WO2023062242 - A FERROMAGNETIC POWDER COMPOSITION AND A METHOD FOR OBTAINING THEREOF
National phase entry:
Publication Number
WO/2023/062242
Publication Date
20.04.2023
International Application No.
PCT/EP2022/078826
International Filing Date
17.10.2022
Title **
[English]
A FERROMAGNETIC POWDER COMPOSITION AND A METHOD FOR OBTAINING THEREOF
[French]
COMPOSITION DE POUDRE FERROMAGNÉTIQUE ET SON PROCÉDÉ D'OBTENTION
Applicants **
HÖGANÄS AB (PUBL)
Bruksgatan 35
26383 Höganäs, SE
Inventors
ZHOU, Ye
,
SKÅRMAN, Björn
,
JÖNSSON, Christian
,
BRASH, Benjamin
,
HELLSÉN, Ann-Cathrin
,
Priority Data
21202965.6
15.10.2021
EP
Application details
| Total Number of Claims/PCT | * |
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| Number of Drawings | * |
| Pages for Publication | * |
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| Pages of Specification | * |
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International Searching Authority |
EPO
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter II
* |
| * | |
| * | |
| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 2500 | |
| EPO | Filing, Examination | 16125 | |
| Japan | Filing | 590 | |
| South Korea | Filing | 574 | |
| USA | Filing, Examination | 8360 |
Total: 28149 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
, and the β/α molar ratio is in the interval from 0.5 to 4.1, wherein the first coating (12a) is in direct contact with a surface of the core particles (11) of the ferromagnetic powder, and wherein the silicate is present in the amount of ferromagnetic powder composition comprises 0.02 to 1.0 wt% of at least one silicate calculated based on the total weight of the ferromagnetic powder composition. There is further provided a method for coating the soft-magnetic iron-based core particles and manufacturing of parts. Particularly suitable coatings were observed when M was potassium (K).[French]
, et le rapport molaire β/α est dans l'intervalle de 0,5 à 4,1, le premier revêtement (12a) étant en contact direct avec une surface des particules de noyau (11) de la poudre ferromagnétique, et le silicate étant présent dans la quantité de composition de poudre ferromagnétique comprenant de 0,02 à 1,0 % en poids d'au moins un silicate calculé sur la base du poids total de la composition de poudre ferromagnétique. L'invention concerne en outre un procédé de revêtement des particules de noyau à base de fer faiblement magnétiques et la fabrication de pièces. Des revêtements particulièrement appropriés ont été observés lorsque M est le potassium (K).