Iyi alloy zvakare caleed Girazi yakavharwa uye yakadzora yekuwedzera alloy,The alloy ine amutsara wekuwedzera coefficientyakafanana neiyo yesilicon boron girazi rakaoma pa20-450 ° C, ayakakwira Curie poindi, uye yakanaka yakaderera-tembiricha kugadzikana kwechimiro.Iyo oxide firimu yealloy yakaoma uye inogona kuva yakanakawettedbygirazi.Izvo hazvidyidzane ne mercury uye inokodzera kushandiswa mune mercury-ine discharge metres.Ndiyo huru yekuisa chisimbiso chimiro chemagetsi vacuum zvishandiso.
C | Cr | Ni | Mo | Si | Mn | P | S | Fe | Co | Cu |
≤0.03 | ≤0.2 | 28.5-29.5 | ≤0.2 | ≤0.3 | ≤0.5 | ≤0.02 | ≤0.02 | balance | 16.8-17.8 | ≤0.2 |
Density(g/cm3) | Thermal conductivity(W/m·K) | Electrical resistivity(μΩ·cm) |
8.3 | 17 | 45 |
Alloy Grades
| Avhareji yemutsara wekuwedzera coefficient a,10-6/ oC | |||||||
20-200 oC | 20-300 oC | 20-400 oC | 20-450 oC | 20-500 oC | 20-600 oC | 20-700 oC | 20-800 oC | |
kovar | 5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
Alloy Grades | Muenzaniso wekupisa kupisa system | Avhareji yemutsara wekuwedzera coefficient α,10-6/ oC | ||
Kovar | 20-300 oC | 20-400 oC | 20-450 oC | |
Mumhepo yehydrogen yaipisa kusvika 900 ± 20 oC, insulation 1h, yozopisa kusvika 1100 ± 20 oC, insulation 15min, kusadarika 5 oC / min mwero wekutonhora kusvika pazasi 200 oC yakaburitswa. | ----- | 4.6-5.2 | 5.1-5.5 |
Alloy Grades | Avhareji yemutsara wekuwedzera coefficient a,10-6/ oC | |||||||
Kovar | 20-200oC | 20-300 oC | 20-400oC | 20-450oC | 20-500oC | 20-600oC | 20-700oC | 20-800oC |
5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
1.Kovar ine kushandiswa kwakakura mumagetsi emagetsi, zvakadai sezvikamu zvesimbi zvakasungirirwa kumavhopupu egirazi yakaoma.Izvi zvikamu zvinoshandiswa kumidziyo yakadai semachubhu emagetsi uye X-ray machubhu, nezvimwe.
2.Mu semiconductor industry kovar inoshandiswa mu hermetically sealed packages for both integrated and discrete circuit devices.
3.Kovar inopiwa mumhando dzakasiyana-siyana kuitira kuti zvive nyore kugadzira zvikamu zvakasiyana-siyana zvesimbi.Iine maitiro ekuwedzera ekupisa anofanana neaya egirazi rakaoma.Inoshandiswa pakubatanidza majoini ekuwedzera pakati pesimbi negirazi kana ceramics.
4.Kovar alloy is vacuum yakanyunguduka, iron-nickel-cobalt, yakaderera kuwedzera alloy iyo makemikari anoumbwa anodzorwa mukati memiganhu yakamanikana kuvimbisa chaiyo yunifomu yekupisa yekuwedzera zvinhu.Yakakura yehutongi hwehutongi hunoshandiswa mukugadzira iyi alloy kuve nechokwadi cheyunifomu yemuviri uye michina zvivakwa kuti zvive nyore mukudhirowa kwakadzika, kutsika uye machining.
Kovar Alloy Application field:
● Kovar alloy yakashandiswa kugadzira hermetic seals neiyo yakaoma magirazi ePyrex uye zvinhu zveceramic.
● Iyi alloy yakawana kushandiswa kwakakura mumachubhu emagetsi, microwave tubes, transistors uye diode.Mumaseketi akabatanidzwa, yakashandiswa kune flat pack uye maviri-mu-mutsara package.