AU570562B2 - Alumina process for semiconductor memory cell package - Google Patents

Alumina process for semiconductor memory cell package

Info

Publication number
AU570562B2
AU570562B2 AU42984/85A AU4298485A AU570562B2 AU 570562 B2 AU570562 B2 AU 570562B2 AU 42984/85 A AU42984/85 A AU 42984/85A AU 4298485 A AU4298485 A AU 4298485A AU 570562 B2 AU570562 B2 AU 570562B2
Authority
AU
Australia
Prior art keywords
memory cell
semiconductor memory
cell package
alumina process
alumina
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.)
Ceased
Application number
AU42984/85A
Other languages
English (en)
Other versions
AU4298485A (en
Inventor
Koutaro Hirayanagi
Akira Sakamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Aluminum Industries KK
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 Showa Aluminum Industries KK filed Critical Showa Aluminum Industries KK
Publication of AU4298485A publication Critical patent/AU4298485A/en
Application granted granted Critical
Publication of AU570562B2 publication Critical patent/AU570562B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • C01F7/473—Removal of organic compounds, e.g. sodium oxalate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
    • H01L21/4803—Insulating or insulated parts, e.g. mountings, containers, diamond heatsinks
    • H01L21/4807—Ceramic parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/02—Containers; Seals
    • H01L23/06—Containers; Seals characterised by the material of the container or its electrical properties
    • H01L23/08—Containers; Seals characterised by the material of the container or its electrical properties the material being an electrical insulator, e.g. glass
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/44—Alpha, beta or gamma radiation related properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Inorganic Insulating Materials (AREA)
AU42984/85A 1984-05-19 1985-05-20 Alumina process for semiconductor memory cell package Ceased AU570562B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP59-99695 1984-05-19
JP59099695A JPS60246220A (ja) 1984-05-19 1984-05-19 α線放射量の低いアルミナ水和物またはアルミナの製造方法
CA000492910A CA1328728C (en) 1984-05-19 1985-10-11 Alumina adapted for use as semiconductor memory cell package and process for preparing the same

Publications (2)

Publication Number Publication Date
AU4298485A AU4298485A (en) 1985-12-13
AU570562B2 true AU570562B2 (en) 1988-03-17

Family

ID=25670808

Family Applications (1)

Application Number Title Priority Date Filing Date
AU42984/85A Ceased AU570562B2 (en) 1984-05-19 1985-05-20 Alumina process for semiconductor memory cell package

Country Status (5)

Country Link
JP (1) JPS60246220A (ja)
AU (1) AU570562B2 (ja)
CA (1) CA1328728C (ja)
DE (1) DE3590218T1 (ja)
WO (1) WO1985005349A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI518034B (zh) 2010-04-15 2016-01-21 新日鐵住金高新材料股份有限公司 用以製造球狀氧化鋁粉末之方法
CN111874927A (zh) * 2020-06-22 2020-11-03 河南华慧有色工程设计有限公司 一种碳分法氧化铝节能减排生产方法
CN115947361A (zh) * 2022-11-21 2023-04-11 江苏联瑞新材料股份有限公司 一种低放射性氧化铝粉及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745601A (en) * 1953-11-19 1956-02-29 Kaiser Aluminium Chem Corp Improvements in or relating to process for treating caustic aluminate liquor
US4038039A (en) * 1975-07-07 1977-07-26 Alcan Research And Development Limited Production of alumina
US4280987A (en) * 1978-07-11 1981-07-28 Showa Aluminum Industries K.K. Method for treatment of Bayer liquor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951488B2 (ja) * 1977-05-09 1984-12-14 昭和電工株式会社 有機物の除去方法
JPS53137869A (en) * 1977-05-09 1978-12-01 Showa Denko Kk Method of removing organic matters
JPS54110199A (en) * 1978-02-17 1979-08-29 Sumitomo Aluminium Smelting Co Method of removing organics from circulating aluminic acid alkali solution
CH644332A5 (de) * 1978-11-07 1984-07-31 Alusuisse Verfahren zur herstellung von grobem aluminiumhydroxid.
JPS573715A (en) * 1980-06-09 1982-01-09 Showa Alum Ind Kk Preparation of alumina having extremely low content of radioactive element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745601A (en) * 1953-11-19 1956-02-29 Kaiser Aluminium Chem Corp Improvements in or relating to process for treating caustic aluminate liquor
US4038039A (en) * 1975-07-07 1977-07-26 Alcan Research And Development Limited Production of alumina
US4280987A (en) * 1978-07-11 1981-07-28 Showa Aluminum Industries K.K. Method for treatment of Bayer liquor

Also Published As

Publication number Publication date
CA1328728C (en) 1994-04-26
DE3590218T1 (de) 1986-07-17
JPS60246220A (ja) 1985-12-05
WO1985005349A1 (fr) 1985-12-05
AU4298485A (en) 1985-12-13

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