Hoʻohana nui ʻia nā metala i nā ʻoihana like ʻole mai ke kūkulu ʻana a hiki i ka hana ʻana. Eia naʻe, manaʻo nui ka poʻe inā he porous ka metala. Ma kēia ʻatikala, kūkākūkā mākou i ke ʻano o ka porosity, pehea e pili ai i nā metala, a pane i kekahi mau nīnau i nīnau pinepine ʻia e pili ana i ka porosity i nā metala.
He aha ka porosity?
ʻO ka porosity kahi ana o ka hakahaka (pores) i loko o kahi mea. ʻO ia ka ratio o ka nui o kēia mau hakahaka i ka nui o ka nui o ka mea. Hoʻopili ka porosity i nā waiwai kino a me nā mechanical o nā mea e like me ka density, ka ikaika a me ka permeability.
Aia nā ʻano like ʻole o ka Porosity, me:
Paʻa Porosity:ʻAʻole pili i ka ʻili o kahi mea.
ʻO ka porosity wehe:ʻO nā hakahaka i pili i ka ʻili o kahi mea.
Ma o Porosity:Hoʻopili ʻia nā hakahaka i nā ʻili ʻelua o kahi mea.
ʻO kekahi mau laʻana o nā mea porous he sponges, pepa, a me ka huʻa, aʻo nā mea porous ʻole he aniani, keramika, a me kekahi mau metala.
He aha ka manaʻo o ka porous?
ʻO ka Porous kahi huaʻōlelo e wehewehe ana i kahi mea i loaʻa nā pores a i ʻole nā pores e hiki ai i nā wai a me nā kinoea ke hele i loko. ʻO ia hoʻi, pili ia i ka hiki o kahi mea ke hoʻomohu a i ʻoleʻae i nā mea e hele ai. Loaʻa i nā mea porous kahi kiʻekiʻe kiʻekiʻe a hoʻohana ʻia i nā ʻano like ʻole e like me ka kānana, insulation a me ka absorption.
Nā Laʻana o nā Mea Porous a Porous ʻole
1. ʻO kekahi mau laʻana o nā mea porous:
ʻōhuʻu
lepo
lāʻau
Huhū
Pepa
lanahu
2. ʻO kekahi mau laʻana o nā mea porous ʻole:
aniani
seramika
ʻO kekahi mau metala (e like me ke gula, ke kālā, a me ka platinum)
plastik (e pili ana i ke ʻano)
Porosity i nā metala
He porous paha nā metala ma muli o ke kaʻina hana a i ʻole ka hoʻohana ʻana. Hiki i nā metala porous ke loaʻa nā waiwai e like me ka hoʻonui ʻia o ka ʻili, hoʻonui i ka wela a me ka conductivity uila, a hoʻomaikaʻi i ka hiki ke kānana.
No ka laʻana, porous paha ke kila kila ma muli o ke alo o nā welds a i ʻole ka hoʻokumu ʻana o ka corrosion. Hiki ke porous ka alumini ma muli o ka hoʻokumu ʻia ʻana o nā papa oxide a i ʻole nā mea haumia i loko o ka metala. He porous paha ke kila ma muli o kāna kaʻina hana a i ʻole ka ʻike ʻana i nā kaiapuni corrosive.
Ka hoao ana no ka Porosity ma na Metala
No ka hoʻoholo ʻana i ka porosity o kahi metala, hiki ke hoʻohana ʻia nā ʻano hana like ʻole, e like me:
ʻIkepili metallographic:Hoʻohana ʻia kēia i ka microscope e nānā i ke ʻano o ka metala.
Radiography:Hoʻopili kēia i ka wehe ʻana i ka metala i nā hihi X e ʻike ai i nā hakahaka o loko.
Ka ho'āʻo ultrasonic:Hoʻohana ʻia kēia i nā hawewe kani alapine kiʻekiʻe e ʻike i nā hakahaka o loko.
Keʻano pycnometric kinoea:Hoʻopili kēia i ke ana ʻana i ka nui o ke kinoea i hoʻoneʻe ʻia e ka mea paʻa.
Loaʻa i kēlā me kēia ala kona mau pono a me nā hemahema a hiki ke koho ʻia e like me nā koi o ka noi.
Hoʻohana Metala Porous
Hoʻohana ʻia nā metala porous i nā ʻano noi like ʻole ma nā ʻoihana, e like me:
Kaʻa:Hoʻohana ʻia i nā ʻōnaehana hoʻokele wahie, nā kānana ea a me nā ʻōnaehana hoʻopau.
Lapaʻau:No nā implants, nā niho implants a me nā mea hana ʻoki.
Mea uila:No nā mea wela a me ka pale electromagnetic.
Aerospace:No nā pahu wahie, nā mea hoʻololi wela a me nā kānana.
Kūkulu ʻia:No nā panela acoustic a me nā pale facade.
ʻO kekahi o nā huahana metala hoʻonui kaulana loa ma ka mākeke, ʻo ia ka pā metala i hoʻonui ʻia,
paipu metala ho'onui, pepa alumini ho'onui, pepa alumini ho'onui, a me ka hu'a metala.
Pehea e pale ai i nā pores i ka metala
Hiki ke pale ʻia nā puka makani ma o ka lawe ʻana i kēia mau hana:
ʻO ke koho kūpono o nā mea maka a me nā mea hao.
Hoʻomākaukau kūpono i nā ʻili metala ma mua o ka wili a hui ʻana.
ʻO nā ʻenehana a me nā ʻāpana kūpono ke kuʻi ʻana a i ʻole ka hui ʻana.
E hoʻohana i ke kinoea pale a i ʻole ka flux.
E hōʻemi i ka ʻike ʻana i nā kaiapuni corrosive.
Ma ka lawe ʻana i kēia mau ana, hiki ke hoʻemi ʻia ka hoʻokumu ʻana o nā void i loko o ka metala, e hopena i nā huahana metala ikaika a hilinaʻi.
Poha anei ke kila kila?
ʻAʻole manaʻo ʻia ke kila kila he mea porous ma ke ʻano kuʻuna no ka mea ʻaʻole ia e ʻae i nā mea e hele maʻalahi. Eia nō naʻe, he mea nui e hoʻomaopopo e hiki ke hoʻololi ʻia nā ʻili kila kuhiliʻole i mea e ʻoi aʻe ai ka porous, ma muli o ke kaʻina hana hoʻopau kikoʻī i hoʻohana ʻia. No ka laʻana, ʻoi aku ka liʻiliʻi o ka porous o ka ʻili kila kuhili ʻole ma mua o ka ʻili i palaki ʻia a i ʻole ke one. Eia kekahi, inā ʻino a ʻānai paha ka ʻili o ke kila kila, ʻoi aku ka maʻalahi o ka ʻino a hiki ke komo maʻalahi nā mea.
Ua Poha ka Aluminum?
ʻO ka alumini ka manaʻo maʻamau he metala porous no ka mea hiki iā ia ke komo maʻalahi i nā wai a me nā kinoea ma kona ʻili. Ma muli o ka hana maoli ʻana o ka alumini i kahi ʻāpana lahilahi o ka oxide ma luna o kona ʻili, e hana ana i nā pores liʻiliʻi e hiki ai i nā mea ke hele. Eia nō naʻe, hiki ke ʻokoʻa ke kiʻekiʻe o ka porosity ma muli o nā kumu e like me ke alumini o ka alumini, ka hoʻopau ʻana i ka ʻili, a me nā uhi a i ʻole nā mea lapaʻau i hoʻopili ʻia i ka ʻili. I kekahi mau hihia, hiki ke hoʻemi ʻia ka alumini i ka porosity ma o nā kaʻina hana e like me ka anodizing a i ʻole ka uhi ʻana me kahi mea hoʻopaʻa.
Ua Poha ke kila?
E like me ke kila kila, ʻaʻole i manaʻo ʻia ke kila he mea porous ma ke ʻano kuʻuna. Eia nō naʻe, hiki ke hilinaʻi ka porosity o ke kila ma nā kumu he nui, e like me ke ʻano o ke kila kikoʻī, ka hoʻopau ʻana o ka ʻili, a me nā uhi a i ʻole nā mea lapaʻau i hoʻopili ʻia i ka ʻili. No ka laʻana, hiki i kekahi mau ʻano kila ke loaʻa i kahi ʻano o ka palaoa ākea a ʻoi aku ka maʻalahi o ka corrosion a i ʻole ka ʻōpala, hiki ke alakaʻi i ka hoʻokumu ʻana o nā pores a i ʻole nā lua i ka manawa. Eia hou, inā ʻaʻole i hoʻopololei ʻia a pale ʻia paha ka ʻili o ke kila, hiki ke lilo i porous a maʻalahi i ka corrosion a i ʻole nā ʻano ʻino ʻē aʻe.
He aha nā huahana metala porous kaulana ma ka mākeke?
ʻAe, aia kekahi mau huahana metala porous kaulana ma ka mākeke. ʻO kekahi o nā huahana metala porous maʻamau:
5.1 Pepa Metala Perforated
He mau metala pālahalaha kēia me ka porosity i hoʻomalu ʻia e hiki ke hoʻohana ʻia no ka kānana, diffusion a me nā noi ʻē aʻe.
Hana ʻia lākou me ke kila kila, titanium a i ʻole nickel alloys.
5.2 Poka Metala Tube
He mau paipu hollow kēia me ka porosity kaohi i hiki ke hoʻohana ʻia no ka kānana, aeration, a me nā noi ʻē aʻe.
Hana ʻia lākou me ke kila kila a i ʻole ka titanium.
5.3 Poha Aluminum Papa
ʻO kēia nā papa pālahalaha o ka alumini me ka porosity i hoʻomalu ʻia e hiki ke hoʻohana ʻia no ka kānana, diffusion a me nā noi ʻē aʻe.
Hoʻohana pinepine ʻia lākou i nā ʻoihana e like me ka aerospace a me ka automotive.
5.4. Papa Aluminum Pua
ʻO kēia nā papa pālahalaha o ka alumini me ka porosity i hoʻomalu ʻia e hiki ke hoʻohana ʻia no ka kānana, diffusion a me nā noi ʻē aʻe.
Hoʻohana pinepine ʻia lākou i nā ʻoihana e like me ka uila a me nā mea lapaʻau.
5.5 Poha Metala Poha
ʻO kēia nā hale māmā ʻekolu-dimensional i hana ʻia me nā metala me ka porosity hoʻomalu.
Hoʻohana pinepine ʻia lākou i nā ʻoihana e like me ka ikehu, aerospace a me ka automotive no nā noi e like me nā mea hoʻololi wela,
nā mea hoʻololi catalytic a me ke kani kani.
i ka hopena
I ka hōʻuluʻulu ʻana, hiki ke porous nā metala ma muli o nā kumu like ʻole e like me ke kaʻina hana o ka metala, ka ʻike ʻana i ka corrosive.
kaiapuni, a i ʻole ka hoʻohana ʻana. Loaʻa i nā metala porous nā noi he nui i nā ʻoihana like ʻole a hiki i kā lākou mau waiwai
hoʻonui ʻia e hoʻokō i nā koi kikoʻī. Pono e hoʻāʻo ʻia ka porosity i nā metala e hōʻoia i ka maikaʻi a me ka hilinaʻi. Me ka pono
Hiki ke hoʻemi ʻia ka porosity i nā metala, ka hopena i nā huahana metala ikaika a paʻa.
Ka manawa hoʻouna: Mei-09-2023
