Premium
Combustion Synthesis of Metal Chromite Powders
Author(s) -
Manoharan S. Sundar,
Patil Kashinath C.
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04177.x
Subject(s) - chromite , chromium , combustion , metal , stoichiometry , aqueous solution , materials science , yield (engineering) , metallurgy , nitrate , inorganic chemistry , chemistry , nuclear chemistry , mineralogy , organic chemistry
Fine‐particle metal chromites (MCr 2 O 4 , where M = Mg, Ca, Mn, Fe, Co, Ni, Cu, and Zn) have been prepared by the combustion of aqueous solutions containing the respective metal nitrate, chromium(III) nitrate, and urea in stoichiometric amounts. The mixtures, when rapidly heated to 350°C, ignite and yield voluminous chromites with surface areas ranging from 5 to 25 m 2 /g. MgCr 2 O 4 , sintered in air at 1500°C for 5 h, has a density of 4.0 g/cm 3 .