JPH01236538A - Impregnated negative electrode structure - Google Patents
Impregnated negative electrode structureInfo
- Publication number
- JPH01236538A JPH01236538A JP63060399A JP6039988A JPH01236538A JP H01236538 A JPH01236538 A JP H01236538A JP 63060399 A JP63060399 A JP 63060399A JP 6039988 A JP6039988 A JP 6039988A JP H01236538 A JPH01236538 A JP H01236538A
- Authority
- JP
- Japan
- Prior art keywords
- pellet
- cup
- brazing material
- dia
- brazing
- 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
- 239000008188 pellet Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000005219 brazing Methods 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 229910019582 Cr V Inorganic materials 0.000 claims abstract description 5
- 229910052737 gold Inorganic materials 0.000 claims abstract description 4
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 229910052707 ruthenium Inorganic materials 0.000 abstract description 4
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- 230000005496 eutectics Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 8
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は含浸形陰極構体に係り、特をこ電子放出物質を
含浸させたペレットと、このペレットを装着するカップ
との固看構遺優こ関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an impregnated cathode structure, and particularly to a fixed structure of a pellet impregnated with an electron-emitting substance and a cup in which the pellet is mounted. Regarding this.
〔従来の技術〕・
多孔質基体よりなるペレットは、一般にＷ材よりなるが
、時としてＭｏ、Ｎｉ等を含む高融点金属が用いられる
。また電子放出特性を向上させるために、ペレットの表
面に０８．１１％Ｒｕあるいはこれらの合金を被覆する
のが一般的であり、動作温度が約１０００℃である。従
って、ペレットを装着するカップ及びこのカップを支持
するスリーブもＭｏ 、 ’ｒａ 、 Ｗあるいはこれ
らを含む合金で作られる。[Prior Art] Pellets made of a porous substrate are generally made of W material, but high melting point metals containing Mo, Ni, etc. are sometimes used. Further, in order to improve electron emission characteristics, the surface of the pellet is generally coated with 08.11% Ru or an alloy thereof, and the operating temperature is about 1000°C. Therefore, the cup in which the pellets are mounted and the sleeve supporting this cup are also made of Mo, 'ra, W, or alloys containing these.
従来、ペレットとカップとの固着を、例えば特開昭５９
−１０８２３３号憂こ示すようφこ、ペレットとカップ
との間１ころう材を介在させ、抵抗浴接により行ったも
のが知られている。Conventionally, the adhesion of pellets and cups has been studied, for example, in Japanese Unexamined Patent Publication No. 59
As shown in No. 108233, a method is known in which a solder metal is interposed between the pellet and the cup and resistance bath welding is performed.
このよう曇こ、ペレットとカップ間番ころう材を介在さ
せることにより、ペレットとカップ間の接触抵抗を高め
たことと等価（こなるので、ｆｆＩ接時の発熱はペレッ
ト・ろう材・カップ間の界面番こ集中し、ろう材には大
きなジュール熱が発生してろう材が簡単に溶融し、ペレ
ットは発熱なく固着される。By interposing the brazing filler metal between the pellet and the cup, this is equivalent to increasing the contact resistance between the pellet and the cup. When the heat is concentrated at the interface, large Joule heat is generated in the brazing material, which easily melts the brazing material, and the pellets are fixed without generating heat.
これにより、固着強度が向上すると共条こ、電子放出特
性の劣化が防止される。As a result, when the fixing strength is improved, the deterioration of the electron emission characteristics is prevented.
上記従来技術は、ろう材として、ルｅ単独、５０％ＦＬ
ｅ−５０％Ｍｏまたは２５％Ｒ，ｅ−Ｗを用いている。The above conventional technology uses Le alone as the brazing filler metal and 50% FL.
e-50%Mo or 25%R, e-W is used.
しかし、これの材料は前記したペレット材及びカップ材
よりも電気抵抗率が１．５〜２倍程度であり、ベレット
の発熱を完全ｌこ防止することはできない。However, this material has an electrical resistivity of about 1.5 to 2 times that of the pellet material and cup material described above, and cannot completely prevent the pellet from generating heat.
本発明の目的は、ベレットの発熱を完全に防止すること
ができると共に、より一層強Ｉｔｉ１１こ固着すること
ができる含浸形ＰＫ極構体を提供すること普こある。An object of the present invention is to provide an impregnated PK pole structure which can completely prevent the pellet from generating heat and can even more strongly fix the pellet.
上記目的は、ろう材として、Ｍｏ−几ｕ、 Ｐｄ、 ｋ
ｕ＊Ｃｒ−ＶまたはＮｉもしくはこれらの合金を用いる
ことにより達成される。The above purpose is to use Mo-U, Pd, K as a brazing filler metal.
This is achieved by using u*Cr-V or Ni or an alloy thereof.
〔作用」
Ｍｏ−ａｕ、 Ｐｄ、 Ａｕ、 Ｃｒ−ＶまたハＮｉモ
しくハコれらの合金よりなるろう材は、ペレット材及び
カップ材よりも電気抵抗率が数〜ｌＯ倍程度高いので、
−ノー効果が大きい。即ち、溶接時の発熱は、ベレット
・ろう材・カップ間の界面醗こ完全憂こ楽申し、ベレッ
トの発熱は完全着こ防止されると共に、ベレットとカッ
プはより一層強固に固着する。[Function] Brazing filler metals made of alloys of Mo-au, Pd, Au, Cr-V, and Ni moss have an electrical resistivity several to 10 times higher than pellet materials and cup materials.
-The no effect is large. That is, the heat generated during welding is completely suppressed by the interface between the pellet, the brazing metal, and the cup, and the heat generated by the pellet is completely prevented from being deposited, and the pellet and cup are even more firmly bonded.
以下、本発明の一実施例を第１図乃至第３図により説明
する。第１図及び第２図において、ベレット１は直径１
．２５ ｓｍｓ厚さ０．４５＃ＩｍのＷ材、カップ２は
内径１．２５ｓａ＊、外径１．３５＋ｍ、高さ０．４５
ｍのＭｏ材、ろう材３は直径１．２ｍ、 厚さ３０μ
ｍに打ち抜かれた円板のＭｏ−４１，６ａｔ ％ Ｒｕ
共晶ろうからなる。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In Figures 1 and 2, the pellet 1 has a diameter of 1
．． 25 sms W material with thickness 0.45#Im, cup 2 has inner diameter 1.25sa*, outer diameter 1.35+m, height 0.45
m Mo material, brazing material 3 has a diameter of 1.2 m and a thickness of 30 μ
Mo-41,6at%Ru of a disk punched in m
Consists of eutectic wax.
そして、カップ２にろう材３を介在させてベレット１を
装着し、小型スポット溶接機を用いてベレット１とカッ
プ２を固着してなる。スポット溶接条件は加圧力３〜す
ｋｙｆ、パワー０，５〜４．５ ＫＷ 。Then, the pellet 1 is attached to the cup 2 with a brazing material 3 interposed therebetween, and the pellet 1 and the cup 2 are fixed together using a small spot welding machine. The spot welding conditions were a pressure of 3 to kyf and a power of 0.5 to 4.5 KW.
溶接時間０．７〜２４ｍ５で、溶接雰囲気はＡｒ気流中
で実施した。実験の結果、ベレットｌとカップ２間の固
着強度は、カロ圧力、浴接時間ｌこは大きく依存しなか
った。最も固着強度を左右したのはパワーであった。The welding time was 0.7 to 24 m5, and the welding atmosphere was Ar air flow. As a result of the experiment, the adhesion strength between the pellet 1 and the cup 2 did not depend greatly on the Calo pressure or the bath contact time. Power had the greatest effect on adhesion strength.
第３図（こパワーと固着強度の関係を示す。スポット溶
接条件は、加圧力３匈ｆ１溶接時間１．４ｍｓである。FIG. 3 shows the relationship between power and adhesion strength. The spot welding conditions are a pressing force of 3 cm and a welding time of 1.4 ms.
また固着強度はベレット１の上部とカップ２の底部を瞬
間接着材で治具擾こ固定し、引張り試験を行なった時の
値である。固着強度が１．５に９ｆ／γ以上ではカップ
２自身の破損が見られた。ろう材３を使用しないで浴接
した場合には０．１〜０４ｋｇｆ／γと強度が小さい上
にばらつきも大きかった。The adhesion strength is the value obtained when a tensile test was performed by fixing the top of the pellet 1 and the bottom of the cup 2 using an instant adhesive using a jig. When the adhesion strength was 1.5 and 9f/γ or more, damage to the cup 2 itself was observed. When bath welding was performed without using the brazing filler metal 3, the strength was low at 0.1 to 04 kgf/γ, and the variation was large.
ろう材３を用いた場合、１．５ｔｃｇｆ／ケを示したも
のはパワーが３ＫＷあった。実用的（こはに＃ｌｆ／’
ゲ以上で充分で、これを満足するものは１．５ ＫＷ以
上のパワーで浴接すれば良い。When brazing filler metal 3 was used, the power was 3 KW which showed 1.5 tcgf/ke. Practical (Kohani#lf/'
A power of 1.5 KW or more is sufficient, and those that satisfy this need to use a power of 1.5 KW or more.
このようにベレット１を溶接固着したカップ２を、ｚｉ
図をこ示すよ・〉にスリーブ４昏こレーデ溶接によって
固着し、スリーブ４内會こ加熱ヒータ５を配設し、真空
容器中で空甲故出特性を測定し５た結果、スボント溶接
前の易性を維持していた。また動作６度（こ刺違する時
間（立上り時間）は、ろう材３を使用したことにより７
．５８から６．４８ｉこ約１．１３’Ｅ１縮できた。−
これは、ベレットｌとカップ２間の固層面積が増したた
めである。The cup 2 with the pellet 1 welded and fixed in this way is
As shown in the figure, the sleeve 4 was fixed by welding, a heater 5 was placed inside the sleeve 4, and the air shell breakout characteristics were measured in a vacuum container. The ease of use was maintained. In addition, the operation time (rise time) of 6 degrees is 7 degrees due to the use of brazing filler metal 3.
．． 58 to 6.48i could be reduced by about 1.13'E1. −
This is because the solid area between the pellet 1 and the cup 2 has increased.
第４図は本発明の他の実施例を示す。本実施例はベレッ
ト１の底面に凹部１ａを設けてなる。この場合には第１
図の場合ｌこ比べてベレット１とカップ２間隔が僅か小
さくなるが、特性には差は見られなかった。FIG. 4 shows another embodiment of the invention. In this embodiment, a recess 1a is provided on the bottom surface of the pellet 1. In this case, the first
In the case shown in the figure, the distance between the pellet 1 and the cup 2 is slightly smaller than that shown in the figure, but no difference was observed in the characteristics.
なお、上記実施例においてはろう材３としてＭ。In the above embodiment, M is used as the brazing material 3.
−ａＵろうを用いた場合について説明したが、Ｐｄ。- Although the case where aU wax was used was explained, Pd.
Ａｕ、Ｃｒ−Ｖろうまたはこれらを含む合金でもよい。Au, Cr-V solder, or an alloy containing these may be used.
また融点は低いが使用中にベレット１またはカップ２へ
拡散同情するようｆｌＮｉ系ろうでも艮い。Also, although the melting point is low, flNi-based wax can also be used so that it will diffuse into the pellet 1 or cup 2 during use.
またろう材３の形状は、薄板状や粉末状いずれでも良い
。薄板状のものは、ベレット１の外径やカップ２の内径
に合せて円板状に打抜いて用い−ると便利である。粉末
状のろう材は、カップ２の内面擾こ直接塗布したり、あ
るいはバインダーと共（こカップ２の内面やベレット１
の底面曇こ塗布、焼付けて用いる。Further, the shape of the brazing material 3 may be either a thin plate or a powder. It is convenient to use a thin plate by punching it into a disc shape that matches the outer diameter of the pellet 1 and the inner diameter of the cup 2. Powdered brazing filler metal can be applied directly to the inner surface of cup 2, or together with a binder (on the inner surface of cup 2 or pellet 1).
Apply a frosted coating to the bottom and bake.
本発明によれば、ペレット材及びカップ材よりも電気抵
抗率が数〜ｌＯ倍程度高いＭｏ−Ｒｕ等のろう材を用い
てベレットとカップとを固着するので、ペレットの発熱
を完全１こ防止することができると共に、より一層強固
憂こ固着することができる。According to the present invention, since the pellet and cup are fixed using a brazing material such as Mo-Ru, which has an electrical resistivity several to 10 times higher than that of the pellet material and the cup material, heat generation of the pellet is completely prevented. At the same time, it is possible to fix the problem even more firmly.
第１図は本発明の一実施例を示す断面図、第２図は第１
図の要部構成部品の斜視図、第３図はスポット溶接時の
パワーとペレット・カップ間の固着強度の関係図、第４
図は本発明の他の実施例を示す断面図である。
１・・ペレット、 ２・・カップ、 ３・・ろ
う材。
第１図 第２図
第３図 第４図
１ずクー（ＫＷＩFIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
Figure 3 is a diagram of the relationship between the power during spot welding and the adhesion strength between the pellet and cup, Figure 4 is a perspective view of the main components shown in the figure.
The figure is a sectional view showing another embodiment of the present invention. 1. Pellet, 2. Cup, 3. Brazing material. Figure 1 Figure 2 Figure 3 Figure 4 Figure 1
Claims (1)
なるカップとの間にろう材を介在させ、ペレットとカッ
プとを溶接により固着した含浸形陰極構体において、前
記ろう材は、Ｍｏ−Ｒｕ、Ｐｄ、Ａｕ、Ｃｒ−Ｖまたは
Ｎｉもしくはこれらを含む合金からなることを特徴とす
る含浸形陰極構体。1. In an impregnated cathode structure in which a brazing material is interposed between a pellet impregnated with an electron-emitting substance and a cup made of a high-melting point metal, and the pellet and cup are fixed by welding, the brazing material is Mo-Ru, An impregnated cathode structure comprising Pd, Au, Cr-V, Ni, or an alloy containing these.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63060399A JPH01236538A (en) | 1988-03-16 | 1988-03-16 | Impregnated negative electrode structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63060399A JPH01236538A (en) | 1988-03-16 | 1988-03-16 | Impregnated negative electrode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01236538A true JPH01236538A (en) | 1989-09-21 |
Family
ID=13141047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63060399A Pending JPH01236538A (en) | 1988-03-16 | 1988-03-16 | Impregnated negative electrode structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01236538A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4104943A1 (en) * | 1990-03-13 | 1991-09-19 | Samsung Electronic Devices | Impregnated supply cathode for large projection tube - has metal matrix in cup fixed in sleeve by laser welding |
| ES2129303A1 (en) * | 1994-12-28 | 1999-06-01 | Samsung Display Devices Co Ltd | Directly heated cathode structure |
-
1988
- 1988-03-16 JP JP63060399A patent/JPH01236538A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4104943A1 (en) * | 1990-03-13 | 1991-09-19 | Samsung Electronic Devices | Impregnated supply cathode for large projection tube - has metal matrix in cup fixed in sleeve by laser welding |
| ES2129303A1 (en) * | 1994-12-28 | 1999-06-01 | Samsung Display Devices Co Ltd | Directly heated cathode structure |
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