JPS5717500A - Manufacture of silicon nitride whisker - Google Patents

Manufacture of silicon nitride whisker

Info

Publication number
JPS5717500A
JPS5717500A JP8861680A JP8861680A JPS5717500A JP S5717500 A JPS5717500 A JP S5717500A JP 8861680 A JP8861680 A JP 8861680A JP 8861680 A JP8861680 A JP 8861680A JP S5717500 A JPS5717500 A JP S5717500A
Authority
JP
Japan
Prior art keywords
granules
shirasu
silicon nitride
powder
nitride whisker
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
JP8861680A
Other languages
Japanese (ja)
Inventor
Yukio Isayama
Kazuo Kobayashi
Masaki Umebayashi
Hironori Hamazaki
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.)
IJICHI SHIYUKEIJIYOU KK
IJIJI SHUGEIZO CO Ltd
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
IJICHI SHIYUKEIJIYOU KK
IJIJI SHUGEIZO CO Ltd
Agency of Industrial Science and Technology
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 IJICHI SHIYUKEIJIYOU KK, IJIJI SHUGEIZO CO Ltd, Agency of Industrial Science and Technology filed Critical IJICHI SHIYUKEIJIYOU KK
Priority to JP8861680A priority Critical patent/JPS5717500A/en
Publication of JPS5717500A publication Critical patent/JPS5717500A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain silicon nitride whisker by mixing powder of " Shirasu " (pumiceous sand) with silicon powder in a specified wt. ratio, granulating the mixture, heating the granules to a specified temp. in a flow of gaseous nitrogen in the presence of a CO feeding source, and collecting the resulting fibrous substance.
CONSTITUTION: Purified Shirasu powder freed of iron simply is mixed with silicon powder in an amount corresponding to 1W2mol per one mole SiO2 contained in the Shirasu. To the mixture are added a binder such as starch or polyvinyl alcohol which is used as a CO feeding source in the next heating process and water, and they are formed into granules having 0.5W2mm grain size. The granules are charged into the lower part of a vessel 3 made of graphite, and they are heated to 1,400W 1,800°C through a furnace core tube 1 and a uniformly heating pipe 2 while introducing gaseous nitrogen from a pipe 5. The binder is decomposed to generate CO, and white fibrous silicon nitride whisker is formed on the upper ceiling and side wall of the vessel 3.
COPYRIGHT: (C)1982,JPO&Japio
JP8861680A 1980-06-30 1980-06-30 Manufacture of silicon nitride whisker Pending JPS5717500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8861680A JPS5717500A (en) 1980-06-30 1980-06-30 Manufacture of silicon nitride whisker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8861680A JPS5717500A (en) 1980-06-30 1980-06-30 Manufacture of silicon nitride whisker

Publications (1)

Publication Number Publication Date
JPS5717500A true JPS5717500A (en) 1982-01-29

Family

ID=13947732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8861680A Pending JPS5717500A (en) 1980-06-30 1980-06-30 Manufacture of silicon nitride whisker

Country Status (1)

Country Link
JP (1) JPS5717500A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009115455A (en) * 2007-11-01 2009-05-28 Kobe Steel Ltd Transportation-cum-storage container of radioactive material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009115455A (en) * 2007-11-01 2009-05-28 Kobe Steel Ltd Transportation-cum-storage container of radioactive material

Similar Documents

Publication Publication Date Title
FI882080A (en) FOERFARANDE OCH ANORDNING FOER ATT PRODUCERA KROPPAR, SPECIELLT BYGGELEMENT AV EFTERHAERDANDE MATERIAL.
JPS5751205A (en) Production of fine powder metal
JPS57149465A (en) Formation of accumulated film
JPS57156318A (en) Production of trichlorosilane
JPS5717499A (en) Manufacture of silicon nitride whisker
JPS5717500A (en) Manufacture of silicon nitride whisker
JPS5434106A (en) Liquid feeding device
JPS5246398A (en) Method for continuous production of beta-sic
JPS57111300A (en) Preparation of ceramic whisker
JPS57188413A (en) Manufacture of heat freed quick lime
JPS56100920A (en) Improvement of water content poorsoil
JPS5625934A (en) Uniform mixing and storaging method of dust comprising primarily blast furnace dust and steel making furnace dust
JPS5439314A (en) Method of manufacturing highly pure silicon iron
JPS5229641A (en) Cooling system for ceiling of electric furnace by spiral pipe, or pipi ng group, or by water tank
JPS528663A (en) Treatment of waste water used for dust collection from waste gas
JPS5692109A (en) Manufacture of alpha-type silicon nitride powder
JPS55142531A (en) Denitrification apparatus
SU808410A1 (en) Method of melt processing to porous construction material
JPS573710A (en) Amophous silicon and its production
JPS53149933A (en) Preparation of methyl hydrogen polysilane
JPS5677045A (en) Technique of recycling casting waste sand containing alkali seed to neutral resource through hot air treatment
JPS539385A (en) Continuous reactor with immobilized enzyme
JPS573711A (en) Production of trichlorosilane
JPS5296997A (en) Granulation of gypsum from flue gas desulfurization
JPS5311106A (en) Structure of blast furnace bottom part