I-Silicon nitride iyi-ceramic empunga enokuqina okuphezulu kokuphuka, ukumelana nokushisa okuhle kakhulu, kanye nezakhiwo ezingenakungeneka ezinsimbi ezincibilikisiwe.
Isebenzisa lezi zici, isetshenziswa ezingxenyeni zenjini evuthayo yangaphakathi njengezingxenye zenjini yemoto, imibhobho ye-blowpipe yomshini wokushisela, njll., ikakhulukazi izingxenye ezidinga ukusetshenziswa ezindaweni ezinokhahlo njengokushisa ngokweqile.
Ngokumelana kwayo nokugqokwa okuphezulu namandla amakhulu emishini, ukusetshenziswa kwayo ezingxenyeni ze-roller, ama-shaft bearings ajikelezayo kanye nezingxenye ezisele zemishini yokukhiqiza i-semiconductor zikhula njalo.
Izakhiwo ze-silicon nitride ceramics
I-1, inamandla aphezulu ebangeni elikhulu lokushisa;
2, ukuphuka okuphezulu kokuqina;
3, amandla amahle okugoba;
4, ukumelana nokukhathala kwemishini nokukhasa;
5, ukukhanya - ukuminyana okuphansi;
6, ubulukhuni obuphezulu nokumelana nokugqoka;
I-7, ukumelana nokushaqeka okuhle kakhulu kokushisa;
8, ukwanda okushisayo okuphansi;
9, isivikelo sikagesi;
10, ukumelana okuhle kwe-oxidation;
I-11, ukumelana nokugqwala kwamakhemikhali okuhle.
I-Silicon nitride ceramics ine-coefficient ephansi yokwandisa okushisayo kanye ne-thermal conductivity ephezulu, ngakho-ke inokumelana nokushaqeka kokushisa okuhle kakhulu. I-silicon nitride ecindezelwe ngokushisayo ngeke iphuke ngemva kokushiswa ibe ngu-1000 ℃ futhi ifakwe emanzini abandayo. Emazingeni okushisa angeqisi kakhulu, i-silicon nitride inamandla amakhulu kanye nokumelana nomthelela, kepha ngaphezu kuka-1200 ℃ izolimala ngokukhula kwesikhathi sokusetshenziswa, ukuze amandla ayo anciphe, athambekele ekulimaleni kokukhathala ngaphezu kuka-1450 ℃, ngakho ukusetshenziswa izinga lokushisa le-Si3N4 ngokuvamile alidluli ku-1300℃.
Ngakho-ke, i-silicon nitride isetshenziswe kabanzi ku:
1. Ibhola elijikelezayo nama-roller bearings;
2. Izingxenye zenjini: i-valve, i-rocker arm pad, indawo yokuvala;
3. Ubakaki wekhoyili wokushisa wokungeniswa;
4. Ama-turbine izindwani, izindwani, amabhakede;
5. Izinto zokushisela nezokubhsa;
6. Ukuhlanganiswa kwesici sokushisa;
7. Indawo yokushisela;
8. Imikhono nemikhono enembile ezindaweni ezigqoke kakhulu;
9. Thermocouple sheath kanye neshubhu;
10. Imishini yenqubo ye-semiconductor.