Guna meningkatkan nilai ekonomi dari konsentrat zirkon lokal dari Pulau Bangka, <em>Cermet</em> Ni-YSZ disintesis dari zirkonia yang sebelumnya telah disintesis dari konsentrat zirkon lokal. <em>Cermet</em> Ni-YSZ disintesis dengan menggunakan metode <em>solid state reaction</em>. Analisis XRD yang dilengkapi dengan <em>refinement Le Bail</em> telah dilakukan untuk menganalisis struktur kristal dan parameter sel dari material. YSZ dipreparasi dengan melakukan doping 8% mol <em>yttrium oxide</em> kedalam zirkonia dan kemudian disinter pada suhu 1250 <sup>o</sup>C selama 3 jam. ada penambahan doping 8% mol yttria memungkikan transfomasi fasa dari zirkonia dari tetragonal menjadi struktur kubik. Sementara itu, cermet Ni-YSZ memiliki fasa kristalin, Ni dengan struktur kubik dan YSZ dengan struktur kubik. analisis sem dari material-material tesebut menunjukan bahwa adanya penambahan Ni kedalam YSZ memungkinan morfologi menjadi lebih kasar dengan ukuran butir besar yang disebabkan adanya agglomerasi Ni terhadap YSZ. cermet Ni-YSZ memiliki konduktivitas tertinggi pada komposisi Ni:YSZ 20:80.
<p>This research synthesized a cermet Ni-YSZ, in which the YSZ (yttria stabilized-zirconia) was synthesized from the local zircon sand, ZrSiO<sub>4</sub>, as a side product of tin mining plant in Bangka island, Indonesia. The synthesized YSZ in this research is zirconia, ZrO<sub>2</sub> doped by 8 % mol of yttrium dioxide. The synthesis used solid state reaction method and the result was characterized its crystal structure and its cell parameters by XRD analysis equipped with Le Bail refinement, surface morphology analysis, and an impedance analysis to understand its ionic conductivity. The cermet Ni-YSZ was synthesized at a various composition of Ni:YSZ i.e., 20:80, 30:70, and 40:60 (b/b). The analysis shows that Ni-YSZ is in two phases of Ni and YSZ without any presence of a third phase. It indicates that there was no solid state reaction between Ni and YSZ during synthesis. In this Ni-YSZ cermet, the Ni phase in a cubic structure, and the YSZ is also in a cubic structure. Morphological study shows that the addition of Ni to YSZ allows the morphology to become more roughness with larger grain size. This research found that the Ni-YSZ 20:80 has highest ionic conductivity.</p>
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