Carbide ndi kukonzekera cermet

WC-Co hard alloys ali ndi ma microwave osinthika bwino.Munthawi ya sintering, njira zotayika zomwe zimagwira ntchito m'malo otentha kwambiri zimakhala kutayika kwa polarization ndi kutayika kwa maginito, pomwe m'malo otentha kwambiri aloyi imatenga mphamvu ya microwave.Makamaka mu mawonekedwe a dielectric imfa ndi conductivity imfa.

Thealoyindi kuwonjezera kwa 0.4% VC ndi 0.2% Cr3C2 (gawo la misa) monga zipangizo zothandizira zimakhala ndi ntchito yabwino kwambiri;kugwiritsa ntchito vacuum microwave sintering kumathandizira kwambiri magwiridwe antchito a aloyi.Kugwiritsa ntchito ma multicavity microwave sinteringWC-8Co, imatenthedwa pa 1400 ° C popanda kusunga kutentha.Kachulukidwe amatha kufika 14.71g/cmHRA imafika90.3, ndipo kapangidwe kake ndi kofanana.

Ukadaulo wa microwave sintering ukhoza kugwiritsidwa ntchito pokonzekera ma cermets abwino kwambiri okhala ndi njere zabwino, mawonekedwe ofananirako komanso magwiridwe antchito abwino kwambiri.Pamene kutentha kwa sintering kumawonjezeka, kuchepa, kachulukidwe, mphamvu zowonongeka ndi kuuma kwa ma cermets a ultra-fine amayamba kuwonjezereka ndiyeno kuchepa, ndi mtengo wapamwamba ukuwonekera pa 1500 ° C;Njira yoyenera yopangira ma microwave sintering ma cermets apamwamba kwambiri Pambuyo pa kusungidwa pa 1500 ° C kwa mphindi 30, mphamvu zosunthika ndi zolimba ndizo 1547MPa ndi 90.6HRA motsatana, zomwe zimachulukitsidwa ndi 24.0% ndi 0.7% motsatana poyerekeza ndi sintering wamba.