SU577179A1 - Glass - Google Patents

Glass

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Publication number
SU577179A1
SU577179A1 SU7602393687A SU2393687A SU577179A1 SU 577179 A1 SU577179 A1 SU 577179A1 SU 7602393687 A SU7602393687 A SU 7602393687A SU 2393687 A SU2393687 A SU 2393687A SU 577179 A1 SU577179 A1 SU 577179A1
Authority
SU
USSR - Soviet Union
Prior art keywords
glass
bao
certificate
class
mol
Prior art date
Application number
SU7602393687A
Other languages
Russian (ru)
Inventor
Людвиг Апетович Мкртчян
Костан Артавздович Костанян
Валерий Григорьевич Джавадян
Original Assignee
Предприятие П/Я В-2268
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-2268 filed Critical Предприятие П/Я В-2268
Priority to SU7602393687A priority Critical patent/SU577179A1/en
Application granted granted Critical
Publication of SU577179A1 publication Critical patent/SU577179A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Description

tt

Изобретение относитс  к стеклу, предназначенному дл  использовани  в электронике при изготовлении оболочек электровакуумных приборов, работающих с парами щелочных металлов. The invention relates to glass intended for use in electronics in the manufacture of shells for vacuum devices operating with alkali metal vapors.

Известно стекло, устойчивое к парам цези , включающее, вес . % ; StO2 30 , 2Q, , ВаО 2Q l .Known glass resistant to cesium vapor, comprising, weight. %; StO2 30, 2Q,, BaO 2Q l.

Недостатком данного стекла  вл етс  повшоенна  склонность к кристаллизации в процессе варки и выработки.The disadvantage of this glass is the general tendency to crystallization during the process of cooking and generation.

Наиболее по технической сущности и достигаемому результату к изоретению  вл етс  стекло, содержащее, вес.%: 5i02l5-20, Bj0324-36, , 16-24, ВаО 18-30, 1-5 2. Недостатком такого стекла  вл етс  то, что вследствие проникновени  атмосферного гели  через стенки стеклооболочки не удаетс  сохранить длительное врем  высокий вакуум в приборах.Most of the technical essence and the achieved result to isoreteniy is glass containing, wt.%: 5i02l5-20, Bj0324-36,, 16-24, BaO 18-30, 1-5 2. The disadvantage of such glass is that due to the penetration of atmospheric gels through the walls of the glass shell, it is not possible to maintain a high vacuum in the instruments for a long time.

Цель изобретени  - уменьшить гелийпроницаемость стекла.The purpose of the invention is to reduce the helium permeability of glass.

Это достигаетс  введение..1 в состав t-i.jO при следующем соотношении компонентов , мол.%:This is achieved by introducing ..1 into the composition of t-i.jO with the following ratio of components, mol.%:

25-40 25-35 10-15 10-1 25-40 25-35 10-15 10-1

22

5-10 5-10

MgO 3- 5 MgO 3-5

Изобретение по сн етс  конкретными примерами, содержащими, мол . %:The invention is illustrated by specific examples containing, say, mol. %:

10 210 2

40 25 15 40 25 15

3232

1one

2. biOi2. biOi

3535

В.О, IN,

BjO, Bjo

13 А1,0, А1,0, 13 A1.0, A1.0,

10 12 5 3 ВаО ВаО 10 12 5 3 Bao Bao

б MgO b MgO

L.0L.0

4 LijO4 LijO

Стекла вар т при 1400-1420 С.Glass var t at 1400-1420 C.

Полученные стекла устойчивы к пара рубиди   о 200 С, тер ют свою светопрозрачность на 20-25% при 400°С и выдержке 12 ч., обеспечивают ваку мн-плотный спай с коваром (КЛТР 200«49-54Г10 1/град),The resulting glasses are resistant to rubidium vapor at about 200 ° C, lose their translucency by 20–25% at 400 ° C and a shutter speed of 12 h.

Коэффициент проницаемости дл  гели 200° С состав.п ет КGel permeability coefficient 200 ° С composition

.три температуре 200 -1,48-10 см -мм/см.Three temperatures 200 -1,48-10 cm-mm / cm.

.рт.ст.см сек. Даные стекла обеспечивают надежность и долговечность работы электровакуумны приборов, работающих с парами рубиди и в гелиевой среде..rt.cmc These glasses provide reliability and durability of work of electrovacuum devices working with rubidium vapor and in a helium environment.

Claims (1)

Формула изобретени Invention Formula Стекло, вкJтючaюtцee Sio , ВаО, , отличающеес  те что, с целью снижени  гелийпроницаемости , оно дополнительно содержитGlass including Sio, BaO,, characterized in that, in order to reduce helium permeability, it additionally contains 8 ,.,eight ,., ip при следующем соотношениикомгю- Источники информации, прин тые воip with the following ratio of -GY- Sources of information taken in нентов мол %внимание при экспертизе:nantov mol% attention during examination: 25-40 25-40 В О 25-35 Авторское свидетельство СССРVO 25-35 USSR Author's Certificate AIjO, 10-155 П8320, кл. С 03 С 3/08, 195R ВаО 10-15AIjO, 10-155, P8320, class C 03 C 3/08, 195R BaO 10-15 Mg-0 5-102. ABTOpJCKOe свидетельство СССГMg-0 5-102. ABTOpJCKOe certificate of SSSG l-ijO 3-5 540830, кл. С 03 С 3/08, 1974,l-ijO 3-5 540830, class From 03 On 3/08, 1974,
SU7602393687A 1976-07-20 1976-07-20 Glass SU577179A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU7602393687A SU577179A1 (en) 1976-07-20 1976-07-20 Glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7602393687A SU577179A1 (en) 1976-07-20 1976-07-20 Glass

Publications (1)

Publication Number Publication Date
SU577179A1 true SU577179A1 (en) 1977-10-25

Family

ID=20673177

Family Applications (1)

Application Number Title Priority Date Filing Date
SU7602393687A SU577179A1 (en) 1976-07-20 1976-07-20 Glass

Country Status (1)

Country Link
SU (1) SU577179A1 (en)

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