High-Temperature Thermal Conductivity Measurements of Ceramic Powders

Not Available It is proposed to develop an advanced field apparatus for measuring the thermal conductivity of ceramic powders over the range of temperatures from room temperature to 1500 to 2500 K, depending upon the particular material and its compatibility with other materials. The apparatus will have the capability to carry out fully automated thermal conductivity measurements, by transient or steady-state means, under controlled gaseous environments and will be equipped with associated software to compute the thermal conductivity of the ceramic particle material from the data taken on powders. The specific objectives of the Phase 2 effort are: finalize the design of the prototype field apparatus for determination of the thermal conductivity of ceramic powders of mixtures, including construction drawings and selection of all instrumentation; develop software for experimental control, data acquisition, and data analysis for the prototype field thermal conductivity apparatus; further review available correlations and models relating the thermal conductivity of powders and mixtures to the properties of their constituents, and write appropriate software for use with the prototype field thermal conductivity apparatus; and build and test the prototype field thermal conductivity apparatus.