GB727875A - Process of preparing iron powder of improved electromagnetic properties - Google Patents

Process of preparing iron powder of improved electromagnetic properties

Info

Publication number
GB727875A
GB727875A GB28801/53A GB2880153A GB727875A GB 727875 A GB727875 A GB 727875A GB 28801/53 A GB28801/53 A GB 28801/53A GB 2880153 A GB2880153 A GB 2880153A GB 727875 A GB727875 A GB 727875A
Authority
GB
United Kingdom
Prior art keywords
iron powder
electromagnetic properties
improved electromagnetic
preparing iron
improved
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.)
Expired
Application number
GB28801/53A
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.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
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 General Aniline and Film Corp filed Critical General Aniline and Film Corp
Publication of GB727875A publication Critical patent/GB727875A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment

Abstract

The electromagnetic properties of carbonyl iron powder are improved by heating pulverulent iron, obtained by the thermal decomposition of Fe(CO)5, at a temperature of 450-500 DEG C., preferably 500 DEG C., in NH3 gas for 4-10 hours, cooling with dry nitrogen gas and following with a ball-milling treatment. U.S.A. Specification 1,759,659 is referred to.
GB28801/53A 1952-12-03 1953-10-19 Process of preparing iron powder of improved electromagnetic properties Expired GB727875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US727875XA 1952-12-03 1952-12-03

Publications (1)

Publication Number Publication Date
GB727875A true GB727875A (en) 1955-04-06

Family

ID=22109753

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28801/53A Expired GB727875A (en) 1952-12-03 1953-10-19 Process of preparing iron powder of improved electromagnetic properties

Country Status (1)

Country Link
GB (1) GB727875A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111072072A (en) * 2018-10-18 2020-04-28 洛阳尖端技术研究院 Preparation method of wave-absorbing powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111072072A (en) * 2018-10-18 2020-04-28 洛阳尖端技术研究院 Preparation method of wave-absorbing powder

Similar Documents

Publication Publication Date Title
GB727875A (en) Process of preparing iron powder of improved electromagnetic properties
GB823266A (en) Production of boron nitride
GB684054A (en) Improvements in the manufacture of iron powder by the carbonyl process
GB675346A (en) Improvements in the production by the carbonyl process of iron powder for powder-metallurgical purposes
GB985174A (en) Preparation of cermets
GB712467A (en) Improvements in the production of hydroxylamines
GB689489A (en) Improvements in the production of highly permeable magnetic powders
GB802251A (en) Improvements in high strength single crystals of iron
GB741943A (en) Improvements in the production of metal powders
GB757198A (en) Improvements in the production of metal powders
GB800975A (en) Production of modified carbon black
GB624252A (en) Improvements relating to the production of nickel coatings on ferrous articles
GB714520A (en) Improvements in metal powders for magnetic mass cores
GB658343A (en) Method of producing derivatives of ªÐ-amino-salicylic acid
GB785814A (en) Improvements in or relating to the production of articles from aluminium nitride
GB812235A (en) Improvements in rotating bands for projectiles and methods for making the same
GB729502A (en) Improvements in or relating to a process for the production of hydrogen cyanide
GB922955A (en) Prcoess for the manufacture of pulverized iron
GB647278A (en) Improvements in or relating to the production of sintered steel
GB756688A (en) Tuberculostatic agent and process for producing the same
GB598660A (en) Improvements in and relating to the production of iron powder
ES248015A1 (en) Process for the production of urea
GB742450A (en) Improvements in or relating to piperazine derivatives and process of preparing the same
GB558810A (en) Method of producing shaped objects from carbon-holding iron, nickel or cobalt
GB600828A (en) Improvements relating to processes of agglomeration applicable to ceramic materials or the like, and to products resulting therefrom