He aha nā ʻano hana no ka huʻa keleawe?
Huʻa keleawehe mea hana hou ia. Pehea e hana ʻia ai? ʻOiaʻiʻo, e like me ka hapa nui o ka metala Huʻas, hoʻohana nui ka huʻa keleawe i ke keleawe ma ke ʻano he mea kumu. I ka wā o ka hana ʻana, ua hoʻolaha like ʻia nā pores he nui i hoʻopili ʻia a i ʻole i hoʻopili ʻole ʻia ma loko o ka substrate keleawe.
ʻAʻole wale ka huʻa keleawe i loaʻa nā pono o nā metala huʻa akā hoʻoilina pū kekahi i nā waiwai kūlohelohe o ke keleawe. No ka laʻana, hōʻike ia i ka conductivity uila maikaʻi loa a me ka ductility. Ke hoʻohālikelike ʻia me huʻa nikala, hāʻawi ka huʻa keleawe i nā kumukūʻai hana haʻahaʻa a me ka hiki ke hoʻohana ākea. Eia nō naʻe, me ka hoʻoilina ʻana i nā ʻano o ke keleawe, ua kaʻana like ka huʻa keleawe a me ke keleawe i ka hemahema o ke kūpaʻa ʻino. Ma lalo nei, e wehewehe mākou i nā kaʻina hana a me nā ʻano hana no ke keleawe huʻa:
1. Pauka Ke ʻano hana hao
ʻO kēia ʻano hana e pili ana i ka hoʻohui mau ʻana i nā mea hoʻohua i ke keleawe pauka. Ma hope o ka sintering piha ʻana, e hoʻoheheʻe nā mea hoʻohua, e waiho ana i nā pores e hana i ke keleawe i hoʻohua ʻia.
2. Ke ʻAno Hoʻokaʻawale Electrochemical
ʻO ke keleawe i hoʻohua ʻia ma o kēia kaʻina hana e hōʻike ana i nā ʻano like a me ka porosity o 95%, e kūpono ana no ka hana ʻana i ka metala i hoʻohua ʻia.
3. Ke kaʻina hana sintering-dewetting
Ke hoʻohālikelike ʻia me nā ʻano hana ʻelua ma mua, he paʻakikī loa kēia ʻano hana. ʻO ka mea mua, ua hui pū ʻia ka pauka keleawe electrolytic, nā granules sodium chloride, a me nā mea hoʻohui like ʻole. A laila ua kaomi ʻia ka hui ʻana i loko o kahi compact ʻōmaʻomaʻo. Hoʻopaʻa ʻia kēia compact ʻōmaʻomaʻo i loko o kahi lewa argon, a ua hoʻoheheʻe ʻia ka huahana i loko o kahi ʻauʻau wai wela e kaʻapuni ana. Ma hope o ka hoʻoheheʻe ʻana, ua hele ka mea i ka hoʻomaʻemaʻe ʻauʻau ultrasonic a me ka holoi ʻana o ka acetone. Ma hope o ka holoi ʻana, ua hoʻomaloʻo ʻia e hana i ka ʻano hāmama. Eia naʻe, loaʻa i kēia ʻano hana kahi ratio porosity o 50-81% wale nō, me ka awelika o ka nui o ka pore mai 0.2 a 4 mm.
I kēia manawa, ʻo ka hapa nui huʻa keleawe Hoʻohana nui ka hana ʻana i nā ʻano hana ʻekolu i luna. ʻO ka metallurgy pauka a me ka hoʻokaʻawale electrochemical nā ʻano hana i hoʻohana pinepine ʻia i ke kaʻina hana. ʻOiai he nui nā pono a me ka pono o nā metala huʻa, me nā manaʻolana noi ākea a me nā kahua, ua lilo ka hōʻemi ʻana i nā kumukūʻai hana a me ka hoʻomaikaʻi ʻana i nā kaʻina hana i mau pilikia ʻepekema e pono ai ka hoʻonā.
