To Review the Sintering Methods and the Effects towards Yttria-Stabilized Tetragonal Zirconia Polycrystal (Y-Tzp)

Abstract

Yttria-StabilizedTetragonalZirconiaPolycrystal, also been known as Y-TZP hadinvolved in a wide range of application in the industrytodaywhichincluded dental restoration, orthopedic implant, solid oxide fuel cell (SOFC), thermal coatingbarrier, cuttingtools and sensor due to the attractive mechanicalproperties and biocompatibility. To produce Y-TZP frompowder to solid state generallywillbecarried out from cold pressing, cold isostatic pressing (CIP) and sintering. Sintering can beconsidered as one of the mostcriticalprocedure to obtain a good quality of Y-TZP because the procedurewillinduce the mechanisms like densification and grain size growth. Thesetwomechanisms are directly influence the mechanicalproperties of Y-TZP. Manyresearcheshadshownthatdifferent of sinteringmethods can resultdifferentlevel of densification and grain size growthundervarioustemperature, holding time and sintering rate. Thus far, the sintering techniques been commonlyadoptedincludedConventionalSintering (CS), MicrowaveSintering (MS), Spark Plasma Sintering (SPS) and Two-Steps-Sintering (TSS). The objective of thispaperis to review the mentionedsinteringmethods and the effectstowards Y-TZP in term of densification and grain size growth.