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Thoriumdisilicid

thorium disilicide Struktur
12067-54-8
CAS-Nr.
12067-54-8
Bezeichnung:
Thoriumdisilicid
Englisch Name:
thorium disilicide
Synonyma:
thorium disilicide;thorium(IV) silicide;Thorium silicide (ThSi2)
CBNumber:
CB7939466
Summenformel:
Si2Th
Molgewicht:
288.21
MOL-Datei:
Mol file

Thoriumdisilicid Eigenschaften

Schmelzpunkt:
1850°C
Dichte
7.900
Aggregatzustand
tetragonal crystals
Farbe
tetragonal crystals, crystalline
Crystal Structure
Tetragonal
Stabilit?t:
Corrosion resistant to molten Cu; corroded by molten Ni
EPA chemische Informationen
Thorium silicide (ThSi2) (12067-54-8)

Sicherheit

Thoriumdisilicid Chemische Eigenschaften,Einsatz,Produktion Methoden

Chemische Eigenschaften

black tetr; -80 mesh with 99.5% purity [CER91] [CRC10]
Grayish-white crystals with a metallic luster and good thermal and electrical conductivity, d (ThSi2) 7.63.

Vorbereitung Methode

Brauer and Mitius modified a method developed by Honigschmid and prepare ThSi3 by the following procedure. Intimate mixtures of Al, Th and Silumin (13% Si, 87% Al) powders are compressed into tablets 10 mm long and 5 mm thick, placed in alumina crucibles and fused at 1100°C in high vacuum. Slow cooling (from 1100°C to 800°C in four hours) produces good product crystals within the aluminium ingot. These are freed of excess Al by alternate treatments with dilute hydrochloric acid and potassium hydroxide (moderate heating), followed by washing with water and alcohol. Since most of the silicide particles form cohesive granules with the Si and SiO2 contaminants, the crystallites are pulverized in an agate mortar and separated from foreign matter (particularly SiO2, which cannot be removed by chemical means) by flotation with bromoform (d 2.9). The bromoform must be continuously renewed. Evaporation with hydrofluoric acid is not practical, since it destroys the silicide.

Thoriumdisilicid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Thoriumdisilicid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 2)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Shaanxi Didu New Materials Co. Ltd
+86-89586680 +86-13289823923
1026@dideu.com China 8670 58

  • thorium disilicide
  • thorium(IV) silicide
  • Thorium silicide (ThSi2)
  • 12067-54-8
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