Uea Hoʻonui Haʻahaʻa Kovar 4j29 Uea, Uea 29HK no ka Alloy Sealing Glass
ʻAʻole wale ʻo Alloy-4J29 wale nō ka hoʻonui ʻana i ka wela e like me ke aniani, akā hiki ke hana pinepine ʻia kona ʻāpana hoʻonui wela nonlinear e like me ke aniani, no laila e ʻae ai ka hui e ʻae i kahi ākea ākea. ʻO ke kemika, hoʻopaʻa ʻo ia i ke aniani ma o ka ʻāpana oxide waena o ka nickel oxide a me ka cobalt oxide; haʻahaʻa ka hapa o ka hao hao ma muli o kona emi ʻana me ka cobalt. ʻO ka ikaika o ka paʻa e hilinaʻi nui ʻia i ka mānoanoa a me ke ʻano o ka papa oxide. ʻO ka loaʻa ʻana o ka cobalt e maʻalahi ka hoʻoheheʻe ʻana a me ka hoʻoheheʻe ʻana i ka papa o ka oxide i loko o ke aniani hoʻoheheʻe. ʻO kahi hina hina, hina-uliuli a hina-ʻeleʻele paha e hōʻike ana i kahi sila maikaʻi. Hōʻike ka waihoʻoluʻu metala i ka nele o ka oxide, ʻoiai ke kala ʻeleʻele e hōʻike ana i ka metala oxidized loa, ma nā hihia ʻelua e alakaʻi i kahi hui nāwaliwali.
Noi:Hoʻohana nui ʻia i nā ʻāpana uila a me ka mana hoʻokuʻu ʻana, ka puʻupuʻu haʻalulu, ka pahu igniting, ka magnetron aniani, nā transistors, ka plug seal, relay, nā alakaʻi i hoʻohui ʻia, chassis, brackets a me nā mea hoʻopaʻa hale ʻē aʻe.
haku mele maʻamau%
| Ni | 28.5~29.5 | Fe | ʻO Bal. | Co | 16.8~17.8 | Si | ≤0.3 |
| Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Ikaika U'i, MPa
| Code o ke kūlana | Kūlana | Uea | Kaʻi |
| R | palupalu | ≤585 | ≤570 |
| 1/4I | 1/4 Paʻakikī | 585~725 | 520~630 |
| 1/2I | 1/2 Paʻakikī | 655~795 | 590~700 |
| 3/4I | 3/4 Paʻakikī | 725~860 | 600~770 |
| I | Paʻakikī | ≥850 | ≥700 |
Nā waiwai kino maʻamau
| ʻO ka mānoanoa (g/cm3) | 8.2 |
| Hiki ke pale uila ma 20ºC(Ωmm2/m) | 0.48 |
| ʻO ka mea wela o ka resistivity(20ºC~100ºC)X10-5/ºC | 3.7~3.9 |
| Lae Curie Tc/ ºC | 430 |
| Elastic Modulus, E/ Gpa | 138 |
Coefficient o ka hoonui
| θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
| 20~60 | 7.8 | 20~500 | 6.2 |
| 20~100 | 6.4 | 20~550 | 7.1 |
| 20~200 | 5.9 | 20~600 | 7.8 |
| 20~300 | 5.3 | 20~700 | 9.2 |
| 20~400 | 5.1 | 20~800 | 10.2 |
| 20~450 | 5.3 | 20~900 | 11.4 |
ʻO ke kau wela wela
| θ/ºC | 100 | 200 | 300 | 400 | 500 |
| λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
| ʻO ke kaʻina hana wela | |
| Hoʻopiʻi no ka hoʻomaha pilikia | Hoʻomoʻa ʻia i 470~540ºC a paʻa 1~2 hola. Ke anu |
| annealing | I loko o ka vacuum wela i 750~900ºC |
| Ka manawa paʻa | 14 min~1h. |
| Laki hooluolu | ʻAʻole i ʻoi aku ma mua o 10 ºC/min i hoʻomaha ʻia i 200 ºC |
