JPH0723527B2 - Carburizing method for Ti-6Al-4V alloy - Google Patents
Carburizing method for Ti-6Al-4V alloyInfo
- Publication number
- JPH0723527B2 JPH0723527B2 JP30376386A JP30376386A JPH0723527B2 JP H0723527 B2 JPH0723527 B2 JP H0723527B2 JP 30376386 A JP30376386 A JP 30376386A JP 30376386 A JP30376386 A JP 30376386A JP H0723527 B2 JPH0723527 B2 JP H0723527B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- carburizing
- alloy
- vacuum
- torr
- 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.)
- Expired - Lifetime
Links
- 238000005255 carburizing Methods 0.000 title claims description 40
- 229910045601 alloy Inorganic materials 0.000 title claims description 18
- 239000000956 alloy Substances 0.000 title claims description 18
- 229910000883 Ti6Al4V Inorganic materials 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 15
- 239000007789 gas Substances 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000003672 processing method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 17
- 239000010936 titanium Substances 0.000 description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000010791 quenching Methods 0.000 description 6
- 230000000171 quenching effect Effects 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000006356 dehydrogenation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、Ti−6Al−4V合金の浸炭処理法に関し、例え
ばTi−6Al−4V合金製一般部品（エンジンバルブ特車
等）の表面硬化のための真空浸炭焼入れ法等として適用
される上記浸炭処理法に関する。TECHNICAL FIELD The present invention relates to a method for carburizing Ti-6Al-4V alloy, for example, surface hardening of general parts made of Ti-6Al-4V alloy (engine valve special vehicle, etc.). The present invention relates to the above carburizing treatment method applied as a vacuum carburizing and quenching method.
チタン合金に対し、工業的に定つた浸炭処理法はなく、
強いて言えば鋼材の場合と同様にRXガス浸炭焼入れ又は
真空浸炭焼入れが一般的であろう。There is no industrially established carburizing method for titanium alloys,
In the strong sense, RX gas carburizing or vacuum carburizing will be the same as for steel.
上記従来法では浸炭工程に移る前の昇温過程でチタン酸
化膜が生じ、浸炭が著しく妨害され、浸炭深さは200μ
ｍ程度が限界である。浸炭鋼製部品で要求される上記の
５〜10倍の浸炭深さを得ることはTi−6Al−4V合金に関
しては従来の浸炭処理技術では殆んど不可能である。In the above conventional method, a titanium oxide film is formed in the temperature rising process before shifting to the carburizing process, which significantly interferes with carburizing and the carburizing depth is 200 μm.
The limit is about m. It is almost impossible for the Ti-6Al-4V alloy to obtain the carburizing depth of 5 to 10 times that required for carburized steel parts by the conventional carburizing technology.
そこで本発明では、Ti−6Al−4V合金に関し、上記限度
以上の浸炭深さを得ることのできる浸炭処理法を提案す
るものである。Therefore, the present invention proposes a carburizing method for a Ti-6Al-4V alloy that can obtain a carburizing depth exceeding the above limit.
本発明者らは、上記問題点を解決するために鋭意研究を
重ねた結果、チタンは一度酸化膜を生成すると、鉄の
場合と異なり、高温水素中にさらされても還元されない
から、浸炭雰囲気に入る前の昇温を従来の真空浸炭炉の
限界である10-2オーダトールよりも高い真空度により無
酸素状態として昇温中の酸化を防止し、（従来の10-2オ
ーダトール程度では酸化は避けられない）、またチタ
ンと炭素の二元系状態図では炭素の固容度は高温域にあ
るβ相よりも低温側のα相領域において大きい反面、拡
散は高温の方が容易であることから、温度でもα相が安
定に存在し得る組成にしておくことができれば炭素の固
容及び内部への拡散を促進することができ、この高温で
の安定なα相は２相安定化元素の一つである窒素を予め
表面部に添加しておくことにより発現し、更にチタン
はメタン等の浸炭性ガスの分解で生じた水素を吸収し、
室温で脆くなるので、浸炭工程後に再度高真空加熱を施
して脱水素化処理を行い、最後にに高温状態からアル
ゴンガス等の希ガス元素により急冷（すなわち焼入れ）
を行えばよいとの知見を得、本発明を開発するに至つ
た。As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that once an oxide film is formed in titanium, unlike in the case of iron, titanium is not reduced even when exposed to high-temperature hydrogen. oxidation during heating to prevent the oxygen-free state by high vacuum than 10 -2 order Torr which is the limit of the heating conventional vacuum carburizing furnace before entering (at about conventional 10-2 order Torr Oxidation is unavoidable), and in the binary phase diagram of titanium and carbon, the solid solubility of carbon is larger in the α phase region on the low temperature side than the β phase in the high temperature region, but diffusion is easier at high temperature. Therefore, if a composition that allows the α phase to exist stably even at temperature can be promoted, the solid content of carbon and diffusion into the inside can be promoted, and this stable α phase at high temperature is stabilized in two phases. To add nitrogen, one of the elements, to the surface in advance More expressed, further titanium absorbs hydrogen produced by decomposition of the carburizing gas such as methane,
Since it becomes brittle at room temperature, it is subjected to high vacuum heating again for dehydrogenation treatment after the carburizing process, and finally it is rapidly cooled (that is, quenched) from a high temperature state with a rare gas element such as argon gas.
The present invention has been developed, and the present invention has been developed.
すなわち本発明は、 (1) Ti−6Al−4V合金を２×10-4トール以上の高真空度
下で室温から1050℃前後まで昇温し、次いで当該温度を
維持しながら浸炭性ガス注入下で浸炭を行い、しかる後
再度上記高真空度を復帰して1100℃以上に昇温し、当該
温度に一定時間保持した後、希ガス元素を注入して冷却
することを特徴とするTi−6Al−4V合金の浸炭処理法 (2) Ti−6Al−4V合金を２×10-4トール以上の高真空度
下で室温から850℃前後まで昇温し、次いで窒素注入下
において当該温度から1050℃前後まで昇温し、当該温度
に到達した後再度上記真空度にし、当該温度を維持しな
がら浸炭性ガス注入下で浸炭を行い、しかる後もう一度
上記高真空度を復帰して1100℃以上に昇温し、当該温度
に一定時間保持した後、希ガス元素を注入して冷却する
ことを特徴とするTi−6Al−4V合金の浸炭処理法 に関するものである。That is, the present invention includes (1) heating Ti-6Al-4V alloy from room temperature to around 1050 ° C. under a high vacuum degree of 2 × 10 −4 Torr or more, and then introducing a carburizing gas while maintaining the temperature. Carburizing at 6 ° C., then returning to the high vacuum again to raise the temperature to 1100 ° C. or higher, holding the temperature for a certain period of time, and then injecting a rare gas element to cool the Ti-6Al. -4V alloy carburizing method (2) Ti-6Al-4V alloy is heated from room temperature to about 850 ° C under high vacuum of 2 × 10 -4 Torr or more, and then 1050 ° C from the temperature under nitrogen injection. After raising the temperature to the front and back and reaching the temperature, the vacuum degree is set again, and carburizing is performed under the injection of carburizing gas while maintaining the temperature, and then the high vacuum degree is restored again and the temperature is raised to 1100 ° C or higher. Ti-6Al, which is characterized by injecting a rare gas element and cooling it after heating and maintaining the temperature for a certain period of time. It relates to the carburizing treatment method of 4V alloy.
本発明において、真空度を２×10-4トール以上とするの
は、これ以下であると酸化チタン被膜が生成し、浸炭を
妨害するからである。In the present invention, the degree of vacuum is set to 2 × 10 −4 Torr or more because if it is less than this, a titanium oxide film is formed and carburization is hindered.
また、本発明において、1050℃前後まで先ず昇温するの
は、当該温度で浸炭が開始するからである。Further, in the present invention, the reason why the temperature is first raised to around 1050 ° C. is that carburization starts at that temperature.
本発明において、上記昇温途上の850℃前後から窒素注
入を行うのは、余り低温であると窒素注入の効果が得ら
れないからである。In the present invention, the reason why nitrogen is injected from around 850 ° C. during the temperature rise is that the effect of nitrogen injection cannot be obtained if the temperature is too low.
更に本発明において、メタン、エタン、プロパン等の浸
炭性ガス注入による浸炭処理後に、再度上記の高真空度
に復帰させ1100℃以上に昇温するのは、真空度や温度が
充分でないと前記した脱水素を充分に行うことができな
いからである。Further, in the present invention, after the carburizing treatment by injecting a carburizing gas such as methane, ethane, propane, it is said that the degree of vacuum and the temperature are not sufficient to return to the above high vacuum degree and raise the temperature to 1100 ° C. or higher. This is because dehydrogenation cannot be performed sufficiently.
本発明では、２×10-4トール以上の高真空度下で加熱
し、直接浸炭（Ti＋CH4,C2Ｈ6又はＣ3Ｈ8→Ti〔Ｃ〕＋2
H2）開始までの炉気すなわち浸炭温度到達までの昇温過
程で酸化チタン被膜の生成を防止し、当該被膜による浸
炭の妨害を避ける。In the present invention, it is heated under a high vacuum degree of 2 × 10 −4 Torr or more and directly carburized (Ti + CH 4 , C 2 H 6 or C 3 H 8 → Ti [C] +2.
H 2) at a Atsushi Nobori process up furnace gas i.e. carburization temperature reaches up to start to prevent the formation of titanium oxide film, avoiding disturbance of carburization by the coating.
また、本発明では、上記昇温過程の途上でα相安定元素
の一つである窒素を注入して初期窒化を行わせ、表面部
におけるα相の安定化を図ると共に、アルファ相温度域
を高温側に移行させ、浸炭し難いβ相での浸炭を回避す
る。Further, in the present invention, in the course of the temperature rising process, nitrogen, which is one of the α-phase stable elements, is injected to carry out initial nitriding to stabilize the α-phase in the surface portion, and the α-phase temperature range is controlled. Move to high temperature side to avoid carburizing in β phase, which is difficult to carburize.
更に本発明では２×10-4トール以上という高真空度で熱
処理するために、無酸素状態で長時間に亘り浸炭処理を
行うことができ、しかも高温化により拡散を速めること
ができる。Further, in the present invention, since the heat treatment is performed at a high degree of vacuum of 2 × 10 −4 Torr or more, the carburizing treatment can be performed for a long time in an oxygen-free state, and the diffusion can be accelerated by raising the temperature.
(1) 直径8.4mm、長さ160mmのTi−6Al−4V合金焼鈍材を
約２×10-4トール以上の真空度に保たれた真空炉で室温
から1050℃に加熱・昇温した後、メタンを注入Ti＋CH4
→Ti〔Ｃ〕＋2H2の水素還元雰囲気（200〜400トール）
で炭素を直接にチタンと16時間（Ｈ）反応させて浸炭処
理した。次いで、メタンの注入を止め、約２×10-4トー
ルまで真空度を上げ、1100℃まで昇温し、2H保持後、ア
ルゴンガスを注入し、アルゴンガス冷却により焼入れを
施した。以下、これを処理材Ａ（本発明例）と称する。(1) After annealed Ti-6Al-4V alloy with a diameter of 8.4 mm and a length of 160 mm was heated from room temperature to 1050 ° C in a vacuum furnace maintained at a vacuum degree of about 2 × 10 -4 Torr or higher, Inject methane Ti + CH 4
→ Ti [C] + 2H 2 hydrogen reducing atmosphere (200-400 Torr)
Then, carbon was directly reacted with titanium for 16 hours (H) for carburization. Then, the injection of methane was stopped, the degree of vacuum was raised to about 2 × 10 −4 Torr, the temperature was raised to 1100 ° C., and after holding for 2 hours, argon gas was injected and quenching was performed by cooling with argon gas. Hereinafter, this is referred to as a treated material A (invention example).
(2) 上記(1)と同じTi−6Al−4V合金焼鈍材を、上記(1)
と同じ真空炉で室温から850℃に加熱、昇温し、850℃か
ら1050℃までの約1Hの昇温中は窒素を注入し、1050℃に
到達後は再度２×10-4トールまで真空度を上げ、メタン
を注入しTi＋CH4→Ti〔Ｃ〕＋2H2の水素還元雰囲気（20
0〜400トール）で炭素を直接にチタンと16H反応させて
浸炭処理した。そのあとは上記(1)と同じ処理を施し
た。以下、これを処理材Ｂ（本発明例）と称する。(2) The same Ti-6Al-4V alloy annealed material as in (1) above is used as in (1) above.
In the same vacuum furnace as above, the temperature is raised from room temperature to 850 ° C, the temperature is raised, nitrogen is injected during the temperature rise of about 1H from 850 ° C to 1050 ° C, and after reaching 1050 ° C, the vacuum is reduced again to 2 × 10 -4 Torr. The hydrogen reduction atmosphere of Ti + CH 4 → Ti [C] + 2H 2 (20
The carbon was directly reacted with titanium for 16H at 0-400 torr) and carburized. After that, the same treatment as the above (1) was performed. Hereinafter, this is referred to as a treated material B (invention example).
(3) 上記(1)と同じTi−6Al−4V合金焼鈍材を、約２×1
0-2トールの真空度に保たれた真空浸炭炉で、室温から9
60℃に加熱、昇温した後、メタンを注入しTi＋CH4→Ti
〔Ｃ〕＋2H2の水素還元雰囲気（400〜600トール）で炭
素を直接にチタンと16H反応させて浸炭処理した。次い
で、メタンの注入を止め、再度約２×10-2トールまで真
空度を上げ、990℃まで昇温し、2H保持後、油中冷却を
施した。これは鋼の真空浸炭焼入れで適用されている一
般の真空浸炭焼入れ条件とほゞ同じ処理条件である。以
下、これを処理材Ｃ（比較例）と称する。(3) Approximately 2 x 1 of the same Ti-6Al-4V alloy annealed material as in (1) above
A vacuum carburizing furnace maintained at a vacuum of 0 -2 Torr, from room temperature to 9
After heating to 60 ° C and raising the temperature, methane is injected to Ti + CH 4 → Ti
Carbon was directly reacted with titanium for 16H in a hydrogen-reducing atmosphere (400 to 600 Torr) of [C] + 2H 2 for carburization. Then, the injection of methane was stopped, the degree of vacuum was raised again to about 2 × 10 -2 Torr, the temperature was raised to 990 ° C., and after holding for 2 hours, cooling in oil was performed. This is almost the same processing condition as the general vacuum carburizing and quenching condition applied in the vacuum carburizing and quenching of steel. Hereinafter, this is referred to as a treated material C (comparative example).
以上３種の真空浸炭処理材について、浸炭深さの比較を
行うため、断面のマイクロビツカース硬さを測定した。
第１図にその結果を示す。参考のために従来のRXガス浸
炭炉焼入れによる場合を合せて示す。To compare the carburizing depths of the above three types of vacuum carburized materials, the micro Vickers hardness of the cross section was measured.
The results are shown in FIG. For reference, the case of conventional RX gas carburizing furnace quenching is also shown.
第１図によると、Hv550の有効硬化深さは処理材Ｂが0.8
0mmで最も深く、処理材Ａでは0.6mm、処理材Ｃは0.29mm
を示し浅い。RXガス浸炭炉焼入れではさらに浅い。According to Fig. 1, the effective hardening depth of Hv550 is 0.8 for treated material B.
0mm is the deepest, treated material A is 0.6mm, treated material C is 0.29mm
Shows shallow. RX gas carburizing furnace Quenching is even shallower.
処理材Ａが処理材Ｃに比べて深いことについては、処理
初期の昇温過程での真空度が処理材Ｃでは２×10-4トー
ルであるのに対し処理材Ａでは２×10-4トールと高く、
材料表面の酸化膜生成がほぼ完全に阻止されることによ
り、浸炭が比較的容易に行われたものと考えられる。処
理材Ｂが処理材Ａに比べて深いのは、初期窒化によりβ
相に変態することなく、α相のまゝ高温側において安定
し、炭素の拡散が加速されるためと考えられる。About treatment material A deep than the processing material C is treated early vacuum in the Atsushi Nobori process is processing material C in 2 × 10 -4 Torr at a treatment material A in 2 × 10 -4 whereas Tall and high,
It is considered that carburization was relatively easy because the oxide film formation on the material surface was almost completely prevented. The processed material B is deeper than the processed material A because β is due to the initial nitriding.
This is considered to be because the α phase is stable on the high temperature side without being transformed into the phase and the diffusion of carbon is accelerated.
本発明によれば、浸炭開始温度までの昇温を高真空度下
で行うため、浸炭を著しく妨害する酸化チタン被膜の生
成を防止でき、浸炭を良好に行うことができる。According to the present invention, since the temperature up to the carburizing start temperature is raised under a high degree of vacuum, it is possible to prevent the formation of a titanium oxide film that significantly interferes with carburization, and it is possible to perform good carburization.
また、本発明において、上記の昇温途上で窒素ガス注入
を行うため、被処理材の表面部に高温でも安定してα相
を存在させることができ、これにより高温域で炭素固溶
度を上げることができると共に、高温であるために炭素
の内部拡散を促進することができる。Further, in the present invention, since nitrogen gas is injected during the temperature rise, the α phase can be stably present on the surface portion of the material to be treated even at high temperature, whereby the solid solubility of carbon in the high temperature region can be increased. The temperature can be increased and the high temperature can promote the internal diffusion of carbon.
これらの点より、本発明ではTi−6Al−4V合金の浸炭深
さに関し従来の限界以上に深くすることができる。From these points, in the present invention, the carburizing depth of Ti-6Al-4V alloy can be made deeper than the conventional limit.
第１図は本発明による浸炭深さを従来技術によるそれと
比較して示した図表である。FIG. 1 is a table showing the carburizing depth of the present invention in comparison with that of the prior art.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−291959（ＪＰ，Ａ) 特開 昭62−161947（ＪＰ，Ａ) 特公 昭61−2747（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-291959 (JP, A) JP-A-62-161947 (JP, A) JP-B-61-2747 (JP, B2)
Claims (2)
高真空度下で室温から1050℃前後まで昇温し、次いで当
該温度を維持しながら浸炭性ガス注入下で浸炭を行い、
しかる後再度上記高真空度を復帰して1100℃以上に昇温
し、当該温度に一定時間保持した後、希ガス元素を注入
して冷却することを特徴とするTi−6Al−4V合金の浸炭
処理法。1. A Ti-6Al-4V alloy is heated from room temperature to about 1050 ° C. under a high vacuum of 2 × 10 −4 Torr or more, and then carburized under carburizing gas injection while maintaining the temperature. Done,
Thereafter, the high vacuum degree is restored again, the temperature is raised to 1100 ° C. or higher, and the temperature is maintained for a certain period of time, and thereafter, a rare gas element is injected and cooled to carburize the Ti-6Al-4V alloy. Processing method.
高真空度下で室温から850℃前後まで昇温し、次いで窒
素注入下において当該温度から1050℃前後まで昇温し、
当該温度に到達した後再度上記真空度にし、当該温度を
維持しながら浸炭性ガス注入下で浸炭を行い、しかる後
もう一度上記高真空度を復帰して1100℃以上に昇温し、
当該温度に一定時間保持した後、希ガス元素を注入して
冷却することを特徴とするTi−6Al−4V合金の浸炭処理
法。2. A Ti-6Al-4V alloy is heated from room temperature to about 850 ° C. under a high vacuum of 2 × 10 −4 Torr or more, and then heated from the temperature to about 1050 ° C. under nitrogen injection. ,
After reaching the temperature again to the above-mentioned vacuum degree, carburizing under carburizing gas injection while maintaining the temperature, and then returning to the above-mentioned high vacuum degree again and raising the temperature to 1100 ° C or higher,
A method of carburizing a Ti-6Al-4V alloy, which comprises holding the temperature for a certain period of time and then injecting a rare gas element to cool the Ti-6Al-4V alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30376386A JPH0723527B2 (en) | 1986-12-22 | 1986-12-22 | Carburizing method for Ti-6Al-4V alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30376386A JPH0723527B2 (en) | 1986-12-22 | 1986-12-22 | Carburizing method for Ti-6Al-4V alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63157852A JPS63157852A (en) | 1988-06-30 |
| JPH0723527B2 true JPH0723527B2 (en) | 1995-03-15 |
Family
ID=17924980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30376386A Expired - Lifetime JPH0723527B2 (en) | 1986-12-22 | 1986-12-22 | Carburizing method for Ti-6Al-4V alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723527B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0655471B2 (en) * | 1988-04-19 | 1994-07-27 | 三菱化成株式会社 | Transparent plastic film with excellent gas barrier properties |
| US5891267A (en) * | 1997-01-16 | 1999-04-06 | General Electric Company | Thermal barrier coating system and method therefor |
| FR2763604B1 (en) * | 1997-05-23 | 1999-07-02 | Innovatique Sa | PROCESS FOR THE FORMATION, BY A THERMOCHEMICAL TREATMENT WITHOUT PLASMA, OF A SURFACE LAYER HAVING A HIGH HARDNESS |
| JP4641091B2 (en) * | 2000-09-11 | 2011-03-02 | 清隆 松浦 | Method of forming carbonitride layer on metal material surface and titanium-based metal material having carbonitride layer on surface |
| CN100510156C (en) | 2007-04-10 | 2009-07-08 | 中国矿业大学 | Medical titanium alloy hip joint bulb surface carburization process |
| CN116238790A (en) | 2023-03-22 | 2023-06-09 | 精密产品有限公司 | A structure and packaging box for locking and releasing thin objects |
-
1986
- 1986-12-22 JP JP30376386A patent/JPH0723527B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63157852A (en) | 1988-06-30 |
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