Ｆｅ
合金の特に破断伸び等の機械的性質が劣化しないように
したものである。When these organic binders are heated, all components remain as carbon without evaporating and decomposing. The carbon derived from the organic binder is generally 2-3% by weight, and is considered to be 6% by weight or less at most. In the present invention, in order to suppress the reaction between the residual carbon and Ti to form a carbide, W, M added in a metal state in which a carbide is easily formed is added.
T react with o, Nb, Cr, Zr, Ta, V, Ca
i or Carbide is suppressed to form Ti or Ti-Fe.
It is intended to prevent deterioration of mechanical properties such as elongation at break of the alloy.
【００１０】焼結体中に含まれる添加金属の割合を全体
中の１〜６.５原子％となるようにするのは、１原子％
未満或は６.５原子％を超えると、引っ張り強さや破断
伸びが小さくなり過ぎる。なお、原子％はガス成分は計
算に含めない通常の計算方法によった。The proportion of the added metal contained in the sintered body is 1 atom% to 1 atom% to 6.5 atom% of the whole.
If it is less than 6.5 atom% or more, the tensile strength and elongation at break become too small. In addition, the atomic% was calculated by the usual calculation method in which the gas component was not included in the calculation.
【００１１】[0011]
【実施例】粒度３２５メッシュアンダーの純Ｔｉ粉末、
平均粒径５μｍのカーボニル鉄粉末、平均粒径３μｍの
Ｗ粉末、平均粒径３μｍのＭｏ粉末、平均粒径２μｍの
Ｎｂ粉末、平均粒径３μｍのＶ粉末、粒径３２μｍ以下
のＣｒ粉末、粒径４４μｍ以下のＺｒ粉末、平均粒径３
μｍのＴａ粉末、平均粒径４４μｍのＣａ粉末を表１に
示す化学組成に配合した。Example: Pure Ti powder having a grain size of 325 mesh under,
Carbonyl iron powder having an average particle size of 5 μm, W powder having an average particle size of 3 μm, Mo powder having an average particle size of 3 μm, Nb powder having an average particle size of 2 μm, V powder having an average particle size of 3 μm, Cr powder having a particle size of 32 μm or less, particles Zr powder with a diameter of 44 μm or less, average particle size 3
μm Ta powder and Ca powder having an average particle size of 44 μm were mixed in the chemical composition shown in Table 1.
【００１２】前記の混合粉末８５０ｇに、アクリル樹脂
（三洋化成工業社製 商品名ＣＢ−１）と、融点１２０
゜Ｆのパラフインワックス（日本石油精製社製）とを等
重量混合した有機バインダー１５０ｇを混合した。この
混合物を射出温度９０℃で、射出圧力６００ｋｇｆ／ｃ
ｍ2の条件で射出成形してＪＩＳ ６号引っ張り試験片
（ＪＩＳ Ｚ ２２０１）形状のグリーン体とした。To 850 g of the above-mentioned mixed powder, an acrylic resin (manufactured by Sanyo Chemical Industry Co., Ltd., trade name CB-1) and a melting point of 120
150 g of an organic binder obtained by mixing equal weight of paraffin wax of ° F (manufactured by Nippon Oil Refinery Co., Ltd.) was mixed. This mixture is injected at a temperature of 90 ° C. and an injection pressure of 600 kgf / c.
Injection molding was performed under the condition of m 2 to obtain a JIS No. 6 tensile test piece (JIS Z 2201) shaped green body.
【００１３】このグリーン体を窒素気流中で３００℃ま
で加熱して脱バインダー処理を行った。その後、１０-5
Ｔｏｒｒの真空中で、加熱速度１０℃／分で昇温し、１
３００℃に１時間保持した後、炉冷し、焼結体を得た。
この焼結体を引っ張り試験機で引っ張り試験を行い、引
っ張り強さ、及び破断伸びを測定した。その結果を表１
に示す。This green body was heated to 300 ° C. in a nitrogen stream to remove the binder. Then 10 -5
In a vacuum of Torr, the temperature was raised at a heating rate of 10 ° C./minute to 1
After holding at 300 ° C. for 1 hour, furnace cooling was performed to obtain a sintered body.
This sintered body was subjected to a tensile test with a tensile tester to measure tensile strength and breaking elongation. The results are shown in Table 1.
Shown in.
【００１４】[0014]
【表１】 試験番号 焼結体の化学組成 引っ張り強さ 破断伸び 備考 原子％ ｋｇｆ／ｍｍ2 ％ １ 3.2Ｃ−0.5Ｍｏ−Ｔｉ ４３ ０ 比較例 ────────────────────────────────── ２ 3.2Ｃ−2.0Ｎｂ−Ｔｉ ７８ １４ ３ 3.2Ｃ−2.4Ｃａ−5Ｆｅ−Ｔｉ ７８ １４ ４ 3.5Ｃ−3.5Ｚｒ−5Ｆｅ−Ｔｉ ９７ １８ ５ 3.5Ｃ−3.6Ｖ−5Ｆｅ−Ｔｉ １０２ １９ 実施例 ６ 3.2Ｃ−3.3Ｍｏ−Ｔｉ ７５ １８ ７ 3.5Ｃ−4.0Ｃｒ−5Ｆｅ−Ｔｉ ９８ １９ ８ 3.3Ｃ−6.0Ｔａ−Ｔｉ ７８ １４ ９ 3.2Ｃ−6.3Ｗ−Ｔｉ ７６ １８ ────────────────────────────────── １０ 3.2Ｃ−7.0Ｃａ−Ｔｉ ７８ ０ 比較例[Table 1] Test number Chemical composition of sintered body Tensile strength Elongation at break Remark Atomic% kgf / mm 2 % 1 3.2C-0.5Mo-Ti 43 0 Comparative example ────────────── ───────────────────── 2 3.2C-2.0Nb-Ti 78 14 3 3.2C-2.4Ca-5Fe-Ti 78 14 4 3.5C-3.5Zr- 5Fe-Ti 97 18 5 3.5C-3.6V-5Fe-Ti 102 19 Example 6 3.2C-3.3Mo-Ti 75 18 7 3.5C-4.0Cr-5Fe-Ti 98 19 8 3.3C-6.0Ta-Ti 78 14 9 3.2C-6.3W-Ti 76 18 ────────────────────────────────── 10 3.2C-7.0 Ca-Ti 78 0 Comparative Example
【００１５】表１によれば、Ｔｉ又はＴｉ−Ｆｅ系射出
成形焼結合金において、Ｗ、Ｍｏ、Ｎｂ、Ｃｒ、Ｚｒ、
Ｔａ、Ｖ、Ｃａの内から選ばれた１種を、全成分中に１
〜６.５原子％含有せしめることにより、機械的性質の
優れた射出成形焼結合金を提供することが可能となる。According to Table 1, in Ti or Ti--Fe injection molded sintered alloys, W, Mo, Nb, Cr, Zr,
One of Ta, V and Ca selected from all ingredients
By including the content of ˜6.5 at%, it becomes possible to provide an injection-molded sintered alloy having excellent mechanical properties.
【００１６】[0016]
【発明の効果】本発明によれば、機械的性質、特に、破
断伸びに優れたＴｉ又はＴｉ−Ｆｅ系射出成形焼結合金
を提供できる。INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a Ti or Ti-Fe based injection-molded sintered alloy excellent in mechanical properties, particularly, elongation at break.
Claims (2)
Ｖ、Ｃａの内から選ばれた１種を全成分中に１〜６.５
原子％含有するＴｉ又はＴｉ−Ｆｅ系射出成形焼結合
金。1. W, Mo, Nb, Cr, Zr, Ta,
1 to 6.5 in all ingredients, one selected from V and Ca
A Ti or Ti-Fe based injection-molded sintered alloy containing atomic%.
Ｖ、Ｃａの内から選ばれた１種を全金属成分中に１〜
６.５原子％含有せしめたＴｉ粉末又はＴｉ粉末とＦｅ
粉末又はＴｉ−Ｆｅ合金粉末と、有機バインダーとの混
練物を射出成形し、脱バインダー後焼結するＴｉ又はＴ
ｉ−Ｆｅ系射出成形焼結合金の製造方法。2. W, Mo, Nb, Cr, Zr, Ta,
1 to 1 selected from V and Ca among all metal components
Ti powder or Ti powder and Fe containing 6.5 atomic%
Powder or Ti-Fe alloy powder and a kneaded product of an organic binder are injection-molded, and the binder or binder is sintered after debinding.
A method for producing an i-Fe-based injection molded sintered alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5157959A JPH06346168A (en) | 1993-06-03 | 1993-06-03 | Ti or ti-fe injection-molded and sintered alloy and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5157959A JPH06346168A (en) | 1993-06-03 | 1993-06-03 | Ti or ti-fe injection-molded and sintered alloy and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06346168A true JPH06346168A (en) | 1994-12-20 |
Family
ID=15661201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5157959A Pending JPH06346168A (en) | 1993-06-03 | 1993-06-03 | Ti or ti-fe injection-molded and sintered alloy and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06346168A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999005332A1 (en) * | 1997-07-25 | 1999-02-04 | Dynamet Technology, Inc. | Titanium materials containing tungsten |
| JP2005048235A (en) * | 2003-07-28 | 2005-02-24 | National Institute For Materials Science | beta TYPE TITANIUM ALLOY FOR LIVING BODY |
| CN108103354A (en) * | 2018-02-02 | 2018-06-01 | 贾红琴 | A kind of medical titanium alloy bone implant and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254733A (en) * | 1988-08-20 | 1990-02-23 | Kawasaki Steel Corp | Manufacture of ti sintered material |
| JPH0364402A (en) * | 1989-07-31 | 1991-03-19 | Komatsu Ltd | Method for controlling carbon content of metallic injection molding |
| JPH03281701A (en) * | 1989-09-18 | 1991-12-12 | Nkk Corp | Method for preparing mechanical strength in titanium powder and titanium alloy powder sintered body |
| JPH051342A (en) * | 1991-06-24 | 1993-01-08 | Sumitomo Heavy Ind Ltd | Production of titanium alloy and sintered titanium alloy |
-
1993
- 1993-06-03 JP JP5157959A patent/JPH06346168A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254733A (en) * | 1988-08-20 | 1990-02-23 | Kawasaki Steel Corp | Manufacture of ti sintered material |
| JPH0364402A (en) * | 1989-07-31 | 1991-03-19 | Komatsu Ltd | Method for controlling carbon content of metallic injection molding |
| JPH03281701A (en) * | 1989-09-18 | 1991-12-12 | Nkk Corp | Method for preparing mechanical strength in titanium powder and titanium alloy powder sintered body |
| JPH051342A (en) * | 1991-06-24 | 1993-01-08 | Sumitomo Heavy Ind Ltd | Production of titanium alloy and sintered titanium alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999005332A1 (en) * | 1997-07-25 | 1999-02-04 | Dynamet Technology, Inc. | Titanium materials containing tungsten |
| JP2005048235A (en) * | 2003-07-28 | 2005-02-24 | National Institute For Materials Science | beta TYPE TITANIUM ALLOY FOR LIVING BODY |
| CN108103354A (en) * | 2018-02-02 | 2018-06-01 | 贾红琴 | A kind of medical titanium alloy bone implant and preparation method thereof |
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