I-iron nickel alloy itholakala ebangeni lokushisa elinikeziwe ngokulungisa okuqukethwe kwamandla angaphakathi e-nickel kanye ne-expansion coefficient yengilazi ethambile ehlukene kanye ne-ceramic ehambisana nochungechunge lwe-expansion alloy, i-expansion coefficient yayo kanye ne-Curie lokushisa kuyanda ngokwanda kokuqukethwe kwe-nickel. I-assembly isetshenziswa kabanzi embonini ye-vacuum kagesi kanye nesakhiwo sokuvala sezinto.
Ukwakheka Kwamakhemikhali ku-%, Invar
| uphawu | Ukwakheka kwamakhemikhali | ||||||||
| Ni | Fe | C | P | Si | Co | Mn | Al | S | |
| ≤ | |||||||||
| 4j42 | 41.5~42.5 | I-Bal | 0.05 | 0.02 | 0.3 | - | 0.80 | 0.10 | 0.02 |
| 4j45 | 44.5~45.5 | I-Bal | 0.05 | 0.02 | 0.3 | - | 0.80 | 0.10 | 0.02 |
| 4j50 | 49.5~50.5 | I-Bal | 0.05 | 0.02 | 0.3 | 1.0 | 0.80 | 0.10 | 0.02 |
| 4j52 | 51.5~52.5 | I-Bal | 0.05 | 0.02 | 0.3 | - | 0.60 | - | 0.02 |
| 4j54 | 53.5~54.5 | I-Bal | 0.05 | 0.02 | 0.3 | - | 0.60 | - | 0.02 |
Ama-constant ayisisekelo angokwenyama kanye nezakhiwo ze-alloy:
| uphawu | Ukuqhuba kwe-thermal | Umthamo wokushisa othize | Ubuningi | Ukumelana nogesi | Iphuzu leCurie |
| 4j52 | 16.7 | 502J | 8.25 | 0.43 | 520 |
| Uhlamvu olujwayelekile lokunwebeka (10 -6 / ºC) | ||||||||
| Ibanga lokushisa | 20~100 | 20~200 | 20~300 | 20~350 | 20~400 | 20~450 | 20~500 | 20~600 |
| I-coefficient yokwandisa | 10.3 | 10.4 | 10.2 | 10.3 | 10.3 | 10.3 | 10.8 | 11.2 |
I-alloy engu-4 j52 isetshenziswa kakhulu ekuvaleni ingilazi ethambile, ama-fuse amashubhu amancane.
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