Ua ʻike nā mea noiʻi ma ke Kulanui ʻo Kyoto e hiki i nā silicides molybdenum ke hoʻomaikaʻi i ka maikaʻi o nā lau turbine i nā ʻōnaehana hoʻopau wela kiʻekiʻe.

ʻO nā turbine kinoea nā ʻenekini e hoʻohua ai i ka uila ma nā mea kanu mana. Hiki i nā mahana hana o kā lākou ʻōnaehana hoʻopau ke ʻoi aku ma mua o 1600 °C. Hoʻoheheʻe nā ʻōpala turbine nickel-based i hoʻohana ʻia i kēia mau ʻōnaehana ma nā mahana he 200 °C haʻahaʻa a no laila e pono ai ka hoʻoluʻu ea e hana. ʻO nā lau turbine i hana ʻia mai loko mai o nā mea me nā wela hoʻoheheʻe kiʻekiʻe e pono ai ka emi ʻana o ka wahie a alakaʻi i nā hoʻokuʻu CO2 haʻahaʻa.

Ua noiʻi nā kānaka ʻepekema waiwai ma ke Kulanui ʻo Kyoto o Iapana i nā waiwai o nā haku mele like ʻole o nā silicides molybdenum, me nā mea ʻē aʻe a me ka ʻole.

Ua hōʻike ʻia nā noiʻi mua i ka hana ʻana i ka molybdenum silicide-based composites ma ke kaomi ʻana a me ka hoʻomehana ʻana i kā lākou pauka - i ʻike ʻia ʻo ka pauka metallurgy - hoʻomaikaʻi i ko lākou kūʻē ʻana i ka haki ʻana i nā mahana ambient akā ua hoʻohaʻahaʻa i ko lākou ikaika wela kiʻekiʻe, ma muli o ka hoʻomohala ʻana o nā papa silicon dioxide i loko o ka mea.

Ua hana ka hui ʻo Kyoto University i kā lākou molybdenum silicide-based material me ka hoʻohana ʻana i ke ʻano i kapa ʻia ʻo "directional solidification," kahi e hoʻoheheʻe ʻia ai ka metala i hoʻoheheʻe ʻia ma kekahi ʻaoʻao.

Ua ʻike ka hui e hiki ke hana ʻia kahi mea homogeneous ma ka hoʻomalu ʻana i ka helu paʻa o ka molybdenum silicide-based composite i ka wā o ka hana ʻana a me ka hoʻoponopono ʻana i ka nui o ka mea ternary i hoʻohui ʻia i ka composite.

Hoʻomaka ka hoʻoheheʻe ʻana o ka mea i loaʻa i ka plastically ma lalo o ke kaomi uniaxial ma luna o 1000 °C. Eia kekahi, hoʻonui ka ikaika wela o ka mea ma o ka hoʻomaʻemaʻe microstructure. ʻOi aku ka maikaʻi o ka hoʻohui ʻana i ka tantalum i ka composite ma mua o ka hoʻohui ʻana i ka vanadium, niobium a i ʻole tungsten no ka hoʻomaikaʻi ʻana i ka ikaika o ka mea ma nā mahana ma kahi o 1400 °C. ʻOi aku ka ikaika o nā alloys i hana ʻia e ka hui ʻo Kyoto University i nā wela kiʻekiʻe ma mua o nā superalloys nickel-based hou a me nā mea hana ultrahigh-temperature structural i kūkulu hou ʻia, hōʻike nā mea noiʻi i kā lākou noiʻi i paʻi ʻia ma ka puke moʻolelo Science and Technology of Advanced Materials.