1. He aha ka metalahuʻa?
ʻO ka pahu metala he metala porous me ka porosity oi aku ma mua o 90% a me kekahi ikaika a paʻakikī. ʻO kēia huahana he mea metala i loaʻa ka pore foam, ʻoi aku ka kiʻekiʻe o ka porosity ma mua o ka metala porous sintered maʻamau, a hiki i ka nui o ka pore ke hiki i 7 mm.
ʻO ka ʻūhā metala kahi mea i hoʻohui ʻia ʻelua ʻāpana i haku ʻia me ka pore dispersed phase a me ka metala matrix skeleton hoʻomau i ka pae a me ka pae, a ʻo kāna hana e pili ana i ka mana o ka metala matrix, porosity, pore structure a me ka hoʻomākaukau ʻana.

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2. Hiki ke ho'ohana 'ia ka hu'ahua metala no ka pale ahi pahū?
He maikaʻi ka wai permeability a me ke kūpaʻa ahi maikaʻi. Hiki ke waiho ʻia i loko o nā paipu e lawe ana i nā kinoea lapalapa a i ʻole nā ​​​​wai e hoʻōki ai i ka laha ʻana o ka lapalapa ma o ka hoʻopaʻa ʻana i ka wela, a laila hoʻōki i ka pahū.
He kūpono kēia huahana no ka acetylene, oxygen flame gas welding and gas cutting technology, mining motors and power switches, oil refining and combustible gas pipelines, burner system, oil and gas recovery systems, heating furnaces, gas hoʻomaʻemaʻe pūnaewele, etc. e hoʻohana pū ʻia ma ke ʻano he mea hoʻopiha ahi a pahū no nā pahu mālama e like me ke kinoea liquefied a me ka wahie.