Sinterable pulverulent raw material based on aluminum titanate, a process for its preparation and the sintered bodies produced therefrom and their use

US5055434A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Thometzek · Bensberg, DE
• Bernard Freudenberg · Coburg, DE

Key dates

• Filing date: Aug 3, 1989
• Grant date: Oct 8, 1991
• Expiry date: Aug 3, 2009

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05C2201/021
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Sinterable raw material product for ceramics based on aluminum titanate, consisting essentially of particles having a core/shell structure with a core of an oxide, oxide hydrate or hydroxide of ether of aluminum or titanium on which are precipitated, as a shell, sparingly soluble compounds of the other aluminum or titanium not used as the core matrial, with the molar ratio of titanium to aluminum of from 1:0.1 to 1:30, which in addition to the precipitated compounds of aluminum or titanium contains additional sparingly soluble compounds of elements in a quantity of from 0.1 to 65% by weight, calculated as oxide of the element and based on the total quantity are useful in fabricating sintered bodies for high temperature environments which include internal combustion engine parts, tubes for transporting liquid metals, catalysts carriers and so forth.