12017-68-4

Basic information

• Product Name: Samarium cobalt
• Synonyms: SAMARIUM COBALT POWDER (1:5);cobalt,compd.withsamarium(5:1);cobalt, compound with samarium (5:1);SAMARIUM COBALT POWDER, -30 MESH;SAMARIUM COBALT, REACTON, SM 33%;powder30mesh;Cobalt-samarium;Samarium cobalt
• CAS NO: 12017-68-4
• Molecular Formula: CoSm
• Molecular Weight: 209.29
• EINECS: 234-625-7
• Mol File: 12017-68-4.mol
• Article Data: 3

Chemical Properties

• Melting Point: ~1325°
• Appearance: /powder
• Density: 8.60
• Sensitive: Air & Moisture Sensitive
• CAS DataBase Reference: Samarium cobalt(CAS DataBase Reference)
• NIST Chemistry Reference: Samarium cobalt(12017-68-4)
• EPA Substance Registry System: Samarium cobalt(12017-68-4)

Safety Data

• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-37/39
• WGK Germany: 3
• TSCA: Yes
• HazardClass: 4.1
• Hazardous Substances Data: 12017-68-4(Hazardous Substances Data)

Usage

General Description

Samarium cobalt is a type of rare earth permanent magnet material that combines samarium (Sm) and cobalt (Co). It has a high resistance to demagnetization and can maintain its magnetism at high temperatures, making it suitable for use in applications requiring strong and stable magnetic properties. Samarium cobalt magnets also have a high coercivity, meaning they are difficult to demagnetize. This, coupled with their high energy product, makes them ideal for use in various industries and applications, including aerospace, automotive, and electronic devices. Additionally, samarium cobalt magnets are known for their resistance to corrosion, making them a durable and long-lasting option for many different uses.

InChI:InChI=1/Co.Sm/q+2;+3

Upstream product

• 7440-19-9 samarium 
• 7440-48-4 cobalt 
• 10361-82-7 samarium(III) chloride 

Relevant articles and documents

Electrodeposition of Sm-Co nanoparticles from aqueous solutions

Supported Sm-Co nanoparticles have been synthesized by short pulse electrodeposition using aqueous solutions containing glycine as complexant and buffering agent. Nanoparticle composition is a function of pulse amplitude and pulse duration. Short pulses in particular minimize oxygen incorporation, down to 3 at%. X-ray photoelectron spectroscopy and X-ray diffraction data support the hypothesis that metallic alloys have indeed been obtained by this technique, along with mixed oxides of the metals. In-plane coercivities of up to 5.3 kOe have been achieved in as-plated nanoparticle assemblies when the relative Sm content was about 20 at% and particle size around 80 nm. These Sm-Co nanoparticles hold the promise to be a practical and inexpensive material for use in the synthesis of permanent magnets by powder processing.

Ternary system Sm-Co-Zr isoplethic section at Co = 89 at.%

A knowledge of solid-liquid equilibria is necessary to optimise sintering temperature in industrial Sm2Co17-type magnets. A single-phase state is reported as precursor of the cellular microstructure of the Sm2Co17 permanent magnets. The formation of this phase at high temperature seems for a large part to be governed by Zr addition. In order to understand the behaviour of 2:17-type magnets, phase relationships have been investigated in the Co-rich field of the Sm-Co-Zr system. The 1150°C isothermal section has been reinvestigated. A two-phase region was observed involving hexagonal and rhombohedral Sm2Co17. An isoplethic section has been drawn for temperatures between 1150°C and the melting points of the alloy with Co = 89 at.%, (Sm + Zr) = 11 at.%. Two four-phase equilibria have been observed. A tentative polythermal representation of the Sm-Co-Zr system in the Co-rich field has been drawn.