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Digest of Literature on Dielectrics Volume XI (1947) / Chapter Skim
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VI Ceramic Insulation
Pages 62-67

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From page 62...
... ;r sealing compound fused +,ogether under pres sure at 900°C O Gainer patentec9.2 a spark plug insulator comprising a fired mixture containing a major proportion of zirconium oxide rails mag~neslum oxide, +,h~ modal proportion of zirconium oxide to magnesium oxide being began 2 to ~ and 1 to 20 Schaefer patented3 a vitreous alumina base cellar c ns Mating material containing at least 121: clay and a small amount of a~kaline-earth p~nos-:nate, the aluminum oxide content being at least 73%. Vitrification temperatures es Jot as 14000c were obtained.
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From page 63...
... [~.Cicre~scopic and X-rar e;
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From page 64...
... If perfectly matching thermal expansion properties arc not possible, successful seals me.y be formed ~4 tl,o metal is thin and ductile enough to be deformed by differential expansions . Met~l-to-ceramic seals developed by Telefunken20 replaced glass ..s the bonding agent by a sPeci&1 ceramic pc^.st~ composed of the followings 10~20 steatite, 1.44 zettlitz kaolin, 0.48 zirconium and 0~24 kg of potassium feldspar.
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From page 65...
... 25 describe a machine for forming thin ceramic die' ectric sheets for capacitors . ~ ceramic slip is Elutoma+.ical.1.~y deposited con a sta::r~less Steel belt moving through a Writing tunnel.
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From page 66...
... ~ 7. - Thurnauer, Hans, Forsterite' a Low Loss Ceramic Dielectric Immaterial.
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From page 67...
... S ~,i~ cular 468 43 pp., :1947 Printed Circuit Techniques.
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Key Terms

  • thermal expansion
  • ceramic dielectric
  • zirconium oxide
  • temperature coefficient
  • lanthanum oxide

  • low loss
  • ceramic materials
  • yttrium oxide
  • capacity comprising
  • magnesium metasilicate

  • loving various
  • nits hydride
  • discussed fit
  • bonding glasses
  • comprising substar

  • cha toga
  • monolithic structure
  • joints include
  • oxide rails
  • germans developed

  • inch uding
  • sealing compound
  • electra cal
  • zircon porcelains
  • form density

  • metal ind
  • electrical lusty
  • seal employing
  • hermetic serifs
  • pyrex glass


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