Boron Nitride Cov Khoom Siv Cov Khoom Siv, Boron Nitride Cov Khoom Siv Ceramic

Boron nitride ceramics yog ua los ntawm boron nitride hmoov los ntawm kev nias kub thiab ua kom sov ntawm qhov kub siab, thiab tom qab ntawv ua tiav raws li qhov loj me thiab qhov tshwj xeeb xav tau los ntawm cov neeg siv khoom.

Boron nitride, tseem hu ua dawb graphite, zoo ib yam li graphite hauv cov qauv, koom nrog daim ntawv hexagonal qauv, qhov xav tau ceev ntawm 2.27g/cm3, Mohs hardness ntawm 2. Cov hluav taws xob zoo, thermal conductivity, zoo heev kub poob siab tsis kam, tshuaj lom neeg ruaj khov , thiab cov dej tsis kam tiv taus cov hlau yaj, slag thiab iav.

Boron nitride ceramics muaj cov cuab yeej ua tau zoo heev thiab tuaj yeem ua lub ntsej muag zoo ib yam raws li cov neeg siv khoom xav tau.

Boron nitride ceramics tiv taus cov kua qaub thiab alkali xeb thiab muaj hluav taws xob rwb thaiv tsev zoo, thiab hluav taws xob tsis kam tiv taus yog 3-4 zaug ntawm alumina.

Boron nitride ceramics muaj qhov kub zoo tiv taus, txog li 1800 ℃ hauv lub tshuab nqus tsev thiab 2100 ℃ nyob rau hauv kev tiv thaiv nitrogen.

Boron nitride ceramics tiv taus cov cua sov thiab yuav tsis tawg hauv 1500 ℃ quench lossis 20 feeb hauv 1000 ℃ rauv tom qab raug tshem tawm ntawm huab cua thiab txias tas mus li ntau pua zaus.

Boron nitride ceramics thiab ntau yam hlau, ceramics, cov khoom siv hauv ntiaj teb tsis tshua muaj tshwm sim, tsis txhob sib xyaw. Xws li hlau hlau, hlau, tooj liab, stainless hlau, bismuth, txhuas, tin, chromium, txhuas, npib tsib xee, magnesium thiab lwm yam; Iav yaj, iav sodium, cryolite, thiab lwm yam. Silicon lava: slag, fluoride, thiab lwm yam, tuaj yeem siv ua cov ntim, crucible, hlawv phaj, thiab lwm yam.

Ceev faj rau kev siv cov boron nitride ceramics

1. Qhov kub hauv huab cua yuav tsum tsis pub tshaj 1000 ℃. Qhov saum npoo ntawm boron nitride nyob rau hauv kev sib cuag nrog cov pa yuav oxidize thiab flake tawm.

2. Boron nitride nqus dej tau yooj yim. Crucible yuav tsum tsis txhob muab khaws cia rau hauv qhov chaw ntub thiab yuav tsum tsis txhob yaug nrog dej, tab sis tuaj yeem so ncaj qha nrog cov ntawv xuab zeb lossis so nrog cawv.