Zirconia porous (ZR-95-VG)

Porous Zirco­nia – a High-Perfor­mance Mate­r­ial with Unique Prop­er­ties Porous zirco­nia (ZrO₂) belongs to the family of advanced tech­ni­cal ceram­ics and is a true all-rounder for demand­ing appli­ca­tions in labo­ra­to­ries, indus­try, and research. While chem­i­cally iden­ti­cal to its dense coun­ter­part, its open-pore microstruc­ture offers several distinct advan­tages, espe­cially under ther­mal and mechan­i­cal stress. One of the key char­ac­ter­is­tics of porous zirco­nia is its good ther­mal shock resis­tance. In high-temper­a­ture envi­ron­ments – such as during rapid heat­ing and cool­ing – inter­nal stresses can develop in the mate­r­ial, often lead­ing to cracks in dense ceram­ics. The porous struc­ture acts as an inter­nal buffer, absorb­ing and evenly distrib­ut­ing these stresses, thereby signif­i­cantly reduc­ing the risk of crack­ing. This makes porous zirco­nia ceram­ics ideal for cyclic ther­mal appli­ca­tions, such as in high-temper­a­ture furnaces, labo­ra­tory equip­ment, or precious metal cast­ing.

In labo­ra­tory use, partic­u­larly when melt­ing precious metals, proper handling is essen­tial to ensure the longevity of zirco­nia crucibles. We recom­mend using porous zirco­nia crucibles in combi­na­tion with high-grade alumina crucibles (qual­ity KR-98-VG), embed­ding them care­fully with a suit­able invest­ment compound. This approach protects the more sensi­tive porous struc­ture from mechan­i­cal stress while ensur­ing uniform temper­a­ture distri­b­u­tion. The result: signif­i­cantly longer service life and improved process reli­a­bil­ity.

With decades of expe­ri­ence in the devel­op­ment and produc­tion of tech­ni­cal ceram­ics, GTS Keramik is your reli­able part­ner for compo­nents made of porous zirco­nia. Whether crucibles, tubes, plates, or custom parts – we offer both stan­dard prod­ucts and tailored solu­tions accord­ing to your spec­i­fi­ca­tions. From mate­r­ial selec­tion and design consul­ta­tion to manu­fac­tur­ing, we support you with speed, compe­tence, and qual­ity. Rely on high-perfor­mance ceramic solu­tions “Made in Germany” when dura­bil­ity, preci­sion, and reli­a­bil­ity matter. GTS Keramik – High-Perfor­mance Ceram­ics with Respon­si­bil­ity and Passion.