JPH0659706B2 - Reactor fuel control rod - Google Patents
Reactor fuel control rodInfo
- Publication number
- JPH0659706B2 JPH0659706B2 JP61020117A JP2011786A JPH0659706B2 JP H0659706 B2 JPH0659706 B2 JP H0659706B2 JP 61020117 A JP61020117 A JP 61020117A JP 2011786 A JP2011786 A JP 2011786A JP H0659706 B2 JPH0659706 B2 JP H0659706B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- control rod
- fuel control
- reactor fuel
- pin
- 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
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Sliding-Contact Bearings (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、原子炉の炉心制御棒に使用される優れた耐食
性および耐摩耗性を有する燃料制御棒用ピンとローラを
備える原子炉燃料制御棒に関するものである。Description: TECHNICAL FIELD The present invention relates to a reactor fuel control rod provided with a fuel control rod pin and a roller having excellent corrosion resistance and wear resistance used for a core control rod of a nuclear reactor. It is about.
原子炉燃料制御棒は第１図に示す如く、上端部にハンド
ル１を有し該ハンドルは十字状ブレード４に接続されて
いる。該十字状ブレード内には中性子吸収ロッド３が収
納され、前記ブレードを適時上下動することにより、原
子炉燃料の燃焼状態を適切に保つようになっている。こ
の上下動が滑らかに行われるように、前記十字状ブレー
ド端部にはガイドローラ２が装備されている。該ガイド
ローラは、中心孔を有するローラと該ローラの回転軸と
なるピンからなる。従来の燃料制御棒は、ガイドローラ
２にコバルト（Ｃｏ）基超合金で製作されたローラと、
同じくＣｏ基の鍛造材から製作されたピンが装備されて
いる。これらは、第２図に示す如く、ローラ５およびピ
ン６のように構成されている一例として特許第1273886
号公報に示す材料が知られている。As shown in FIG. 1, the reactor fuel control rod has a handle 1 at its upper end, which is connected to a cross-shaped blade 4. The neutron absorbing rod 3 is housed in the cross-shaped blade, and the blade is moved up and down at appropriate times to keep the combustion state of the reactor fuel appropriate. A guide roller 2 is provided at the end of the cross-shaped blade so that the vertical movement is smoothly performed. The guide roller is composed of a roller having a center hole and a pin serving as a rotation shaft of the roller. A conventional fuel control rod includes a guide roller 2 and a roller made of a cobalt (Co) -based superalloy.
Also equipped with pins made from Co-based forgings. As shown in FIG. 2, these are configured as a roller 5 and a pin 6, for example, as disclosed in Japanese Patent No. 1273886.
The materials shown in the publication are known.
このローラに使用されているＣｏ基合金は高い炭素（Ｃ
１．０％）と高いクロム（Ｃｒ２８％）を含んでいる。
そのため炭化物が多く、従つて硬さが高く、また高いク
ロム含量ゆえに高温高圧の純水に対する腐食にも優れ、
ローラ材として優れた特性を有している。一方、ピン材
に使用されているＣｏ基鍛造合金は鍛造性、加工性、溶
接性が要求されるので、Ｃが０．１％と低く、またＣｒ
も２０％と低くしているが、やはり優れた耐摩耗性、耐
食性を有する。しかし、これらの合金はローラ材で約６
５％Ｃｏを、またピン材で約５０％のＣｏを含むため、
使用中に両者の摩耗により、摩耗粉を生じ、それが放射
化されて系内を循環し、また高温高圧の純水による腐食
により溶出したＣｏがやはり放射能により汚染されて循
環されるという問題を生ずる。The Co-based alloy used in this roller is high carbon (C
1.0%) and high chromium (28% Cr).
Therefore, it contains a large amount of carbide and therefore has a high hardness, and because of its high chromium content, it is also excellent in corrosion against pure water at high temperature and pressure,
It has excellent characteristics as a roller material. On the other hand, the Co-based forged alloy used for the pin material is required to have forgeability, workability, and weldability, so C content is as low as 0.1%, and Cr content is low.
Although it is as low as 20%, it also has excellent wear resistance and corrosion resistance. However, these alloys are about 6
5% Co and about 50% Co in the pin material,
Abrasion powder is generated due to wear of both during use, and it is activated and circulates in the system, and Co eluted by corrosion by pure water at high temperature and high pressure is also polluted by radioactivity and circulated. Cause
本発明の目的は、耐摩耗性および耐食性が良好で、かつ
Ｃｏの誘導放射能による問題を生じないガイドローラー
を有する燃料制御棒を提供することにある。An object of the present invention is to provide a fuel control rod having a guide roller which has good wear resistance and corrosion resistance and which does not cause a problem due to the induced activity of Co.
上記目的を達成するためには、ガイドローラのローラ材
とピン材の材料は、Ｃｏを含まず、しかも耐摩耗性に優
れ、かつ高温高圧の純水に対する耐食性に優れているこ
と、さらにピン材は鍛造可能であること、および溶接で
付けるので溶接性にも優れていることが要求される。In order to achieve the above-mentioned object, the material of the roller material of the guide roller and the material of the pin material do not contain Co, have excellent wear resistance, and have excellent corrosion resistance to high temperature and high pressure pure water. Is required to be forgeable and excellent in weldability because it is attached by welding.
耐摩耗性を得るには合金が一定の硬さを有することが要
求される。合金の硬さは、（イ）の析出物による析出硬
化、（ロ）基地の固溶硬化（ハ）表面硬化等によつて得
られる。（イ）においては、炭化物によるものが代表的
であり、（ロ）において、Ｍｏ，Ｗ，Ａｌ，Ｖ，Ｓｎ等
の固溶強化型元素を含有させる。（ハ）においては、酸
化・窒化による表面硬化などによつて得られる。また、
高温高圧水に対する腐食性の点からは、Ｃｒ量およびＮ
ｉ量、さらにはＭｏ量、Ｃ量が最も重要であり、またＴ
ｉの量も重要となる。以上の点から、Ｃｏを含まない適
当な合金を選ぶ必要がある。To obtain wear resistance, the alloy is required to have a certain hardness. The hardness of the alloy can be obtained by precipitation hardening due to the precipitate of (a), solid solution hardening of (b) base (c) surface hardening, and the like. In (a), a carbide is typical, and in (b), solid solution strengthening elements such as Mo, W, Al, V, and Sn are contained. In (c), it can be obtained by surface hardening by oxidation / nitridation. Also,
From the point of corrosiveness against high temperature and high pressure water, the Cr content and N
i amount, Mo amount and C amount are the most important, and T amount
The amount of i is also important. From the above points, it is necessary to select an appropriate alloy containing no Co.
本発明者らは、上記のような観点から、（１）ニツケル
（Ｎｉ）基でチタン（Ｔｉ）とアルミニウム（Ａｌ）を
多く含み、かつＣｒ量の多い、いわゆるγ′析出型合金
（Ｎｉ３（Ａｌ，Ｔｉ）を析出させた合金）、（２）Ｎ
ｉ基で炭化物の晶出または析出による硬化型合金でＣが
高く、かつＣｒがさらに高いもの、（３）Ｆｅ基合金に
ＴｉとＡｌを含有させ、かつＣｒを充分高く含有させた
合金、（４）Ｔｉ基合金にＡｌ，Ｖ，Ｓｎを含有させた
合金、（５）Ｔｉ合金を酸化雰囲気、例えば大気中で熱
処理し、酸化して表面硬化させたものを選び、ローラ材
として５種の合金、ピン材として３種の合金を組合せた
場合について、それぞれ純粋中で摺動摩耗試験を行なつ
た。その結果、ピンおよびローラ材としてＴｉ基合金を
ピン材としローラ材としてＴｉ基合金を酸化雰囲気中で
表面硬化させたものの組合せが最も優れていることを見
出した。From the above viewpoints, the inventors of the present invention have (1) a so-called γ ′ precipitation type alloy (Ni 3 ) which contains a large amount of titanium (Ti) and aluminum (Al) in a nickel (Ni) base and has a large amount of Cr. (Alloy deposited with Al, Ti)), (2) N
A hardenable alloy having a high C content and a high Cr content due to crystallization or precipitation of i-based carbides, (3) an alloy containing Ti and Al in a Fe-based alloy, and a sufficiently high Cr content ( 4) Ti-based alloy containing Al, V, Sn, and (5) Ti alloy is heat-treated in an oxidizing atmosphere, for example, in the air, and is oxidized to surface-harden. The sliding wear test was carried out in pure water for each of the alloys and the combination of three kinds of pin materials. As a result, it has been found that a combination of a pin and a roller material made of a Ti-based alloy and a roller material made of a Ti-based alloy surface-hardened in an oxidizing atmosphere is the best combination.
本発明は、Ｔｉ基合金からなるピン材と酸化雰囲気中で
の熱処理により表面硬化させたＴｉ基合金からなるロー
ラ材からなるガイドローラを有することを特徴とする原
子炉燃料制御棒にある。The present invention resides in a reactor fuel control rod characterized by having a pin material made of a Ti-based alloy and a guide roller made of a roller material made of a Ti-based alloy surface-hardened by heat treatment in an oxidizing atmosphere.
これらの材料のヴィッカース硬さは、いずれも８００以
下が好ましい。The Vickers hardness of these materials is preferably 800 or less.
すなわち、本発明は、Ｃ０．１％以下，Ａｌ１．０〜
７．０％、さらにＶ，Ｓｎの一種または二種を（Ｖにつ
いては２．０〜６．０％、Ｓｎについては１．０〜４．
０％）含み、残部ＴｉからなるＴｉ基合金をガイドロー
ラのピン材とすることを特徴とするものである。更に、
前記ガイドローラのローラ材は重量でＣ０．１％以下，
Ａｌ１．０〜７．０％、Ｓｎ１．０〜６．０％を含み、
残部Ｔｉからなる合金に酸化雰囲気、例えば大気中での
熱処理によつて酸化させ表面硬化したことを特徴とする
ものである。前記熱処理の温度は４００℃〜８００℃の
範囲であることが望ましい。なお、前記（１）のＮｉ基
のγ′型、あるいは（２）の炭化物析出型、さらには
（３）のＦｅ基のγ′型は、硬さは充分で耐食性にも優
れていたが、耐摩耗性は劣つていた。That is, the present invention is C0.1% or less, Al1.0 ~
7.0%, and one or two kinds of V and Sn (2.0 to 6.0% for V and 1.0 to 4.% for Sn).
It is characterized in that a Ti-based alloy containing 0%) and the balance Ti is used as the pin material of the guide roller. Furthermore,
The roller material of the guide roller is C0.1% or less by weight,
Including Al 1.0-7.0%, Sn 1.0-6.0%,
It is characterized in that an alloy consisting of the balance Ti is oxidized and surface-hardened by a heat treatment in an oxidizing atmosphere, for example, air. The temperature of the heat treatment is preferably in the range of 400 ° C to 800 ° C. The Ni-based γ'type of (1) or the carbide-precipitated type of (2) and the Fe-based γ'type of (3) had sufficient hardness and excellent corrosion resistance, The wear resistance was poor.
ローラ部材を酸化雰囲気中で熱処理するのは表面に酸化
させた表面硬化膜を形成するためである。ピン材は、表
面硬化膜を生じさせるような熱処理を行うと、鍛造、溶
接に際し支障をきたす恐れがあるため、前記熱処理を行
わないことが望ましい。また、前記熱処理温度は４００
〜８００℃が望ましい。熱処理が４００℃より低い温度
では、表面硬化が十分でなく、８００℃より高いと酸化
が進み過ぎる。The heat treatment of the roller member in an oxidizing atmosphere is to form an oxidized surface-hardened film on the surface. If the pin material is subjected to a heat treatment for forming a surface-hardened film, it may cause problems during forging and welding. Therefore, it is desirable not to perform the heat treatment. The heat treatment temperature is 400
~ 800 ° C is desirable. If the heat treatment temperature is lower than 400 ° C, the surface hardening is not sufficient, and if it is higher than 800 ° C, the oxidation proceeds too much.
上記ガイドローラのピン材およびローラ材のＣが０．１
５％より以上では靱性が低下するので好ましくない。よ
り好ましくは０．０５〜０．１％である。Ａｌが７．０
％より以上では、強度は向上するが、それ以上添加する
ことはＴｉ3Ａｌ（α2相）が析出し、靱性や応力腐食が
低下する。また１．０％より以下では強度が低下および
水素脆性が生じ好ましくない。３．５〜５．５％が好ま
しい。またＶおよびＳｎはβ組織を出し強度を高める
が、６％より以上ではω相を生じ、硬く、脆くなるので
好ましくない。Ｖは２％及びＳｎは１％より以下では強
度が低下する。Ｖは３〜５％及びＳｎは１．５〜３．５
％が好ましい。C of the pin material and roller material of the guide roller is 0.1
If it exceeds 5%, the toughness decreases, which is not preferable. It is more preferably 0.05 to 0.1%. Al is 7.0
If it is more than 0.1%, the strength is improved, but if it is added more than that, Ti 3 Al (α 2 phase) is precipitated, and the toughness and stress corrosion are reduced. Further, if it is less than 1.0%, strength is lowered and hydrogen embrittlement occurs, which is not preferable. 3.5-5.5% is preferable. Further, V and Sn give rise to a β structure and increase the strength, but if it is more than 6%, an ω phase is generated, and it becomes hard and brittle, which is not preferable. If V is less than 2% and Sn is less than 1%, the strength decreases. V is 3 to 5% and Sn is 1.5 to 3.5.
% Is preferred.
以下、本発明を実施例および比較例によりさらに詳細に
説明する。Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.
第１表に摺動摩耗試験に供した材料の化学成分を示す。
第２表には材料に施した熱処理と硬さを示す。ローラ材
としてNo.１〜４および４′の５種、ピン材としてNo.５
〜７の３種について試験した。ローラ材は摺動側に、ピ
ン材は固定側に置いて、純水中で摺動摩耗試験を行なつ
た。試験条件は室温で、摺動サイクル２８回／min 、摺
動距離６０mm／回、面圧２５kg／cm2で、５００回，２
０００回，５０００回後にそれぞれの摩耗量を測定し
た。Table 1 shows the chemical components of the materials used in the sliding wear test.
Table 2 shows the heat treatment and hardness applied to the material. No.1 to 4 and 4'for roller material, No.5 for pin material
-7 were tested. The roller material was placed on the sliding side and the pin material was placed on the fixed side, and a sliding wear test was performed in pure water. The test conditions are room temperature, sliding cycle 28 times / min, sliding distance 60 mm / time, surface pressure 25 kg / cm 2 , 500 times, 2
The amount of wear was measured after 000 times and 5000 times.
第３図〜第５図に試験結果を示す。第３図においてロー
ラ材No.１とピン材No.７との組合せの結果を示す。No.
１は、第１表に示すように、Ｎｉをベースとし、Ｔｉ＋
Ａｌを７．５％と多くしたγ′析出硬化型合金で、硬さ
は５００Ｈｖである。No.７はＴｉ基合金でＡｌ＋Ｖが
９．５％で硬さは３８０Ｈｖと低い。この組合せでは、
No.１（ローラ材）の摩耗量は比較的少ないが、No.７の
固定側（ピン材）の摩耗量が大きい。No.２はＮｉ基で
ＣとＣｒを多くした炭化物による硬化合金であるが、N
o.７との組合せの結果ではNo.１の場合と変りない。な
お、No.７の摩耗はわずかに大きいが、No.１の場合と変
わらない。The test results are shown in FIGS. FIG. 3 shows the results of the combination of roller material No. 1 and pin material No. 7. No.
1 is, as shown in Table 1, based on Ni, Ti +
It is a γ'precipitation hardening type alloy containing a large amount of Al of 7.5% and has a hardness of 500 Hv. No. 7 is a Ti-based alloy, Al + V is 9.5%, and its hardness is as low as 380 Hv. In this combination,
The wear amount of No. 1 (roller material) is relatively small, but the wear amount of the fixed side (pin material) of No. 7 is large. No. 2 is a hardened alloy made of carbide containing C and Cr in the Ni base, but N
The result of combination with o.7 is no different from the case of No.1. The wear of No. 7 is slightly large, but it is the same as that of No. 1.
次に、第４図にNo.３のローラ材とNo.７のピン材の組合
せの結果を示す。No.３の合金はＦｅ基でＴｉ＋Ａｌを
２．２％と少なくγ′析出硬化型合金である。この合金
の硬さは３４０Ｈｖと低い値を示したが合金の組合せに
よつて摩耗量は非常に多くなることがわかる。次に、N
o.４とNo.７との組合せについて検討すると、No.４の合
金はNo.７と同じＴｉ基合金で、結晶構造は稠密六方晶
で、耐食性にも優れている。硬さは３００Ｈｖと低い値
を示す。このNo.４とNo.７の組合わせでは、No.７をピ
ン材（固定側部材）とした場合に最も少ない摩耗量を示
し、耐食性にも優れている。従つて、ピン材にNo.７
を、ローラ材にNo.４を使用した場合に最も優れた耐摩
耗性と耐食性を示すことが発明した。さらにNo.４を大
気中で熱処理（４００〜８００℃）すると合金の表面硬
さは６８０Ｈｖと高くなる。このものを第２表及び第３
表中にNo.４′として示した。Next, FIG. 4 shows the results of the combination of No. 3 roller material and No. 7 pin material. The No. 3 alloy is a γ'precipitation hardening type alloy containing Fe and Ti + Al as small as 2.2%. The hardness of this alloy showed a low value of 340 Hv, but it can be seen that the amount of wear becomes extremely large depending on the combination of the alloys. Then N
Examining the combination of o.4 and No.7, the No.4 alloy is the same Ti-based alloy as No.7, the crystal structure is a dense hexagonal crystal, and the corrosion resistance is also excellent. The hardness shows a low value of 300 Hv. This combination of No. 4 and No. 7 shows the smallest amount of wear when No. 7 is used as the pin material (fixed member), and has excellent corrosion resistance. Therefore, the No. 7 pin material
It was invented that, when No. 4 was used as the roller material, the best wear resistance and corrosion resistance were exhibited. Furthermore, when No. 4 is heat-treated in the air (400 to 800 ° C.), the surface hardness of the alloy increases to 680 Hv. This is shown in Tables 2 and 3
It is shown as No. 4'in the table.
従つてピン材にNo.７をローラ材にNo.４′を使用した場
合に最も優れた耐摩耗性を示すことがさらに判明した。Therefore, it was further found that when No. 7 was used for the pin material and No. 4'for the roller material, the best wear resistance was exhibited.
次に比較のためにローラ材として最も優れている。No.
４の合金を用い、これとピン材としてNo.５，No.６との
組合せについて試験した。No.５は鍛造可能なＮｉ基合
金でＴｉ＋Ａｌが多いγ′析出硬化型合金である。Ｃｒ
量は１９％含まれており、耐食性にも優れている。この
No.５は、さらに３５％の加工度を加え、加工硬化をさ
せたもので、硬さは４４０Ｈｖである。結果を第５図に
示すが、摩耗量は第４図のNo.４とNo.７との組合わせに
比較して多く、適当でないことがわかる。次にNo.６とN
o.４についてみると、No.６の成分は、No.５とほとんど
同じであるが、加工度を与えていない。硬さは４９０Ｈ
ｖである。Ｗ，Ｆｅ元素を添加しているためNo.５より
少い硬いが、また摩耗量も多い。以上の比較によつて
も、第４図で示したNo.４とNo.７及びNo.４′とNo.７の
組合せ、特にNo.４′とNo.７の組合せが最も優れている
ことが判る。Next, it is the best roller material for comparison. No.
The alloy of No. 4 was used, and the combination of this with No. 5 and No. 6 as the pin material was tested. No. 5 is a forgeable Ni-based alloy, which is a γ'precipitation hardening alloy containing a large amount of Ti + Al. Cr
The content is 19% and it has excellent corrosion resistance. this
No. 5 is a work hardened by further adding a workability of 35%, and has a hardness of 440 Hv. The results are shown in FIG. 5, and it can be seen that the amount of wear is larger than the combination of No. 4 and No. 7 in FIG. Next, No. 6 and N
Looking at o.4, the components of No. 6 are almost the same as those of No. 5, but do not give the workability. Hardness is 490H
v. It is harder than No. 5 because it contains W and Fe elements, but it also has a large amount of wear. Even from the above comparison, the combination of No. 4 and No. 7 and No. 4'and No. 7 shown in FIG. 4, especially the combination of No. 4'and No. 7 is the best. I understand.
〔発明の効果〕 本発明による原子炉燃料制御棒は、Ｃｏを含まないＴｉ
基合金からなるガイドローラを有するため、Ｃｏの誘導
放射のおそれはなく、耐摩耗性と耐食性の両方に優れて
いるので構造上での信頼性が大きい等の利点がある。 [Advantages of the Invention] The reactor fuel control rod according to the present invention contains Ti containing no Co.
Since it has a guide roller made of a base alloy, there is no risk of induced radiation of Co, and there are advantages such as high structural reliability because it is excellent in both wear resistance and corrosion resistance.
第１図は原子炉燃料制御棒の構成図、第２図はガイドロ
ーラの構成図、第３図，第４図および第５図はそれぞれ
本発明の実施例および比較例における摩耗試験の結果を
示す線図である。 １……ハンドル、２……ガイドローラ、３……中性子吸
収ロツド、４……ブレード、５……ローラ、６……ピ
ン。FIG. 1 is a block diagram of a reactor fuel control rod, FIG. 2 is a block diagram of a guide roller, and FIGS. 3, 4, and 5 show the results of wear tests in Examples and Comparative Examples of the present invention, respectively. It is a diagram showing. 1 ... Handle, 2 ... Guide roller, 3 ... Neutron absorption rod, 4 ... Blade, 5 ... Roller, 6 ... Pin.
Claims (4)
状ブレードと、該ブレード内に収納された中性子吸収ロ
ッドと、前記ブレードの上下動に際してガイドするガイ
ドローラとを備えた原子炉燃料制御棒において、前記ガ
イドローラは中心孔を有し回転するローラと該ローラの
回転軸となるピンとを具備し、前記ピンは、Ｔｉ基合金
よりなりかつ、前記ローラは酸化雰囲気中で熱処理し表
面硬化層を設けたＴｉ基合金よりなることを特徴とする
原子炉燃料制御棒。1. A reactor fuel control rod comprising a handle, a cross-shaped blade connected to the handle, a neutron absorbing rod housed in the blade, and a guide roller for guiding the blade when the blade moves up and down. The guide roller comprises a rotating roller having a central hole and a pin serving as a rotation shaft of the roller, the pin being made of a Ti-based alloy, and the roller being heat-treated in an oxidizing atmosphere to form a surface-hardened layer. A reactor fuel control rod comprising a Ti-based alloy provided with.
側部材は、重量でＣ０．１％以下、Ａｌ１．０〜７．０
％を含み、Ｖ２．０〜６．０％及びＳｎ１．０〜６．０
％の一種または二種を含むＴｉ基合金よりなることを特
徴とする原子炉燃料制御棒。2. The pin side member according to claim 1, wherein C0.1% or less by weight and Al1.0 to 7.0.
%, V2.0 to 6.0% and Sn1.0 to 6.0
% Reactor fuel control rod, characterized in that it is made of a Ti-based alloy containing 1 or 2%.
ラ側部材は、重量でＣ０．１％以下、Ａｌ１．０〜７．
０％、Ｓｎ１．０〜６．０％を含むＴｉ基合金よりなる
ことを特徴とする原子炉燃料制御棒。3. The roller-side member according to claim 1, wherein the weight of the roller-side member is C0.1% or less and Al1.0 to 7.
A reactor fuel control rod comprising a Ti-based alloy containing 0% and Sn 1.0 to 6.0%.
気中での熱処理温度は４００℃〜８００℃の温度範囲で
あることを特徴とする原子炉燃料制御棒。4. The reactor fuel control rod according to claim 1, wherein the heat treatment temperature in the oxidizing atmosphere is in the temperature range of 400 ° C. to 800 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61020117A JPH0659706B2 (en) | 1986-02-03 | 1986-02-03 | Reactor fuel control rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61020117A JPH0659706B2 (en) | 1986-02-03 | 1986-02-03 | Reactor fuel control rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62178330A JPS62178330A (en) | 1987-08-05 |
| JPH0659706B2 true JPH0659706B2 (en) | 1994-08-10 |
Family
ID=12018177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61020117A Expired - Lifetime JPH0659706B2 (en) | 1986-02-03 | 1986-02-03 | Reactor fuel control rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0659706B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2581702B2 (en) * | 1987-09-08 | 1997-02-12 | 本田技研工業株式会社 | Sliding member of internal combustion engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647558A (en) * | 1979-09-25 | 1981-04-30 | Hitachi Ltd | Hardening method of surface of titanium alloy |
-
1986
- 1986-02-03 JP JP61020117A patent/JPH0659706B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62178330A (en) | 1987-08-05 |
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