He aha ka graphitization?
ʻO ke kalapona kahi hana ʻoihana e hoʻololi ʻia ai ke kalapona i graphite. ʻO kēia ka loli microstructure e hana ʻia i loko o nā kila kalapona a i ʻole nā kila haʻahaʻa i hōʻike ʻia i nā mahana o 425 a 550 degere Celsius no ka manawa lōʻihi, e ʻōlelo i 1,000 mau hola. He ʻano embrittlement kēia. No ka laʻana, ʻo ka microstructure o nā kila kalapona-molybdenum pinepine i loaʻa ka pearlite (kahi hui o ka ferrite a me ka cementite). Ke graphitized ka mea, hana ia i ka pearlite e decompose i ferrite a me ka graphite i hoʻopuehu ʻia. ʻO kēia ka hopena i ka embrittlement o ke kila a me ka emi iki ʻana o ka ikaika i ka wā e hoʻolaha ʻia ai kēia mau ʻāpana graphite ma o ka matrix. Eia nō naʻe, hiki iā mākou ke pale aku i ka graphitization ma ka hoʻohana ʻana i nā mea me ke kū'ē kiʻekiʻe aʻe i emi iki ka naʻau i ka graphitization. Eia kekahi, hiki iā mākou ke hoʻololi i ke kaiapuni ma o, no ka laʻana, ka hoʻonui ʻana i ka pH a i ʻole ka hōʻemi ʻana i ka ʻike chloride. ʻO kekahi ala e pale aku ai i ka graphitization e pili ana i ka hoʻohana ʻana i kahi uhi. Palekana Cathodic o ka hao i hoʻolei ʻia.
He aha ka hoʻoheheʻe ʻana i ke kalapona?
ʻO ke kalapona kahi hana ʻoihana kahi e hoʻololi ʻia ai nā mea olaola i kalapona. ʻO nā mea olaola a mākou e noʻonoʻo nei ma ʻaneʻi e komo pū me nā kupapaʻu mea kanu a me nā holoholona. Hana ʻia kēia hana ma o ka distillation luku. He hopena pyrolytic kēia a ua manaʻo ʻia he hana paʻakikī kahi e hiki ai ke nānā ʻia nā hopena kemika he nui i ka manawa like. No ka laʻana, dehydrogenation, condensation, hydrogen transfer a me isomerization. He ʻokoʻa ke kaʻina hana kalapona mai ke kaʻina hana kalapona no ka mea he hana wikiwiki ke kalapona no ka mea he nui nā kauoha o ka nui i pane wikiwiki ʻia. Ma keʻano laulā, hiki i ka nui o ka wela i hoʻopili ʻia ke kāohi i ke kekelē o ke kalapona a me ka nui o nā mea haole i koe. No ka laʻana, ʻo ka nui o ke 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, he hopena exothermic ke kalapona, hiki ke waiho ʻia iā ia iho a hoʻohana ʻia paha ma ke ʻano he kumu ikehu me ka ʻole o ka hana ʻana i kekahi kaha o ke kinoea kalapona dioxide. Eia nō naʻe, inā hōʻike ʻia ka biomaterial i nā loli koke o ka wela (e like me ka pahū nukelea), e kalapona koke ka biomaterial a lilo i kalapona paʻa.
Ua like ke kalapona me ke kalapona
He mau kaʻina 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?
ʻElua mau kaʻina hana ʻoihana ka graphitization a me ke carbonization. ʻO ka ʻokoʻa nui ma waena o ke carbonization a me ka graphitization, ʻo ia ka hoʻololi ʻana o ka mea olaola i ke kalapona, ʻoiai ʻo ka graphitization e pili ana i ka hoʻololi ʻana o ke kalapona i ka graphite. No laila, he loli kemika ka carbonization, ʻoiai ʻo ka graphitization he loli microstructure.
Ka manawa hoʻouna: Sep-29-2021