Doubly　substituted　polycrystalline　compound　bulk　samples　of　BaxAgyCa2.8Co4O9　were　prepared　via　citrate　acid　sol-gel　method　followed　by　spark　plasma　sintering.　The　phase　composition,　orientation,　texture　and　high　temperature　electrical　properties　were　systematically　investigated.　The　results　showed　that　the　orientation　and　the　texture　could　be　modified　by　altering　ratio　of　Ba　to　Ag.　The　resistivity　and　the　Seebeck　coefficient　of　substituted　samples　were　decreased　by　decreasing　Ba/Ag　ratio　except　for　that　of　Ba0.1Ag0.1Ca2.8Co4O9　sample　with　lowest　electrical　resistivity　(7.2　m　Omega　cm　at　973　K),　moderately　high　Seebeck　coefficient　(172　mu　V/K　at　973　K)　and　improved　power　factor　(0.42　mW/mK(2)　at　973　K).　(C)　2009　Elsevier　B.V.　All　rights　reserved.