Maɗaukakin yumbu mai ƙarfi mai ƙarfi 3YSZ, ko abin da za mu iya kira tetragonal zirconia polycrystal (TZP), an yi shi da zirconium oxide wanda aka daidaita tare da 3% mol yttrium oxide.

Wadannan maki zirconia suna da mafi ƙanƙanta hatsi da mafi girman taurin a cikin zafin jiki tun da kusan dukkanin su ne tetragonal. Kuma ƙaramin girman hatsinsa (ƙananan micron) yana ba da damar cimma ƙwararrun ƙwararrun ƙwararrun ƙwararru da kuma kula da kaifi mai kaifi.

Ana amfani da zirconia akai-akai azaman mai daidaitawa tare da MgO, CaO, ko Yttria don haɓaka ƙarfin canji. Maimakon fitowar farko ta samar da tsarin kristal na tetragonal gaba ɗaya, wannan yana haifar da wani sashi mai siffar kristal wanda ke daidaitawa akan sanyaya. Tetragonal hazo suna samun canjin yanayi mai haifar da damuwa kusa da tsinkayar ci gaba akan tasiri. Wannan tsari yana sa tsarin ya faɗaɗa yayin da yake ɗaukar adadin kuzari mai yawa, wanda ke da alhakin tsananin taurin wannan abu. Har ila yau, yanayin zafi mai tsanani yana haifar da babban adadin gyare-gyare, wanda ke da mummunar tasiri a kan ƙarfin kuma yana haifar da fadada girman 3-7%. Ta hanyar ƙara abubuwan haɗin da aka ambata a baya, ana iya sarrafa adadin tetragonal don daidaita ma'auni tsakanin tauri da asarar ƙarfi.

A cikin zafin jiki, tetragonal zirconia ya daidaita tare da 3 mol% Y2O3 (Y-TZP) yana nuna mafi kyawun aiki dangane da tauri, ƙarfin lanƙwasawa. Hakanan yana nuna kaddarorin kamar haɓakar ionic, ƙarancin wutar lantarki, ƙarfin ƙarfi bayan canji, da tasirin tasirin ƙwaƙwalwar ajiya. Tetragonal zirconia yana ba da damar ƙirƙirar abubuwan yumbu tare da ƙwaƙƙwaran juriya na lalata, juriya mafi girma, da kyakkyawan ƙarewa.

Irin waɗannan fasalulluka suna ba da damar yin amfani da shi sosai a wurare kamar filin nazarin halittu don dashen hip da sake gina haƙori, da kuma a fagen nukiliya a matsayin shinge mai zafi a cikin sandar mai.