TY - GEN
T1 - Preparation of blue ceramic pigments by reaction bonding
AU - Rocha-Rangel, Enrique
AU - Villanueva-Baltazar, Imelda
AU - Téllez-Jurado, Lucia
AU - Refugio-Garcia, Elizabeth
PY - 2010
Y1 - 2010
N2 - Synthesis of CoAl2O4 based blue ceramic pigments following the reaction bonding process was studied. An intense mechanical powder mixture of metallic cobalt and Al2O3 was prepared. The resulting powders from the milling period were heat treated in air in order to oxide; first the metallic cobalt with the oxygen present in the furnace atmosphere, and then, attain CoAl2O4 blue powders by a solid reaction between fresh CoO and initial Al2O3. The evolution of solid reactions was follows by TG, XRD, FT IR and UV Vis analysis. The obtained results from TG analysis indicate that Co oxidation starts at 200 °C and finishes at 700 °C. XRD patterns show that the formation of CoAl2O4 is completed at 850 °C. On the other hand, FT IR and UV Vis studies identify those different interactions between CoO and Al2O3 are taking place at temperatures in the region of 800 to 850 °C forming the CoAl2O4 spinel. Finally, the feature of obtained samples after solid reactions is of an intense blue color.
AB - Synthesis of CoAl2O4 based blue ceramic pigments following the reaction bonding process was studied. An intense mechanical powder mixture of metallic cobalt and Al2O3 was prepared. The resulting powders from the milling period were heat treated in air in order to oxide; first the metallic cobalt with the oxygen present in the furnace atmosphere, and then, attain CoAl2O4 blue powders by a solid reaction between fresh CoO and initial Al2O3. The evolution of solid reactions was follows by TG, XRD, FT IR and UV Vis analysis. The obtained results from TG analysis indicate that Co oxidation starts at 200 °C and finishes at 700 °C. XRD patterns show that the formation of CoAl2O4 is completed at 850 °C. On the other hand, FT IR and UV Vis studies identify those different interactions between CoO and Al2O3 are taking place at temperatures in the region of 800 to 850 °C forming the CoAl2O4 spinel. Finally, the feature of obtained samples after solid reactions is of an intense blue color.
UR - http://www.scopus.com/inward/record.url?scp=77955082411&partnerID=8YFLogxK
M3 - Contribución a la conferencia
SN - 9780470876466
T3 - Ceramic Transactions
SP - 207
EP - 213
BT - Innovative Processing and Manufacturing of Advanced Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology
T2 - Innovative Processing and Manufacturing of Advanced Ceramics and Composites - 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8
Y2 - 31 May 2009 through 5 June 2009
ER -