Processing

Please wait...

Settings

Settings

1. WO1996003239 - METHOD OF PREPARING POWDERS FOR HARD MATERIALS FROM APT AND SOLUBLE COBALT SALTS

Publication Number WO/1996/003239
Publication Date 08.02.1996
International Application No. PCT/SE1995/000872
International Filing Date 18.07.1995
Chapter 2 Demand Filed 16.02.1996
IPC
B22F 9/22 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
9Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
16using chemical processes
18with reduction of metal compounds
20starting from solid metal compounds
22using gaseous reductors
C22C 1/04 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making non-ferrous alloys
04by powder metallurgy
CPC
B22F 9/22
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
9Making metallic powder or suspensions thereof
16using chemical processes
18with reduction of metal compounds
20starting from solid metal compounds
22using gaseous reductors
C22C 1/045
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making alloys
04by powder metallurgy
045Alloys based on refractory metals
Applicants
  • SANDVIK AB [SE/SE]; S-811 81 Sandviken, SE
Inventors
  • WAHLBERG, Sverker; SE
  • MUHAMMED, Mamoun; SE
  • GRENTHE, Ingmar; SE
Agents
  • ÖSTLUND, Alf ; Sandvik AB Patent Dept. S-811 81 Sandviken, SE
Priority Data
9402548-321.07.1994SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF PREPARING POWDERS FOR HARD MATERIALS FROM APT AND SOLUBLE COBALT SALTS
(FR) PROCEDE DE PREPARATION DE POUDRES POUR MATERIAUX DURS A PARTIR DE PTA ET DE SELS DE COBALT SOLUBLES
Abstract
(EN)
According to the present invention there is now provided a method for preparing a powder containing W and Co and/or Ni characterised in reacting APT and a soluble salt of Co (Ni) in water at temperatures from room temperature to the boiling point of the solution keeping the solution pH at a constant level during the chemical reactions. The powder is filtered off, dried and reduced to a metallic powder which may be further carburized to form a powder containg WC and Co and/or Ni.
(FR)
Cette invention se rapporte à un procédé pour préparer une poudre contenant W et Co et/ou Ni, ce procédé consistant à faire réagir du PTA (paratungstate d'ammonium) et un sel soluble de Co (Ni) dans de l'eau à des températures comprises entre la température ambiante et le point d'ébullition de la solution, tout en maintenant le pH de cette solution à un niveau constant pendant les réactions chimiques. La poudre est ensuite filtrée, séchée et réduite en une poudre métallique, laquelle peut être ensuite carburée pour former une poudre contenant WC et Co et/ou Ni.
Also published as
Latest bibliographic data on file with the International Bureau