The results showed that HIP
treatment obviously improves the relative density, hardness, transverse rupture strength (TRS), and resistivity of AZO ceramics. AZO ceramics with relative densities of higher than 99.9% can be obtained after HIP at 1000 C or 1250 C. After HIP at 1250 C, the resistivities of AZO ceramics are reduced from
6.0 102 ± 1.1 102 U cm to 6.4 104 ± 2.9 104 U cm.