JPH02263974A - Surface hardening treatment for titanium or titanium alloy - Google Patents
Surface hardening treatment for titanium or titanium alloyInfo
- Publication number
- JPH02263974A JPH02263974A JP8458589A JP8458589A JPH02263974A JP H02263974 A JPH02263974 A JP H02263974A JP 8458589 A JP8458589 A JP 8458589A JP 8458589 A JP8458589 A JP 8458589A JP H02263974 A JPH02263974 A JP H02263974A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- reaction accelerator
- treated
- carburizing treatment
- titanium alloy
- 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
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 37
- 239000010936 titanium Substances 0.000 title claims abstract description 31
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 30
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000005255 carburizing Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000007809 chemical reaction catalyst Substances 0.000 abstract description 3
- 239000011888 foil Substances 0.000 abstract description 2
- 238000007747 plating Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 238000007751 thermal spraying Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010953 base metal Substances 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 150000004679 hydroxides Chemical class 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005121 nitriding Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910019582 Cr V Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- XHFVDZNDZCNTLT-UHFFFAOYSA-H chromium(3+);tricarbonate Chemical compound [Cr+3].[Cr+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O XHFVDZNDZCNTLT-UHFFFAOYSA-H 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229940116318 copper carbonate Drugs 0.000 description 1
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910000008 nickel(II) carbonate Inorganic materials 0.000 description 1
- ZULUUIKRFGGGTL-UHFFFAOYSA-L nickel(ii) carbonate Chemical compound [Ni+2].[O-]C([O-])=O ZULUUIKRFGGGTL-UHFFFAOYSA-L 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
（産業上の利用分野）
この発明は２例えば、内燃機関のコネクティングロッド
、バルブ、ロッカーアーム、カム等の軽量でかつ十分な
機械的強度を有ししかも耐摩耗性に優れていることが要
求される部品の素材として適したものとするべくチタン
またはチタン合金の表面を硬化して耐摩耗性を向上させ
るのに利用されるチタンまたはチタン合金の表面硬化処
理方法に関するものである。
（従来の技術）
チタンおよびチタン合金は比重が小さζ軽量であると共
にある程度機械的特性にも優れさらには耐食性にも優れ
ているため、軽量であることが要望される自動車用エン
ジンや宇宙航空機器部品の素材として用いられあるいは
用いられようとしている。
この種のチタンおよびチタン合金において、その耐摩耗
性を向上させるために表面硬化処理を施すこともあり、
代表的な表面硬化処理法として、ガス窒化やガス酸化が
ある。
このガス窒化やガス酸化は、チタンまたはチタン合金か
らなる被処理材を窒素ガスや酸素ガス雰囲気中において
６００°Ｃないし８００℃以上の温度で数十時間加熱保
持することによりなされるものであって、被処理材の最
表面部分に形成された窒化物（Ｔ ｉ Ｎ）や酸化物（
Ｔ ｉ ０２ ）によってチタンまたはチタン合金の耐
摩耗性を改善しようとしたものである。
（発明が解決しようとする課題）
しかしながら、このようなチタンまたはチタン合金から
なる被処理材の表面をガス窒化やガス酸化する方法では
、被処理材の最表面に形成された窒化物（Ｔ ｉ Ｎ）
や酸化物（Ｔｉ０２）の厚さが２〜３ルｍ程度とかなり
薄いものであるため、摩滅したり＠離したすして消失し
やすいものとなっており、耐摩耗性が早期のうちに著し
く劣化したものになるというａ題を有していた。
（発明の目的）
この発明は、上述した従来の課題にかんがみてなされた
もので、チタンまたはチタン合金からなる被処理材の表
面に、より大きな表層硬さでかつより大きな硬化層深さ
を有していて摩滅や！Ｉｌ＃のおそれが著しく小ざい硬
化層を形成させることが可能であって、硬化層が容易に
摩滅したり２ｑ＃シたりして耐摩耗性が早期に劣化する
ことのないようにすることが可能であるチタンまたはチ
タン合金の表面硬化処理方法を提供することを目的とし
ている。(Industrial Application Field) This invention is applicable to 2. For example, connecting rods, valves, rocker arms, cams, etc. of internal combustion engines are required to be lightweight, have sufficient mechanical strength, and have excellent wear resistance. The present invention relates to a method for surface hardening titanium or titanium alloys, which is used to harden the surface of titanium or titanium alloys to improve their wear resistance so as to make them suitable as materials for parts. (Prior art) Titanium and titanium alloys have a low specific gravity, are lightweight, have excellent mechanical properties to some extent, and are also excellent in corrosion resistance, so they are used in automobile engines and aerospace equipment that require light weight. It is used or is about to be used as a material for parts. This type of titanium and titanium alloys are sometimes subjected to surface hardening treatment to improve their wear resistance.
Typical surface hardening treatment methods include gas nitriding and gas oxidation. Gas nitriding and gas oxidation are performed by heating and holding a material made of titanium or a titanium alloy at a temperature of 600°C to 800°C or higher for several tens of hours in a nitrogen gas or oxygen gas atmosphere. , nitride (T i N) and oxide (
This is an attempt to improve the wear resistance of titanium or a titanium alloy by using T i 02 ). (Problems to be Solved by the Invention) However, in the method of gas nitriding or gas oxidation of the surface of a material to be treated made of titanium or titanium alloy, nitrides (Ti N)
Since the thickness of Ti02 and oxide (Ti02) is quite thin, about 2 to 3 m, it is easy to wear away or disappear when separated, and the wear resistance deteriorates significantly in the early stages. It had the problem of becoming a deteriorated product. (Purpose of the Invention) The present invention was made in view of the above-mentioned conventional problems, and it is possible to create a hardened layer with greater surface hardness and greater hardened layer depth on the surface of a treated material made of titanium or titanium alloy. It wears out! It is possible to form a hardened layer with a significantly small risk of Il#, and it is possible to prevent the hardened layer from being easily worn away or becoming 2q#, resulting in early deterioration of wear resistance. The present invention aims to provide a surface hardening treatment method for titanium or titanium alloys that is possible.
（課題を解決するための手段）
この発明に係るチタンまたはチタン合金の表面硬化処理
方法は、チタンまたはチタン合金からなる被処理材の表
面に、浸炭処理の際の反応触媒として作用する反応促進
剤を設けたのち、浸炭処理を施すようにしたことを特徴
としており、このようなチタンまたはチタン合金の表面
硬化処理方法の構成を上述した従来の課題を解決するた
めの手段としている。
この発明に係るチタンまたはチタン合金の表面硬化処理
方法において適用きれるチタン合金は、α安定型元素で
あるＡ又やＳｎを比較的多く含有させたα型、α安定型
元素であるＡ文等とβ安定型元素であるＶ 、 Ｃｒ
、 Ｍ ｏ等とを適ｆ１１含有させたα＋β型、β安定
型元素であるＶ 、 Ｃｒ 、 Ｍ 。
等を比較的多く含有させたβ型があり１とくに限定はさ
れない。
また、このようなチタンまたはチタン合金からなる被処
理材の表面に設ける反応促進剤は、浸炭処理時に反応触
媒として作用するものであって、このような反応促進剤
としては、クロム、ニッケル、モリブデン、コバルト、
銅、亜鉛などが用いられ、また浸炭処理時に前記元素を
発生する化合物である炭酩塩、水酸化物、塩化物などが
用いられ、より具体的には炭酸クロム、炭酸ニッケル。
ＴＲｍコバルト、炭酸銅、１′！！化モリブデン等が用
いられる。
そして、このような反応促進剤をチタンまたはチタン合
金からなる被処理材の表面に設けるに際しては、反応促
進剤の粉末を水その他の溶剤等と共にペースト状とした
ものを塗布したり浸漬したりすることが可能である。ま
た、前記反応促進剤の箔体として設けたり、めっきや溶
射などによって薄層として設けたりすることも可能であ
る。
次いで、チタンまたはチタン合金からなる被処理材の表
面に十二記のごとく浸炭処理の反応促進剤を設けたのち
浸炭処理を施すに際しては、固体浸炭やガス浸炭などが
用いられる。
この浸炭処理によって、チタンまたはチタン合金からな
る被処理材の表層部分に炭素や酸素が拡散された硬化層
が形成される。この硬化層は、従来のガス窒化やガス酸
化による硬化層に比べてより大きな表層硬さを有してい
ると共により大きな硬化層深さを有していてｈａのしが
たいものとなっており、摩滅しがたいと共にたとえ摩滅
を生じたとしても基地が表われるまでに時間を要するた
め耐久性の優れたものとなっており、また、剥離しがた
い点からも耐久性の優れたものになっている。
（発明の作用）
この発明に係るチタンまたはチタン合金の表面硬化処理
方法では、チタンまたはチタン合金からなる被処理材の
表面に、）ｊＪｉＸ処理の反応促進剤を設けたのち、浸
炭処理を施すようにしているので、浸炭処理時において
荊記反応併進剤が触媒的な作用をはだすことによって、
浸炭処理後には被処理材の表層部分に炭素や酸素が十分
に拡散したより大きな硬さを有しかつまたより深い硬化
層深さを有する硬化層が形成されるようになり、摩滅や
剥離に強い硬化層が得られるという作用がもたらされる
。
（実施例）
実施例１〜６
第１表に示すα＋β型チタン合金（実施例１゜２．３）
、α型チタン合金（実施例４）、β型チタン合金（実施
例５）および純チタン（実施例６）からなる被処理材の
表面に１回じ〈第１表に示す反応促進剤を含むペースト
を２０〜３０ＩＬｍの厚さで塗布したのち乾燥し、次い
でグラファイト粉末中に埋めて同じく第１表に示す処理
条件で固体浸炭による浸炭処理を行った。
次いで、浸炭処理後における被処理材の表層硬さを調べ
たところ、同じく第１表に示す結果であった。また、硬
さＨｍｖ４５０以上が得られる硬化層深さは同じく第１
表に示すとおりであった。
止負ｆｉｔ二上
比較のために、反応促進剤を塗布することなく第１表に
示す条件で固体浸炭を行ったα＋β型チタン合金（比較
例１）、α型チタン合金（比較例４）およびβ型チタン
合金（比較例５）よりなる被処理材と、従来のガス窒化
を行ったα＋β型チタン合金よりなる被処理材（比較例
２）と、浸炭処理や窒化処理を行わないα＋β型チタン
合金（比較例３）および純チタン（比較例６）の未処理
材について、それぞれ表層硬さを調べると共に一部につ
いては硬化層深さを調べた。この結果を同じく第１表に
示す。
第１表に示すように、浸炭処理条件をそれぞれ同じにし
た実施例２，４．５と比較例１，４．５との比較から明
らかなごとく、被処理材の表面に反応促進剤を塗布した
のち浸炭処理を施すことによって、反応促進剤を塗布し
ない比較例の場合に比べて表層硬さをより硬いものにす
ることが可能であると共に硬化層深さもより大きなもの
にできることが認められた。
また、ガス窒化処理した従来の比較例２の被処理材に比
べて著しく短時間の処理によって表層硬さをかなり硬く
できると共に硬化層深さもより大きなものにできること
が認められた。
さらに、実施例６と比較例６との比較から明らかなごと
く純チタンに対しても著しく有効であることが認められ
た。(Means for Solving the Problems) The surface hardening treatment method for titanium or titanium alloy according to the present invention provides a reaction accelerator that acts as a reaction catalyst during carburizing treatment on the surface of a treated material made of titanium or titanium alloy. The present invention is characterized in that a carburizing treatment is performed after the titanium or titanium alloy has been provided with a surface hardening method. The titanium alloys that can be used in the surface hardening treatment method for titanium or titanium alloys according to the present invention include α type containing a relatively large amount of α-stable elements A or Sn, and A-type titanium alloys that are α-stable elements. β-stable elements V, Cr
V , Cr , M , which are α+β type and β stable elements containing a suitable amount of f11 such as , Mo, etc. There is a β-type containing relatively large amounts of 1, etc., and there is no particular limitation. In addition, the reaction accelerator provided on the surface of the treated material made of titanium or titanium alloy acts as a reaction catalyst during carburizing treatment, and such reaction accelerators include chromium, nickel, molybdenum, etc. ,cobalt,
Copper, zinc, etc. are used, and compounds that generate the above elements during carburization, such as carbonate, hydroxide, and chloride, are used, and more specifically, chromium carbonate and nickel carbonate. TRm cobalt, copper carbonate, 1'! ! Molybdenum oxide etc. are used. When providing such a reaction accelerator on the surface of a material to be treated made of titanium or titanium alloy, a paste of reaction accelerator powder and water or other solvent is applied or immersed. Is possible. Further, it is also possible to provide the reaction accelerator as a foil, or to provide it as a thin layer by plating, thermal spraying, or the like. Next, a reaction accelerator for carburizing treatment is provided on the surface of the material to be treated made of titanium or a titanium alloy as described in Section 12, and then solid carburizing, gas carburizing, or the like is used to perform the carburizing treatment. By this carburizing treatment, a hardened layer in which carbon and oxygen are diffused is formed on the surface layer of the material to be treated made of titanium or titanium alloy. This hardened layer has greater surface hardness and greater hardened layer depth than conventional hardened layers created by gas nitriding or gas oxidation, making it difficult to maintain ha. It is difficult to wear out, and even if it does wear out, it takes time for the base to appear, making it highly durable.It also has excellent durability because it is difficult to peel off. It has become. (Function of the invention) In the method for surface hardening treatment of titanium or titanium alloy according to the present invention, a reaction accelerator for )jJiX treatment is provided on the surface of the material to be treated made of titanium or titanium alloy, and then carburizing treatment is performed. During the carburizing process, the reaction accelerator exerts a catalytic action, resulting in
After carburizing, a hardened layer with greater hardness and deeper hardened layer depth in which carbon and oxygen have sufficiently diffused is formed on the surface of the treated material, making it less susceptible to wear and peeling. This brings about the effect that a strong hardened layer can be obtained. (Example) Examples 1 to 6 α+β type titanium alloy shown in Table 1 (Example 1゜2.3)
, one time on the surface of the treated material consisting of α-type titanium alloy (Example 4), β-type titanium alloy (Example 5) and pure titanium (Example 6) (containing the reaction accelerator shown in Table 1) The paste was applied to a thickness of 20 to 30 ILm, dried, then buried in graphite powder, and carburized by solid carburization under the treatment conditions shown in Table 1. Next, the surface hardness of the treated material after the carburizing treatment was examined, and the results were also shown in Table 1. In addition, the depth of the hardened layer that provides a hardness of Hmv450 or more is also the first
It was as shown in the table. For comparison, α+β type titanium alloy (Comparative Example 1), α type titanium alloy (Comparative Example 4) and A treated material made of β-type titanium alloy (Comparative Example 5), a treated material made of α+β-type titanium alloy subjected to conventional gas nitriding (Comparative Example 2), and α+β-type titanium without carburizing or nitriding. The surface hardness of the untreated alloy (Comparative Example 3) and pure titanium (Comparative Example 6) was investigated, and the depth of the hardened layer was also investigated for some of them. The results are also shown in Table 1. As shown in Table 1, as is clear from the comparison between Examples 2 and 4.5 and Comparative Examples 1 and 4.5, where the carburizing treatment conditions were the same, a reaction accelerator was applied to the surface of the material to be treated. By subsequently applying carburizing treatment, it was found that it was possible to make the surface layer harder and to increase the depth of the hardened layer compared to the comparative example in which no reaction accelerator was applied. . Furthermore, it was found that the surface hardness could be significantly increased and the depth of the hardened layer could be increased by a significantly shorter treatment time than in the conventional treated material of Comparative Example 2, which was subjected to gas nitriding treatment. Furthermore, as is clear from the comparison between Example 6 and Comparative Example 6, it was found to be extremely effective against pure titanium.
【発明の効果】
この発明に係るチタンまたはチタン合金の表面硬化処理
方法では、チタンまたはチタン合金からなる被処理材の
表面に、浸炭処理の反応促進剤を設けたのち、浸炭処理
を施すようにしたから、浸炭処理後のチタンまたはチタ
ン合金からなる被処理材の表面に、より大きな表層硬さ
でかつより大きな硬化層深さを有していて摩滅や剥離の
おそれが著しく小さい硬化層を形成させることが可能で
あって、硬化層が容易に摩滅したり剥離したりして耐摩
耗性が早期に劣化することのないようにすることが可能
であり、例えば自動車用内燃機関の構成部品であるバル
ブやロッカーアームなどの軽量化によるエンジン特性の
向上と同時に耐摩几性の改善による耐久性の向上をはか
ることができるようになるという著しく優れた効果がも
たらされる。[Effects of the Invention] In the method for surface hardening treatment of titanium or titanium alloy according to the present invention, a reaction accelerator for carburization treatment is provided on the surface of a material to be treated made of titanium or titanium alloy, and then carburization treatment is performed. Therefore, after carburizing, a hardened layer is formed on the surface of the treated material made of titanium or titanium alloy, which has a greater surface hardness and a greater hardened layer depth, with significantly less risk of wear and peeling. It is possible to prevent the hardened layer from easily abrading or peeling off, resulting in early deterioration of wear resistance. This has the remarkable effect of improving engine characteristics by reducing the weight of certain valves and rocker arms, and at the same time improving durability by improving wear resistance.
Claims (1)
に、浸炭処理の反応促進剤を設けたのち、浸炭処理を施
すことを特徴とするチタンまたはチタン合金の表面硬化
処理方法。（２）浸炭処理の反応促進剤が、クロム、ニ
ッケル、モリブデン、コバルト、銅、亜鉛および浸炭処
理時に前記元素を発生する化合物のうちから選ばれる特
許請求の範囲第（１）項に記載のチタンまたはチタン合
金の表面硬化処理方法。(1) A method for surface hardening treatment of titanium or titanium alloy, which comprises providing a reaction accelerator for carburization treatment on the surface of a material to be treated made of titanium or titanium alloy, and then performing carburization treatment. (2) Titanium according to claim (1), wherein the reaction accelerator for carburizing is selected from chromium, nickel, molybdenum, cobalt, copper, zinc, and a compound that generates the element during carburizing. Or surface hardening treatment method for titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8458589A JPH02263974A (en) | 1989-04-03 | 1989-04-03 | Surface hardening treatment for titanium or titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8458589A JPH02263974A (en) | 1989-04-03 | 1989-04-03 | Surface hardening treatment for titanium or titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02263974A true JPH02263974A (en) | 1990-10-26 |
Family
ID=13834751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8458589A Pending JPH02263974A (en) | 1989-04-03 | 1989-04-03 | Surface hardening treatment for titanium or titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02263974A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002080958A (en) * | 2000-09-11 | 2002-03-22 | Kiyotaka Matsuura | Method for forming carbonitride layer on surface of metallic material and titanium based metallic material provided with carbonitride layer on surface |
| JP2003073796A (en) * | 2001-09-03 | 2003-03-12 | Fuji Oozx Inc | Surface treatment method for titanium-based material |
-
1989
- 1989-04-03 JP JP8458589A patent/JPH02263974A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002080958A (en) * | 2000-09-11 | 2002-03-22 | Kiyotaka Matsuura | Method for forming carbonitride layer on surface of metallic material and titanium based metallic material provided with carbonitride layer on surface |
| 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 |
| JP2003073796A (en) * | 2001-09-03 | 2003-03-12 | Fuji Oozx Inc | Surface treatment method for titanium-based material |
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