JPH0238731U - - Google Patents

Info

Publication number
JPH0238731U
JPH0238731U JP11811488U JP11811488U JPH0238731U JP H0238731 U JPH0238731 U JP H0238731U JP 11811488 U JP11811488 U JP 11811488U JP 11811488 U JP11811488 U JP 11811488U JP H0238731 U JPH0238731 U JP H0238731U
Authority
JP
Japan
Prior art keywords
core tube
furnace core
furnace
central portion
protective film
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
Application number
JP11811488U
Other languages
English (en)
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 filed Critical
Priority to JP11811488U priority Critical patent/JPH0238731U/ja
Publication of JPH0238731U publication Critical patent/JPH0238731U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Crystals, And After-Treatments Of Crystals (AREA)

Description

【図面の簡単な説明】
第1図は本考案の炉芯管の一実施例の縦断面図
、第2図は本考案の炉芯管の他の実施例の縦断面
図、第3図は本考案の一実施例、本考案の他の実
施例の炉芯管、従来の石英炉芯管および表面被覆
なしの炭化珪素炉芯管をそれぞれ使用して半導体
基板を酸化した場合の各炉芯管と半導体基板のラ
イフタイムとの関係図、第4図は従来の炉芯管の
縦断面図である。 11,21,41……炉芯管中心材、12,2
2……保護膜。

Claims (1)

    【実用新案登録請求の範囲】
  1. 半導体装置製造工程で複数の半導体基板を一括
    し表面処理または熱処理等を行なう拡散炉に用い
    る炉芯管において、前記炉芯管は炉芯管本体とな
    る第1の材質からなる中心部と、前記中心部表面
    を被覆するように形成された第2の材質からなる
    保護膜を有することを特徴とする炉芯管。
JP11811488U 1988-09-07 1988-09-07 Pending JPH0238731U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11811488U JPH0238731U (ja) 1988-09-07 1988-09-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11811488U JPH0238731U (ja) 1988-09-07 1988-09-07

Publications (1)

Publication Number Publication Date
JPH0238731U true JPH0238731U (ja) 1990-03-15

Family

ID=31362185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11811488U Pending JPH0238731U (ja) 1988-09-07 1988-09-07

Country Status (1)

Country Link
JP (1) JPH0238731U (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678117A (en) * 1979-11-30 1981-06-26 Toshiba Corp Furnace core tube
JPS5851508A (ja) * 1981-09-22 1983-03-26 Yamagata Nippon Denki Kk 半導体素子製造用治具
JPS6145853A (ja) * 1984-08-10 1986-03-05 Hitachi Ltd 紙葉類収納装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678117A (en) * 1979-11-30 1981-06-26 Toshiba Corp Furnace core tube
JPS5851508A (ja) * 1981-09-22 1983-03-26 Yamagata Nippon Denki Kk 半導体素子製造用治具
JPS6145853A (ja) * 1984-08-10 1986-03-05 Hitachi Ltd 紙葉類収納装置

Similar Documents

Publication Publication Date Title
JPH0238731U (ja)
JPH02133308U (ja)
JPS6188233U (ja)
JPS6287339U (ja)
JPS6450050U (ja)
JPS6333624U (ja)
JPH01167034U (ja)
JPS62151737U (ja)
JPS63121426U (ja)
JPH0288233U (ja)
JPH01125531U (ja)
JPS6379632U (ja)
JPS5979803U (ja) 光フアイバ心線
JPS6365259U (ja)
JPS62151736U (ja)
JPS6172850U (ja)
JPH0330425U (ja)
JPH01131116U (ja)
JPS63137933U (ja)
JPS62166638U (ja)
JPH03110832U (ja)
JPH0221731U (ja)
JPS58177940U (ja) 半導体拡散炉用石英ガラス管
JPS6287338U (ja)
JPH0260249U (ja)