JPS6122539A - Electron gun part - Google Patents
Electron gun partInfo
- Publication number
- JPS6122539A JPS6122539A JP14051884A JP14051884A JPS6122539A JP S6122539 A JPS6122539 A JP S6122539A JP 14051884 A JP14051884 A JP 14051884A JP 14051884 A JP14051884 A JP 14051884A JP S6122539 A JPS6122539 A JP S6122539A
- Authority
- JP
- Japan
- Prior art keywords
- electron gun
- electron
- gun part
- tube
- parts
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は高真空中で使用され、高温に加熱されたり、電
子衝撃にさらされても、ガス放出が少なく、この電子銃
部品を使用した電子管の特性を劣化させないようにした
電子銃部品に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention provides an electron tube using this electron gun component, which releases little gas even when used in a high vacuum, heated to high temperatures, or exposed to electron bombardment. This invention relates to electron gun parts that do not deteriorate the characteristics of the electron gun.
近年、量産される電子管たとえば陰極線管の高真空外囲
器内で使用される電子銃の部品のうち、剛性あるいは形
状保持性を必要とし、かつ形状がやや複雑な部品を粉末
冶金法で製作することが試みられるようになって来た。In recent years, among the parts of electron guns used in the high-vacuum envelope of mass-produced electron tubes, such as cathode ray tubes, parts that require rigidity or shape retention and have somewhat complex shapes are manufactured using powder metallurgy. Things are starting to be tried.
これは、量産品の場合、肉厚がプレス部品などに比して
厚く、剛性の高い部品を機械加工によって作ろうとする
と、高価になってしまい、粉末冶金法で製作する方が安
価になって来たからである。This is because, in the case of mass-produced products, if you try to make parts with thicker walls and higher rigidity than press parts etc. by machining, it will be expensive, and it is cheaper to make it by powder metallurgy. Because it came.
しかし、この種の粉末冶金法による部品は、形状が簡単
でスウェージングを十分行える線材の場合とは異なり、
どうしても内部に空孔が残留してしまい、高温に加熱さ
れたり、電子衝撃にさらされたりすると、空孔内部に吸
蔵していたガスを放出して管内の真空度を低下させ、そ
の部品を使用する電子管の性能を劣化させるという問題
があった。 そのため、従来は、粉末冶金法による部品
は、温度上昇の少ない個所などの限られた範囲内で使用
されるのにとどまっていた。However, parts made using this type of powder metallurgy are different from wire rods, which have a simple shape and can be swaged easily.
If pores inevitably remain inside the tube and are heated to high temperatures or exposed to electron bombardment, the gas stored inside the pores will be released and the degree of vacuum inside the tube will decrease, making it impossible to use the parts again. There was a problem in that the performance of the electron tube deteriorated. Therefore, conventionally, parts made by powder metallurgy have been used only in limited areas such as areas where the temperature rise is small.
本発明の目的は、上記従来製品のような問題を生じない
粉末冶金法により製作された電子銃部品を提供すること
にある。SUMMARY OF THE INVENTION An object of the present invention is to provide an electron gun component manufactured by powder metallurgy that does not cause the problems of the conventional products described above.
上記目的を達成するために本発明におい゛ては、その素
材粉末中にZr又はHfを0.1〜10重量%含む合金
を使用して、粉末冶金法により電子銃部品を製作するこ
とにした。In order to achieve the above object, in the present invention, electron gun parts are manufactured by powder metallurgy using an alloy containing 0.1 to 10% by weight of Zr or Hf in its raw material powder. .
周知のように、ZrやHfは、良好なガス吸着性能いわ
ゆるゲッタリング性能を有するので、その電子銃部品自
体が、高温において残留空孔から放出しかけたガスを忽
ち吸着してしまうことが出来、電子管内の空間にガスが
放出されることを抑制して管内真空度の低下を防止し、
それによって電子管特性の劣化を防止できるのである。As is well known, Zr and Hf have good gas adsorption performance, so-called gettering performance, so that the electron gun parts themselves can immediately adsorb gas that is about to be released from residual pores at high temperatures. Suppresses the release of gas into the space inside the electron tube and prevents the vacuum level inside the tube from decreasing.
This makes it possible to prevent deterioration of electron tube characteristics.
ZrやHfの含有量を0.1〜10重量%としたのは、
含有量が0.1%以下では十分なゲッタリング効果が得
られないし、また10%以上含有させると多量にガスを
吸着した状態での自己形状維持性が不十分(ボロボロに
なる)になってしまうからである。The content of Zr and Hf was set to 0.1 to 10% by weight because
If the content is less than 0.1%, a sufficient gettering effect cannot be obtained, and if the content is more than 10%, the self-shape maintenance property when a large amount of gas is adsorbed becomes insufficient (it becomes crumbly). This is because it will be put away.
〔発明の実施例〕 第1図は陰極線管の電子銃部分の概略を示す。[Embodiments of the invention] FIG. 1 schematically shows the electron gun portion of a cathode ray tube.
図中、1はヒータ、2はカソード、3はガラスバルブ、
4は電子銃部品である。In the figure, 1 is a heater, 2 is a cathode, 3 is a glass bulb,
4 is an electron gun component.
第1図に示した電子銃部品4は、カソード2から放出さ
れた電子流を細いビームに集束する静電レンズを形成す
るものであるが、従来は板材をプレス加工して製作して
いた。しかし、このようにして製作された部品は、剛性
が不十分なことも原因となって、静電レンズを通過する
電子ビームの電子の一部に射突されて高温に加熱される
と、変形するものが少な(ないなどの問題があった。そ
のため、これらの電子銃部品を肉厚が1mm以上あるい
わゆるブロック構造にすることが検討された。この場合
、圧延法で製作され、材質が緻密な厚板や棒材などから
、機械加工により切削して作ったのでは、多大な工数を
必要とし、性能は良(でも、価格が非常に高いものとな
ってしまう。したがって、粉末冶金法により製作するこ
とが検討されたが、粉末材料を加圧焼結して製作するの
であるから、どうしても多少の空孔が残留することは免
れず、上記電子の射突による高温加熱によって、空孔内
の吸蔵ガスが放出され、この部品を使用する陰極線管内
の真空度を低下させ、特性を劣化させ、特に寿命を大幅
に短くするなどの欠点が認められた。The electron gun component 4 shown in FIG. 1 forms an electrostatic lens that focuses the electron flow emitted from the cathode 2 into a narrow beam, and has conventionally been manufactured by pressing a plate material. However, parts manufactured in this way do not have sufficient rigidity, and when they are hit by some of the electrons from the electron beam passing through the electrostatic lens and heated to high temperatures, they deform. Therefore, it was considered that these electron gun parts should be made into a so-called block structure with a wall thickness of 1 mm or more. If they were made by machine cutting from thick plates or bars, it would require a large amount of man-hours and the performance would be good (but the price would be very high. Therefore, powder metallurgy However, since the powder material is manufactured by pressure sintering, it is inevitable that some pores will remain, and the high temperature heating caused by the bombardment of the electrons will cause the pores to disappear. It has been recognized that the storage gas is released, lowering the degree of vacuum inside the cathode ray tube in which this component is used, deteriorating its characteristics, and in particular significantly shortening its life.
このような問題に対処するために、本発明を実施した部
品を用いて陰極線管を製作したところ、部品の変形も認
められず、かつ陰極線管内の真空度の大きい低下や、そ
れに伴うカソードの電子放出特性の劣化、短寿命なども
認められなかった。In order to deal with these problems, a cathode ray tube was fabricated using parts according to the present invention, and no deformation of the parts was observed. No deterioration in release characteristics or short life was observed.
第2図は、本発明に係る電子銃部品の拡大断面図で、5
は基体結晶、6はZrと基体との合金相、7は空孔であ
る。。この合金相のZrが、部品が高温に加熱された時
に、放出されかけたガスを吸着して、陰極線管内の真空
度低下を防止するのである。FIG. 2 is an enlarged cross-sectional view of an electron gun component according to the present invention.
is a base crystal, 6 is an alloy phase of Zr and the base, and 7 is a vacancy. . This alloy phase of Zr adsorbs the gas that is about to be released when the component is heated to a high temperature, thereby preventing the degree of vacuum inside the cathode ray tube from decreasing.
なお、本発明を実施した電子銃部品の製作に際しては、
比較的含有量の少ないゲッタ成分のZrやHfが、部品
自体の製造工程や、その後の保管中などに、酸化されて
ゲッタ性能が低下してしまわないように、十分な管理を
行うことが必要である。In addition, when manufacturing electron gun parts implementing the present invention,
It is necessary to perform sufficient management to prevent getter performance from decreasing due to oxidation of the getter components Zr and Hf, which have relatively low contents, during the manufacturing process of the parts themselves or during subsequent storage. It is.
、 以上説明したように本発明によれば、粉末冶金法
により製作した電子銃部品のガス放出が実質上防止され
、静電レンズ部品など、変形を嫌い、かつ高温に加熱さ
れるものにも実用に供することが可能となる。As explained above, according to the present invention, gas emission from electron gun parts manufactured by powder metallurgy is substantially prevented, and it can be put to practical use even in parts such as electrostatic lens parts that do not like deformation and are heated to high temperatures. It becomes possible to provide
Claims (1)
製作され、その素材粉末中にZrまたはHfを0.1〜
10重量%含む合金を使用したことを特徴とする電子銃
部品。Electron gun parts used in high vacuum, manufactured by powder metallurgy, with 0.1 to 0.1 to
An electron gun component characterized by using an alloy containing 10% by weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14051884A JPS6122539A (en) | 1984-07-09 | 1984-07-09 | Electron gun part |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14051884A JPS6122539A (en) | 1984-07-09 | 1984-07-09 | Electron gun part |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6122539A true JPS6122539A (en) | 1986-01-31 |
Family
ID=15270518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14051884A Pending JPS6122539A (en) | 1984-07-09 | 1984-07-09 | Electron gun part |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6122539A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01192896A (en) * | 1988-01-20 | 1989-08-02 | Asahi Chem Ind Co Ltd | Polymer latex for paper coating |
-
1984
- 1984-07-09 JP JP14051884A patent/JPS6122539A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01192896A (en) * | 1988-01-20 | 1989-08-02 | Asahi Chem Ind Co Ltd | Polymer latex for paper coating |
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