ʻOi aku ka maikaʻi o ka thermal conductivity, he coefficient i hoʻopaʻa ʻia o ka hoʻonui wela a me ka maʻemaʻe o nā mea. Akaka loa: Loaʻa i kā mākou huahana no ka ʻoihana uila nā waiwai kino kūikawā. Hoʻohana ʻia e like me nā papa kumu a me nā mea hoʻolaha wela, hōʻoia lākou i ka hilinaʻi o nā mea uila.

I ka nānā mua ʻana, ʻo ka ʻoiaʻiʻo o ka hana ʻana o nā mea uila i ka wela, ʻaʻole ia he mea e hopohopo ai. I kēia mau lā, hiki i nā keiki kula ke haʻi iā ʻoe e mahana ana nā ʻāpana o ke kamepiula ke hoʻā ʻia. ʻOiai e hana ana ka mea hana, ua nalowale kekahi hapa o ka ikehu uila i hāʻawi ʻia e like me ka wela. Akā, e nānā pono kākou: Hiki ke hōʻike ʻia ka hoʻololi ʻana o ka wela ma ke ʻano he kahe wela o kēlā me kēia ʻāpana (o) ʻāpana (heat flux density). E like me ka hōʻike ʻana o nā laʻana ma ka pakuhi, ʻoi aku ka ʻoi loa o ka nui o ke kahe o ka wela ma nā ʻāpana uila. E like me ke kiʻekiʻe i loko o ka puʻu nozzle rocket kahi e piʻi ai nā mahana a hiki i 2800 °C.

ʻO ka coefficient o ka hoʻonui wela kekahi mea koʻikoʻi no nā semiconductor āpau. Inā hoʻonui ka semiconductor a me ka mea papa kumu a ʻaelike i nā uku like ʻole i ka wā e ʻike ʻia ai i nā loli i ka wela a laila e ala mai nā pilikia mechanical. Hiki i kēia mau mea ke hōʻino i ka semiconductor a i ʻole ka hoʻopili ʻana i ka pilina ma waena o ka chip a me ka mea hoʻolaha wela. Eia naʻe, me kā mākou mau mea, ʻike ʻoe aia ʻoe i nā lima palekana. Loaʻa i kā mākou mea waiwai ka coefficient maikaʻi loa o ka hoʻonui wela no ka hoʻohui ʻana i nā semiconductor a me nā ceramics.

E like me nā papa kumu semiconductor, no ka laʻana, hoʻohana ʻia kā mākou mau mea i nā turbines makani, nā kaʻaahi a me nā noi ʻoihana. I nā modula semiconductor mana no nā inverters (thyristors) a me nā diodes mana, hana lākou i kahi hana koʻikoʻi. No ke aha mai? Mahalo i kā lākou coefficient maikaʻi loa o ka hoʻonui ʻana i ka wela a me ka conductivity thermal maikaʻi loa, hoʻokumu nā papa kumu semiconductor i ke kumu ikaika no ka semiconductor silicon koʻikoʻi a hōʻoia i ke ola lawelawe module ma mua o 30 mau makahiki.

ʻO nā mea hoʻolaha wela a me nā papa kumu i hana ʻia mai ka molybdenum, tungsten, MoCu, WCu, Cu-Mo-Cu a me Cu-MoCu-Cu laminates e hoʻopau pono i ka wela i hana ʻia i nā mea uila. Mālama kēia i ka wela nui o nā mea uila a hoʻonui i ke ola o nā huahana. ʻO kā mākou mea hoʻolaha wela e kōkua i ka mālama ʻana i kahi ʻano ʻoluʻolu, no ka laʻana, i nā modula IGBT, nā pūʻulu RF a i ʻole nā ​​pahu LED. Ua hoʻomohala mākou i kahi mea hoʻohui MoCu koʻikoʻi loa no nā papa lawe i nā pahu LED. Loaʻa i kēia ka coefficient o ka hoʻonui wela e like me ka sapphire a me ka ceramics.

Hāʻawi mākou i kā mākou huahana no ka ʻoihana uila me nā ʻano like ʻole. Mālama lākou i nā mea mai ka corrosion a hoʻomaikaʻi i ka pilina solder ma waena o ka semiconductor a me kā mākou mea.