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Effect of the hydrolysis catalyst NH4OH on the preparation of calcia stabilized zirconia with sugar as a masking agent at low temperatures
Septawendar R.a, Purwasasmita B.S.b, Sutardi S.a
a Department of Advanced Ceramics, Glass, and Enamel, Center for Ceramics, Ministry of Industry of Indonesia, Indonesia
b Laboratory of Material Processing, Engineering Physics Department, Institute of Technology Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Nanoparticles of calcia-stabilized zirconia were prepared from zirconium salt of ZrOCl2·8H2O and 17 weight % CaO stabilizer with ammonia as a catalyst and sugar as a masking compound at a low temperature of 500°C. In the preparation process of nanoparticles of calcia-stabilized zirconia, calcination was conducted at temperatures of 500°-800°C. The calcined powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Nanoparticles calcia-stabilized zirconia were obtained at 500°C, where the phases formed were the cubic and the tetragonal phases of zirconia. Using 25% ammonia solution as a catalyst stabilized the tetragonal phase of zirconia in the sample at 500°-700°C. The addition of sugar on the preparation produced particles of calcia-stabilized zirconia below 20 nm in diameter after heating at 500°C, as shown by TEM. A further phase transformation of the calcia-stabilized zirconia was obtained at 800°C, where the phase formed was cubic zirconia. The SEM results show that the average grain sizes of the calcia-stabilized zirconia powder were below 250 nm.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Ammonia solution,Average grain size,Calcia-stabilized zirconias,Low temperatures,Preparation process,Tetragonal phase,Tetragonal phasis,Transmission electron microscopy (TEM)[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Ammonia,Calcia-stabilized zirconia,Calcination,Nanoparticles,Phase transformation,Sugar[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]