I-Semiconductor silicon nitride ceramics

Incazelo emfushane:

I-Silicon nitride inokumelana nokushaqeka okungcono okushisayo kunezinye izitsha zobumba. Ihlanganiswe namandla aphezulu, ukunwebeka okushisayo okuphansi, ukumelana nokugqwala okuhle kanye nokuqina kokuphuka, i-silicon nitride ivamise ukusetshenziswa ku-aerospace noma izimboni zezimoto. Ezinye izinhlelo zokusebenza ezinjengamabhomu okushisa, ukucutshungulwa kwensimbi encibilikisiwe, njll. Ukufakwa kukagesi, ukumelana nokugqwala okuhle, izinga lokushisa eliphakathi nendawo (13000C), izitsha zobumba zesakhiwo, izakhiwo ezinhle zemishini, ukunwetshwa okushisayo okuphansi, ukuguquguquka kwe-thermal okuphezulu, ukuzinza okuhle kakhulu kwe-thermal, ukucaciswa okuphansi. amandla adonsela phansi.

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

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℃.