JPS5741336A - Manufacture of thorium-tungsten - Google Patents

Manufacture of thorium-tungsten

Info

Publication number
JPS5741336A
JPS5741336A JP11707180A JP11707180A JPS5741336A JP S5741336 A JPS5741336 A JP S5741336A JP 11707180 A JP11707180 A JP 11707180A JP 11707180 A JP11707180 A JP 11707180A JP S5741336 A JPS5741336 A JP S5741336A
Authority
JP
Japan
Prior art keywords
powder
tungsten
thorium
sodium nitrate
tungsten oxide
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.)
Granted
Application number
JP11707180A
Other languages
Japanese (ja)
Other versions
JPH0118136B2 (en
Inventor
Yoshio Degawa
Shigeo Shimomura
Hiroshi Takakura
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11707180A priority Critical patent/JPS5741336A/en
Publication of JPS5741336A publication Critical patent/JPS5741336A/en
Publication of JPH0118136B2 publication Critical patent/JPH0118136B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: To enhance the dispersibility of ThO2 and to easily obtain a recrystallized structure by adding an aqueous soln. of sodium nitrate to tungsten oxide powder in a specified ratio, drying them in the air at ≤100°C, reducing the powder in a hydrogen atmosphere at a specified temp. for a secified time, and manufacturing thorium-tungsten by a known method using the resulting powder as a material.
CONSTITUTION: To tungsten oxide powder is added an aqueous soln. of sodium nitrate by 0.2W5%, and they are dried in the air at ≤100°C. This powder is reduced in a hydrogen atmosphere at 700W900°C for 30W60min to decompose sodium nitrate as well as to reduce tungsten oxide. Thorium-tungsten is then manufactured by carrying out known processes such as formation of an ingot using the resulting fine powder as a material, heating to a high temp. by electrifying, forging and wire drawing in succession.
COPYRIGHT: (C)1982,JPO&Japio
JP11707180A 1980-08-27 1980-08-27 Manufacture of thorium-tungsten Granted JPS5741336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11707180A JPS5741336A (en) 1980-08-27 1980-08-27 Manufacture of thorium-tungsten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11707180A JPS5741336A (en) 1980-08-27 1980-08-27 Manufacture of thorium-tungsten

Publications (2)

Publication Number Publication Date
JPS5741336A true JPS5741336A (en) 1982-03-08
JPH0118136B2 JPH0118136B2 (en) 1989-04-04

Family

ID=14702689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11707180A Granted JPS5741336A (en) 1980-08-27 1980-08-27 Manufacture of thorium-tungsten

Country Status (1)

Country Link
JP (1) JPS5741336A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61288044A (en) * 1985-04-01 1986-12-18 シヤンハイ　ランプ　フアクトリイ Tungsten electrode material containing cerium and its production
JPH01502680A (en) * 1987-01-28 1989-09-14 メタルウエルク、プランゼー、ゲゼルシヤフト、ミツト、ベシユレンクテル、ハフツング Creep-resistant alloy made of high-melting point metal and its manufacturing method
CN109014235A (en) * 2018-10-25 2018-12-18 株洲硬质合金集团有限公司 A kind of preparation method of middle particle tungsten powder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61288044A (en) * 1985-04-01 1986-12-18 シヤンハイ　ランプ　フアクトリイ Tungsten electrode material containing cerium and its production
JPH01502680A (en) * 1987-01-28 1989-09-14 メタルウエルク、プランゼー、ゲゼルシヤフト、ミツト、ベシユレンクテル、ハフツング Creep-resistant alloy made of high-melting point metal and its manufacturing method
CN109014235A (en) * 2018-10-25 2018-12-18 株洲硬质合金集团有限公司 A kind of preparation method of middle particle tungsten powder

Also Published As

Publication number Publication date
JPH0118136B2 (en) 1989-04-04

Similar Documents

Publication Publication Date Title
JPS5741336A (en) Manufacture of thorium-tungsten
JPS5210819A (en) Malleable high permeability alloy for high frequency
JPS5342107A (en) Production of sintered dies
JPS5211525A (en) Method of manufacturing headrests
JPS57179035A (en) Compound having hexagonal system laminar structure represented by tmfecuo4 and its manufacture
JPS529414A (en) Production method of magnetic head
JPH0543761B2 (en)
JPS51117103A (en) Alloy wire material for addition of rare earth
JPS5247396A (en) Chemical compound super-conduction wire
JPS5288211A (en) Method and equipment for continuous treatment of magnetic material
JPS53130057A (en) Inlay pattern body and forming method of the same
JPS5317520A (en) Straightening method of semi-hard magnetic wire material
JPS57179029A (en) Compound having hexagonal system laminar structure represented by ybfecuo4 and its manufacture
JPS5225000A (en) Method for production of feb powder
JPS5379295A (en) Method for manufacturing magnetic material sintered with silicon and iron
JPS5269280A (en) Production of semiconductor non-volatile method
JPS5480202A (en) Low nox sintering method
JPS5365206A (en) Preparation of porous metal
JPS52105772A (en) Manufacture for multi-dimensional semiconductor raw material
JPS51132497A (en) Manufacture method of conductive and anticorrosive multiple metal bar
JPS5223517A (en) Wire for weld wire mesh
JPS5224997A (en) Method for rust proofing of expansive graphite
JPS57179031A (en) Compound having hexagonal system laminar structure represented by ybfemgo4 and its manufacture
JPS5422000A (en) Process for producing alpha-type silicon nitride
JPS5594730A (en) Manufacture of composite metallic wire