Abaphandi kwiYunivesithi yaseKyoto baye bafumanisa ukuba i-molybdenum silicides inokuphucula ukusebenza kakuhle kwee-blades ze-turbine kwiinkqubo zokutsha zobushushu obuphezulu.

Iiinjini zegesi zii-injini ezenza umbane kwimizi-mveliso yamandla. Amaqondo obushushu asebenzayo eenkqubo zabo zokutsha angadlula kwi-1600 °C. Amagqabi einjini yenickel asetyenziswa kwezi nkqubo anyibilika kumaqondo obushushu angama-200 °C ngaphantsi kwaye afuna ukupholisa umoya ukuze kusebenze. Iibhleyidi ze-iturbine ezenziwe ngemathiriyeli ezinamaqondo obushushu okunyibilika aphezulu zinokufuna ukusetyenziswa kwepetroli kancinane kwaye zikhokelele ekukhupheni okuphantsi kweCO2.

Izazinzulu zeMathiriyeli kwiYunivesithi yaseKyoto yaseJapan ziphande iipropathi zeendlela ezahlukeneyo zokuqamba iisilidi ze-molybdenum, kunye nangaphandle kwezinto ezongezelelweyo ze-ternary.

Uphando lwangaphambili lubonise ukuba ukwenza i-molybdenum silicide-based composites ngokucinezela kunye nokufudumeza i-powders yayo-eyaziwa ngokuba yi-powder metallurgy-kuphucule ukuxhathisa kwabo kwi-fracturing kumaqondo obushushu aphakathi kodwa yehlisa amandla abo obushushu obuphezulu, ngenxa yophuhliso lwe-silicon dioxide layers ngaphakathi kwemathiriyeli.

Iqela leYunivesithi yaseKyoto lenze imathiriyeli esekwe kwi-molybdenum silicide isebenzisa indlela eyaziwa ngokuba “yi-directional solidification,” apho isinyithi esinyibilikisiweyo siqhubeka siqina kwicala elithile.

Iqela lifumene ukuba i-homogeneous material inokuqulunqwa ngokulawula izinga lokuqina kwe-molybdenum silicide-based composite ngexesha lokwenziwa kunye nokulungelelanisa ubungakanani be-ternary element eyongezwe kwi-composite.

Imathiriyeli ephumayo iqala ukonakala ngokweplastiki phantsi koxinzelelo lwe-uniaxial ngaphezulu kwe-1000 °C. Kwakhona, amandla obushushu obuphezulu bemathiriyeli ayanda ngokuphuculwa kwe-microstructure. Ukongeza i-tantalum kwi-composite kusebenza ngakumbi kunokongeza i-vanadium, i-niobium okanye i-tungsten yokuphucula amandla ezinto kumaqondo obushushu ajikeleze i-1400 °C. I-alloys eyenziwe liqela leYunivesithi yaseKyoto yomelele kakhulu kumaqondo okushisa aphezulu kune-nickel-based superalloys kunye nezinto ezisandul 'ukuphuhliswa kwe-ultrahigh-temperature yesakhiwo, abaphandi babika kwisifundo sabo esipapashwe kwiphephancwadi iSayensi kunye neTekhnoloji yezinto eziPhambili.