JP2011159623A - X線陰極及びその製造方法 - Google Patents
X線陰極及びその製造方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title abstract description 27
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 85
- 239000011248 coating agent Substances 0.000 claims abstract description 84
- 239000000758 substrate Substances 0.000 claims abstract description 66
- 238000010894 electron beam technology Methods 0.000 claims abstract description 39
- 230000000694 effects Effects 0.000 claims abstract description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 15
- 229910052721 tungsten Inorganic materials 0.000 claims description 14
- 239000010937 tungsten Substances 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 10
- 229910052735 hafnium Inorganic materials 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- WHJFNYXPKGDKBB-UHFFFAOYSA-N hafnium;methane Chemical compound C.[Hf] WHJFNYXPKGDKBB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 229910026551 ZrC Inorganic materials 0.000 claims description 5
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 claims description 5
- XSPFOMKWOOBHNA-UHFFFAOYSA-N bis(boranylidyne)tungsten Chemical compound B#[W]#B XSPFOMKWOOBHNA-UHFFFAOYSA-N 0.000 claims description 5
- MELCCCHYSRGEEL-UHFFFAOYSA-N hafnium diboride Chemical compound [Hf]1B=B1 MELCCCHYSRGEEL-UHFFFAOYSA-N 0.000 claims description 5
- -1 hafnium nitride Chemical class 0.000 claims description 5
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 5
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 5
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 5
- ZVWKZXLXHLZXLS-UHFFFAOYSA-N zirconium nitride Chemical compound [Zr]#N ZVWKZXLXHLZXLS-UHFFFAOYSA-N 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 238000000713 high-energy ball milling Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 16
- 230000006870 function Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 8
- 238000013480 data collection Methods 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 6
- 230000008016 vaporization Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000002591 computed tomography Methods 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000005461 Bremsstrahlung Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013170 computed tomography imaging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000001393 microlithography Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 150000003657 tungsten Chemical class 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/26—Supports for the emissive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/06—Cathodes
- H01J35/064—Details of the emitter, e.g. material or structure
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
Abstract
【解決手段】開示した実施形態はX線管陰極フィラメントシステムなどの実施形態を含む。本X線管陰極フィラメントシステムは、サブストレートと該サブストレート上に配置されたコーティング(74)とを含む。本陰極フィラメントシステムでは、サブストレートからではなくコーティング(74)から電子ビーム(18、90)が放出される。電子ビーム(18、90)は熱電子効果を使用することにより発生させている。
【選択図】図3
Description
12 X線源
14 陰極アセンブリ
16 陽極
18 電子ビーム
20 X線ビーム
22 コリメータ
24 対象
26 減衰部分
28 検出器
30 システム制御器
32 直線位置決めサブシステム
34 回転サブシステム
36 モータ制御器
38 X線制御器
40 データ収集システム
42 コンピュータ
44 データ処理回路
46 メモリ
48 オペレータワークステーション
50 ディスプレイ
52 プリンタ
54 画像蓄積伝送システム(PACS)
56 リモートシステム
58 X線管アセンブリ
60 バイアス電極
62 バイアス電極
64 バイアス電極
66 バイアス電極
68 フィラメント
69 引出電極
70 遮蔽
71 開口部
72 焦点
74 コーティング
76 サブストレート
77 スロット
78 フィラメント
79 開口部
80 サブストレート
82 フィラメント
84 反射体カップ
85 湾曲部分
86 湾曲した円盤フィラメント
87 湾曲したサブストレート
88 電子発生源
90 電子ビーム
Claims (15)
- サブストレートと、
前記サブストレート上に配置されたコーティング(74)と、を備えたX線管陰極アセンブリシステムであって、
熱電子効果を介して前記サブストレートからではなく前記コーティング(74)から電子ビーム(18、90)が放出されている、X線管陰極アセンブリシステム。 - 前記コーティング(74)は、炭化ハフニウム、炭化タンタル、二ホウ化ハフニウム、炭化ジルコニウム、窒化ハフニウム、窒化タンタル、窒化ジルコニウム、二ホウ化タングステンのうちの少なくとも1つを含む、請求項1に記載のシステム。
- 前記サブストレートは、タングステン、タンタル、ドープしたタングステン、ドープしたタンタルのうちの少なくとも1つを含む、請求項1に記載のシステム。
- 前記サブストレートは、平坦なサブストレート(76)、ワインド式サブストレート(80)、湾曲したサブストレート(87)、スロット付き(77)サブストレートのうちの少なくとも1つを含む、請求項1に記載のシステム。
- 前記コーティング(74)は前記サブストレートを部分的に覆っている、請求項1に記載のシステム。
- 前記コーティング(74)は概ね4.5電子ボルト(eV)未満の仕事関数を備える、請求項1に記載のシステム。
- 前記コーティング(74)は概ね3400℃を超える融点を備える、請求項1に記載のシステム。
- 前記熱電子効果は、直接加熱、間接加熱、あるいはこれらの組み合わせを介して実現される、請求項1に記載のシステム。
- 前記コーティング(74)は、化学蒸着法、スパッタリング、粉体加圧成形、高エネルギーボールミル加工、焼結、高温浸炭、あるいはこれらの組み合わせの利用によって前記サブストレート上に配置される、請求項1に記載のシステム。
- サブストレート上に配置されたコーティング(74)を備えた第1の陰極フィラメントと、
前記第1の陰極フィラメントから陰極・ターゲット間距離だけ離しかつこれと対面して位置決めされたターゲット陽極(16)であって、熱電子効果を介して前記サブストレートからではなく該第1の陰極フィラメントのコーティング(74)から第1の電子ストリーム(18、90)が放出されると共に、これがX線(20)を発生させるために該ターゲット陽極(16)上の第1の焦点(72)まで加速されているターゲット陽極(16)と、
を備えるX線管システム。 - 前記コーティング(74)は、炭化ハフニウム、炭化タンタル、二ホウ化ハフニウム、炭化ジルコニウム、窒化ハフニウム、窒化タンタル、窒化ジルコニウム、二ホウ化タングステンのうちの少なくとも1つを含み、かつ前記サブストレートはタングステン、タンタル、ドープしたタングステン、ドープしたタンタルのうちの少なくとも1つを含む、請求項10に記載のシステム。
- 前記陰極・ターゲット間距離は概ね40mmを超える距離を備える、請求項10に記載のシステム。
- 少なくとも1つのバイアス電極(60、62、64、66)、反射体カップ(84)、またはこれらの組み合わせを備えており、該バイアス電極(60、62、64、66)は前記第1の電子ストリーム(18、90)を能動的に偏向させており、かつ該反射体カップ(84)は該第1の電子ストリーム(18、90)を受動的に整形している、請求項10に記載のシステム。
- 前記第1の陰極フィラメントから陰極・電極間距離だけ離して位置決めされた引出電極(69)を備えており、該引出電極(69)は前記第1の電子ストリーム(18、90)をターゲット陽極(16)上の第1の焦点(72)まで加速させる支援をする、請求項10に記載のシステム。
- 前記陰極・電極間距離は概ね15mmを超える距離を備える、請求項14に記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/698,851 | 2010-02-02 | ||
US12/698,851 US8385506B2 (en) | 2010-02-02 | 2010-02-02 | X-ray cathode and method of manufacture thereof |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011159623A true JP2011159623A (ja) | 2011-08-18 |
JP2011159623A5 JP2011159623A5 (ja) | 2014-01-30 |
JP5719162B2 JP5719162B2 (ja) | 2015-05-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010279974A Active JP5719162B2 (ja) | 2010-02-02 | 2010-12-16 | X線管陰極アセンブリシステム及び、x線管システム |
Country Status (4)
Country | Link |
---|---|
US (1) | US8385506B2 (ja) |
JP (1) | JP5719162B2 (ja) |
CN (1) | CN102142346B (ja) |
DE (1) | DE102010061584A1 (ja) |
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- 2010-12-27 CN CN201010623682.3A patent/CN102142346B/zh not_active Expired - Fee Related
- 2010-12-27 DE DE102010061584A patent/DE102010061584A1/de not_active Ceased
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Also Published As
Publication number | Publication date |
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DE102010061584A1 (de) | 2011-08-04 |
US8385506B2 (en) | 2013-02-26 |
JP5719162B2 (ja) | 2015-05-13 |
CN102142346A (zh) | 2011-08-03 |
CN102142346B (zh) | 2017-04-12 |
US20110188637A1 (en) | 2011-08-04 |
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