Calciumtitanat

Kristallstruktur
Kristallstruktur von Calciumtitanat
_ Ca2+ 0 _ Ti4+ 0 _ O2−
Allgemeines
Name Calciumtitanat
Andere Namen
  • Calciumtitanoxid (Perowskit)
  • CALCIUM TITANATE (INCI)[1]
Verhältnisformel CaTiO3
Externe Identifikatoren/Datenbanken
CAS-Nummer 12049-50-2
EG-Nummer 234-988-1
ECHA-InfoCard 100.031.795
PubChem 16212381
Wikidata Q4346070
Eigenschaften
Molare Masse 135,94 g·mol−1
Aggregatzustand

fest[2]

Dichte

4,1 g·cm−3 (25 °C)[2]

Schmelzpunkt

1975 °C[3]

Sicherheitshinweise
GHS-Gefahrstoffkennzeichnung[2]
keine GHS-Piktogramme

H- und P-Sätze H: keine H-Sätze
P: keine P-Sätze[2]
Toxikologische Daten

>12 g·kg−1 (LD50Ratteoral)[2]

Soweit möglich und gebräuchlich, werden SI-Einheiten verwendet.
Wenn nicht anders vermerkt, gelten die angegebenen Daten bei Standardbedingungen (0 °C, 1000 hPa).

Calciumtitanat ist eine anorganische chemische Verbindung des Calciums aus der Gruppe der Titanate.

Vorkommen

Calciumtitanat kommt natürlich in Form des Minerals Perowskit vor.

Gewinnung und Darstellung

Calciumtitanat kann durch Reaktion von Calciumoxid mit Titan(IV)-oxid bei 1350 °C gewonnen werden.[4]

Eigenschaften

Calciumtitanat ist ein Feststoff.[2] Er kristallisiert monoklin-pseudokubisch.[5]

Verwendung

Calciumtitanat wird als Dielektrikum in Keramikkondensatoren[6] (auch als Mischkeramik mit Bariumtitanat[7]) und als Beschichtungsmaterial für Implantate verwendet.[8]

Einzelnachweise

  1. Eintrag zu CALCIUM TITANATE in der CosIng-Datenbank der EU-Kommission, abgerufen am 18. Januar 2022.
  2. a b c d e f Datenblatt Calcium titanate, nanopowder, <100 nm particle size (BET), 99% trace metals basis bei Sigma-Aldrich, abgerufen am 6. Dezember 2015 (PDF).
  3. Datenblatt Calcium titanium oxide, 99+% (metals basis) bei Alfa Aesar, abgerufen am 6. Dezember 2015 (Seite nicht mehr abrufbar).
  4. Dale L. Perry: Handbook of Inorganic Compounds, Second Edition. CRC Press, 2011, ISBN 978-1-4398-1462-8, S. 99 (eingeschränkte Vorschau in der Google-Buchsuche).
  5. Alfred Hecht: Elektrokeramik Werkstoffe, Herstellung, Prüfung, Anwendungen. Springer-Verlag, 2013, ISBN 978-3-642-52724-1, S. 17 (eingeschränkte Vorschau in der Google-Buchsuche).
  6. Siegfried Behrendt, Ralf Pfitzner, Rolf Kreibich, Kurt Hornschild: Innovationen zur Nachhaltigkeit Ökologische Aspekte der Informations- und Kommunikationstechniken. Springer-Verlag, 2013, ISBN 978-3-642-58892-1, S. 296 (eingeschränkte Vorschau in der Google-Buchsuche).
  7. Hubert Gräfen, VDI-Gesellschaft Werkstofftechnik: Lexikon Werkstofftechnik Berichtigter Nachdruck. Springer-Verlag, 2013, ISBN 978-3-642-51732-7, S. 293 (eingeschränkte Vorschau in der Google-Buchsuche).
  8. Anke Bernstein, Georg Berger, Jörg Brandt, Ralph Wenkel, Nate Gildenhaar, Thorsten Zielezinski, Doreen Nöbel: Calciumtitanat (Ca4Ti3O10)– ein neues Material für Implantatbeschichtungen. In: BIOmaterialien. 5, 2004, doi:10.1515/BIOMAT.2004.5.4.242.

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