Aluminum titanate porous (TIALIT‑G)

Aluminium titanate (Tialit) is a highly versa­tile and advanced mate­r­ial used in the ceram­ics and foundry indus­tries as well as in mechan­i­cal and plant engi­neer­ing. This is due to its unique prop­er­ties that distin­guish it from other mate­ri­als.

One of the most impor­tant char­ac­ter­is­tics of aluminium titanate (Tialit) is its ther­mal shock resis­tance. This means that large temper­a­ture changes do not pose a prob­lem for compo­nents made from this mate­r­ial, as it remains very stable and durable.

Another advan­tage of aluminium titanate (Tialit) is its low wetta­bil­ity by liquid aluminium and its excel­lent ther­mal insu­la­tion prop­er­ties. These features make it an ideal mate­r­ial for foundry appli­ca­tions such as crucibles or nozzles.

In mechan­i­cal and plant engi­neer­ing, aluminium titanate (Tialit) also impresses with remark­able prop­er­ties. Partic­u­larly bene­fi­cial is its high resid­ual poros­ity combined with fine micro­c­racks caused by the anisotropic ther­mal expan­sion of the ATI crys­tals. Since these crys­tals exhibit differ­ent ther­mal expan­sion coef­fi­cients along their three main axes, micro­scopic stresses develop during cool­ing. These stresses lead to the forma­tion of finely distrib­uted micro­c­racks, which provide the mate­r­ial with excep­tional ther­mal shock resis­tance and mechan­i­cal strength – ideal prereq­ui­sites for demand­ing tech­ni­cal appli­ca­tions.

Aluminium titanate (Tialit) behaves very stably during temper­a­ture changes and exhibits very low ther­mal expan­sion. This is because the indi­vid­ual crys­tals expand differ­ently in vari­ous direc­tions (known as ther­mal expan­sion anisotropy). When heated, inter­nal stresses initially spread into the small micro­c­racks, prevent­ing signif­i­cant defor­ma­tion and main­tain­ing the material’s over­all stabil­ity.