He aha ka graphitization?
ʻO ka graphitization kahi hana ʻenehana kahi e hoʻololi ai ke kalapona i graphite.ʻO kēia ka hoʻololi microstructure i hana ʻia i loko o ke kalapona a i ʻole nā mea hao haʻahaʻa haʻahaʻa i hōʻike ʻia i nā mahana o 425 a i 550 degere Celsius no nā manawa lōʻihi, e ʻōlelo i nā hola 1,000.ʻO kēia ke ʻano o ka embrittlement.No ka laʻana, ʻo ka microstructure o nā kila carbon-molybdenum e loaʻa pinepine i ka pearlite (kahi hui o ka ferrite a me ka cementite).Ke kiʻi ʻia ka mea, hoʻoheheʻe ʻia ka pearlite i ferrite a hoʻopuehu wale ʻia.ʻO kēia ka hopena i ka embrittlement o ke kila a me ka hoʻemi haʻahaʻa o ka ikaika i ka wā e puʻunaue wale ʻia kēia mau ʻāpana graphite i loko o ka matrix.Eia naʻe, hiki iā mākou ke pale i ka graphitization ma o ka hoʻohana ʻana i nā mea me ke kūpaʻa kiʻekiʻe aʻe i emi ʻole i ka graphitization.Eia hou, hiki iā mākou ke hoʻololi i ke kaiapuni ma, no ka laʻana, hoʻonui i ka pH a i ʻole ka hōʻemi ʻana i ka ʻike chloride.ʻO kahi ala ʻē aʻe e pale ai i ka graphitization ʻo ka hoʻohana ʻana i kahi uhi.Pale Cathodic o ka hao.
He aha ka carbonization?
ʻO ka carbonization kahi hana ʻenehana kahi e hoʻololi ʻia ai ka mea ola i carbon.ʻO nā mea olaola a mākou e noʻonoʻo nei ma ʻaneʻi, ʻo ia nā kupapaʻu mea kanu a me nā holoholona.Hana ʻia kēia hana ma ka distillation hoʻopau.He hopena pyrolytic kēia a ua manaʻo ʻia he kaʻina hana paʻakikī kahi e ʻike ʻia ai nā hopena kemika like ʻole.No ka laʻana, dehydrogenation, condensation, hydrogen transfer a isomerization.'Oko'a ke ka'ina hana kalapona mai ka hana kalapona no ka mea 'oi aku ka wikiwiki o ka hana kalapona no ka mea 'oi aku ka wikiwiki o ka hana 'ana i nā kauoha he nui.Ma keʻano laulā, hiki i ka nui o ka wela ke hoʻomalu i ka degere o ka carbonization a me ka nui o nā mea ʻē aʻe i koe.No ka laʻana, ʻo ka maʻiʻo kalapona o ke koena ma kahi o 90% ma ke kaumaha ma 1200K a ma kahi o 99% ma ke kaumaha ma kahi o 1600K.Ma keʻano laulā, ʻo ka carbonization kahi hopena exothermic, hiki ke waiho iā ia iho a hoʻohana ʻia ma ke ʻano he kumu ikehu me ka ʻole o ka hana ʻana i kahi ʻano o ke kinoea carbon dioxide.Eia nō naʻe, inā ʻike ʻia ka biomaterial i nā hoʻololi koke i ka wela (e like me ka pahū nuklea), e carbonize ka biomaterial i ka hikiwawe a lilo i kalapona paʻa.
Ua like ka graphitization me ka carbonization
He mau hana ʻoihana koʻikoʻi nā mea ʻelua e pili ana i ke kalapona ma ke ʻano he reactant a huahana paha.
He aha ka ʻokoʻa ma waena o ka graphitization a me ka carbonization?
ʻO ka graphitization a me ka carbonization ʻelua mau hana ʻoihana.ʻO ka ʻokoʻa nui ma waena o ka carbonization a me ka graphitization ʻo ia ka hoʻololi ʻana o ka carbonization i ka carbon, aʻo ka graphitization ka hoʻololi ʻana i ke kalapona i ka graphite.No laila, he hoʻololi kemika ka carbonization, ʻo ka graphitization he hoʻololi microstructure.
Ka manawa hoʻouna: Sep-29-2021