Boron Nitride Ceramic Parts

Boron nitride siv lead ua belongs rau hexagonal siv lead ua, nws cov qauv zoo ib yam li graphite, thiab nws cov khoom muaj ntau yam zoo sib xws, yog li nws tseem hu ua "dawb graphite".

Boron Nitride Ceramic Parts muaj cua sov zoo, thermal stability, thermal conductivity, siab kub dielectric zog, thiab yog zoo tagnrho tshav kub dissipation cov ntaub ntawv thiab kub rwb thaiv tsev cov ntaub ntawv. Boron nitride yog tshuaj ruaj khov thiab tiv taus corrosion los ntawm feem ntau cov hlau molten. Nws kuj muaj qhov zoo ntawm tus kheej lubricating zog. Boron nitride cov khoom muaj qhov hardness tsawg thiab tuaj yeem ua haujlwm nrog qhov tseeb ntawm 1/100mm.

Zhongwei Precision tau cog lus los muab cov neeg siv khoom hauv tsev thiab txawv teb chaws nrog cov ceramics siab heev nrog lub zog siab, siab tawv, hnav tsis kam, corrosion kuj thiab kub ua haujlwm. Nws yog ib lub tuam txhab high-tech integrating R & D, ntau lawm thiab muag khoom ntawm precision siab heev ceramic khoom nyob rau hauv lub teb ntawm precision ceramics. Nrog rau ntau yam khoom siv niaj hnub high-precision, nws muaj nws tus kheej paub qhov ua tiav ntawm tag nrho cov txheej txheem ntawm cov khoom siv ceramic los ntawm ceramic hmoov npaj, ntsuab lub cev molding, kub sintering rau ceramic khoom tiav.

Khoom Destsab ntawv

1. Cov qauv kev coj ua: lub tuam txhab nruj me ntsis ua raws li ISO9001 ntawv pov thawj, thiab cov khoom tau dhau ROHS, FDA EU ntawv pov thawj, thiab lwm yam.

2. Cov qauv khoom siv: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Cov txheej txheem tseem ceeb: grouting, txhaj tshuaj molding, daim kab xev casting, isostatic nias, 3D luam ntawv

4. Muaj cov ntaub ntawv rau ceramics:

Nws tsuas yog ua tiav cov pas nrig ceramic, cov raj ceramic, cov nplhaib ceramic, cov phaj ceramic, cov khob nqus dej ceramic, cov hniav ceramic thiab lwm cov qauv tshwj xeeb zoo li ceramic. Cov ntaub ntawv ceramic tseem ceeb yog alumina, zirconia, silicon carbide, silicon nitride, thiab aluminium nitride ceramics. Kev kub siab ua haujlwm, hnav tsis kam, corrosion kuj, acid thiab alkali tsis kam, tiv thaiv magnetic, siab tsis kam. Thiab 3D luam ntawv, thiab lwm yam yog customized raws li tus neeg yuav tsum tau muaj.

Combined tube, nws siab hnav tsis kam zoo tiv thaiv cov khoom hnav thiab cuam tshuam.

Product Performance thiab Production Method

1. Cov khoom siv

CBN feem ntau yog cov xim dub, xim av lossis xim liab tsaus nrog cov qauv sphalerite thiab zoo thermal conductivity. Lub hardness yog thib ob tsuas yog pob zeb diamond, thiab nws yog ib qho khoom siv superhard uas feem ntau siv los ua cov cuab yeej siv thiab abrasive. Boron nitride yog tshuaj tiv thaiv thiab tsis tawm tsam los ntawm inorganic acids thiab dej. Lub boron-nitrogen daim ntawv cog lus yog tawg nyob rau hauv kub concentrated alkali. Tshaj 1200 degree, nws pib oxidize hauv huab cua. Lub melting point yog 3000 degree, thiab sublimation pib thaum nws qis dua 3000 degree. Decomposition pib ntawm li 2700 degree nyob rau hauv lub tshuab nqus tsev vacuum. Me ntsis soluble nyob rau hauv kub acid, insoluble nyob rau hauv dej txias, txheeb ze ntom 2.25. Lub zog compressive yog 170MPa. Qhov siab tshaj plaws ua haujlwm kub yog 900 degree hauv qhov chaw oxidizing, thiab tuaj yeem ncav cuag 2800 degree hauv qhov chaw tsis muaj zog, tab sis lub lubricating kev ua haujlwm tsis zoo ntawm chav tsev kub. Feem ntau ntawm cov khoom ntawm boron carbide zoo dua li cov ntaub ntawv carbon. Rau hexagonal boron nitride: tsawg coefficient ntawm kev sib txhuam, zoo kub stability, zoo thermal shock kuj, siab zog, siab thermal conductivity, tsis tshua muaj coefficient ntawm expansion, siab hluav taws xob resistivity, corrosion kuj, microwave los yog infrared pob tshab.

2. Cov khoom siv

Boron nitride yog lub hexagonal siv lead ua, feem ntau yog graphite lattice, thiab kuj muaj amorphous variants. Ntxiv rau daim ntawv siv lead ua hexagonal, boron carbide muaj lwm cov ntaub ntawv siv lead ua, xws li: rhombohedral boron nitride (lub npe: r-BN, los yog Said: trigonal boron nitride, nws cov qauv zoo ib yam li h-BN, uas yuav raug tsim nyob rau hauv cov txheej txheem. ntawm h-BN hloov mus rau c-BN), cubic boron nitride [abbreviation: c-BN, los yog |3-BN, los yog z -BN (uas yog, sphalerite-hom boron nitride), qhov kev ntxhib los mos yog heev nyuaj. ], wurtzite-type boron nitride (lub ntsiab lus: w-BN, h-BN yog lub xeev nyuaj hauv kev kub siab). Graphene zoo li 2D boron nitride crystals tau pom (zoo ib yam li MoS: 2D crystals).

3. Txoj kev tsim khoom

(1) Kev kub siab thiab kub siab synthesis txoj kev

Xyoo 1957, Wentorf tau tsim cov cubic BN thawj zaug. Thaum qhov kub thiab txias nyob ze los yog siab tshaj 1700 degree thiab qhov siab tshaj plaws yog 11-12GPa, lub ntshiab hexagonal boron nitride (HBN) ncaj qha hloov mus rau cubic boron nitride (CBN). Tom qab ntawd nws tau pom tias kev siv cov catalysts tuaj yeem txo qhov kev hloov pauv kub thiab siab. Feem ntau siv catalysts yog: alkali thiab alkaline ntiaj teb hlau, alkali thiab alkaline ntiaj teb nitrides, alkaline ntiaj teb fluorinated nitrides, ammonium borate ntsev thiab inorganic fluorides. Ntawm lawv, qhov kub thiab siab xav tau los ntawm ammonium borate raws li cov catalyst yog qhov qis tshaj plaws, qhov xav tau siab yog 5Gpa ntawm 1500 degree, thiab qhov kub thiab txias yog 600-700 degree thaum lub siab yog 6Gpa. Nws tuaj yeem pom tau tias txawm hais tias qhov sib ntxiv ntawm cov catalyst tuaj yeem txo qhov kev hloov pauv kub thiab siab, qhov xav tau kub thiab siab tseem tseem siab dua. Yog li, cov cuab yeej npaj los ntawm Boron Nitride Ceramic Parts yog qhov nyuaj thiab kim, thiab nws daim ntawv thov kev lag luam raug txwv.

(2) Tshuaj vapor synthesis txoj kev

Nyob rau xyoo 1979, Sokolowski tau ua tiav siv cov tshuab plasma los npaj cubic boron nitride (CBN) cov yeeb yaj kiab ntawm qhov kub thiab txias. Cov cuab yeej siv tau yooj yim thiab cov txheej txheem yooj yim kom paub, yog li nws tau tsim sai heev. Ntau yam vapor deposition txoj kev tau tshwm sim. Kev lig kev cai, nws tsuas yog hais txog thermal chemical vapor deposition. Cov cuab yeej sim no feem ntau yog tsim los ntawm cov cua kub-resistant quartz raj thiab cov khoom siv cua sov. Lub substrate tuaj yeem ua kom sov los ntawm lub qhov cub (kub phab ntsa CVD) lossis los ntawm cov cua kub ntau zaus (txias-phab ntsa CVD). Cov tshuaj tiv thaiv roj decomposes rau saum npoo ntawm qhov kub-kub substrate, thiab tib lub sijhawm, cov tshuaj tiv thaiv tshuaj tshwm sim los tso cov yeeb yaj kiab. Cov pa tshuaj tiv thaiv yog cov roj sib xyaw ntawm BCl3 lossis B2H4 thiab NH3.

(3) Hydrothermal synthesis txoj kev

Nyob rau hauv txoj kev no, nyob rau hauv qhov kub thiab kub siab tshuaj tiv thaiv ib puag ncig nyob rau hauv lub autoclave, dej yog siv raws li cov tshuaj tiv thaiv nruab nrab, thiaj li hais tias feem ntau insoluble los yog insoluble tshuaj yog yaj, thiab cov tshuaj tiv thaiv kuj yuav recrystallized. Hydrothermal thev naus laus zis muaj ob yam ntxwv, ib qho yog nws qhov kub tsis tshua muaj, thiab lwm qhov yog tias nws tau nqa tawm hauv lub thawv kaw, uas tsis txhob muaj qhov sib txawv ntawm cov khoom. Raws li qhov ntsuas kub tsis tshua muaj thiab tsis tshua muaj kev sib xyaw ua ke, nws yog siv los ua cov cubic boron nitride ntawm qhov kub thiab txias.

(4) Benzene thermal synthesis txoj kev

Raws li qhov kub thiab txias nanomaterial synthesis txoj kev tshwm sim nyob rau hauv xyoo tas los no, benzene thermal synthesis tau txais kev saib xyuas ntau. Benzene yog ib qho hnyav heev rau solvothermal synthesis vim nws cov qauv ruaj khov, uas tsis ntev los no tau ua tiav tiav rau hauv cov txheej txheem benzene thermal synthesis, xws li cov tshuaj tiv thaiv mis:

BCl3 plus Li3N → BN plus 3LiCl or BBr3 plus Li3N → BN plus 3LiBr

Cov tshuaj tiv thaiv kub tsuas yog 450 degree, thiab benzene thermal synthesis thev naus laus zis tuaj yeem npaj cov theem metastable uas feem ntau tuaj yeem npaj tau nyob rau hauv huab cua txias thiab tsuas tuaj yeem muaj nyob rau hauv ultra-siab siab ntawm qhov kub thiab siab. Txoj kev no paub txog qhov kev npaj ntawm cubic boron nitride ntawm qhov kub thiab txias. Txawm li cas los xij, txoj kev no tseem nyob rau theem kev tshawb fawb, thiab nws yog ib txoj kev siv hluavtaws uas muaj peev xwm siv tau zoo.

(5) Tus kheej-propagating technology

Lub zog sab nraud uas tsim nyog yog siv los ua kom muaj cov tshuaj tiv thaiv exothermic heev, thiab lub cev ua haujlwm hauv zos los tsim cov tshuaj tiv thaiv rau pem hauv ntej (hlawv nthwv dej). Txawm hais tias txoj kev no yog ib txoj kev siv tshuaj inorganic synthesis, nws tsuas yog tau tshaj tawm rau kev sib txuas ntawm boron nitride hauv xyoo tas los no.

(6) Carbothermal synthesis technology

Txoj kev siv boric acid ua raw khoom nyob rau saum npoo ntawm silicon carbide, carbon raws li ib tug txo tus neeg sawv cev, thiab ammonia gas nitridation kom tau boron nitride. Cov khoom tau txais muaj siab purity thiab muaj txiaj ntsig zoo rau kev npaj cov ntaub ntawv sib xyaw.

(7) Ion beam sputtering tshuab

Ib qho khoom sib xyaw ntawm cubic boron nitride thiab hexagonal boron nitride yog tau los ntawm particle beam sputtering deposition technology. Txawm hais tias txoj kev no muaj tsawg dua impurities, daim ntawv ntawm cov khoom yog ib qho nyuaj rau kev tswj vim hais tias cov tshuaj tiv thaiv tej yam kev mob yog nyuaj rau tswj, thiab kev tshawb fawb ntawm cov qauv no tseem muaj peev xwm loj hlob.

(8) Laser-induced txo txoj kev

Lub laser yog siv los ua lub zog sab nraud los ua kom muaj cov tshuaj tiv thaiv redox ntawm cov tshuaj tiv thaiv ua ntej, thiab B thiab N tau ua ke los ua boron nitride, tab sis txoj kev no kuj tau txais cov theem sib xyaw.

Txheej txheem tom qab sintering

Cov cuab yeej ua haujlwm: nruab nrog CNC engraving tshuab, tsis muaj kev sib tsoo, sab hauv thiab sab nraud cylindrical sib tsoo, nto sib tsoo, CNC tshuab dhos machining chaw, xaim txiav, tig, milling, sib tsoo thiab lwm yam khoom siv high-precision thiab kuaj.

Pwm thiab tshuaj xyuas Fixtures

1. Pwm kev pab cuam lub neej: feem ntau yog semi-permanent. (tsuas yog ua npuas ncauj ploj).

2. Pwm lub sij hawm xa tuaj: 10-25 hnub, (raws li cov qauv khoom thiab cov khoom loj).

3. Tooling thiab pwm tu: Zhongwei yog lub luag hauj lwm rau precision qhov chaw.

Kev Tswj Xyuas Zoo

1. Kev tswj kom zoo: tus nqi tsis zoo yog tsawg dua 0.1 feem pua ​​.

2. Cov qauv thiab kev sim ua haujlwm yuav raug tshuaj xyuas 100 feem pua ​​​​ntawm kev tsim khoom thiab ua ntej ua zaub mov xa tuaj, kuaj cov qauv rau ntau lawm raws li ISDO cov qauv lossis cov neeg siv khoom xav tau.

3. Cov Khoom Kuaj Ntaus: Kev ntsuas ntsuas ntsuas, peb-ntsuas ntsuas ntsuas, ntsuas ntsuas ntsuas ntsuas, micro vickers hardness teser.

Daim ntawv thov

Boron Nitride Ceramic Parts yog cov khoom siv ceramic ua los ntawm boron nitride ua raw khoom. Nws tsis tsuas yog muaj qhov kub thiab txias tsis kam, corrosion kuj, tab sis kuj muaj cua sov dissipation zoo heev thiab thermal conductivity. Nws yog ib qho khoom siv tshiab uas tau dhau los ua qhov tseem ceeb hauv lub sijhawm thaum thev naus laus zis xav tau cov khoom siv nrog cov khoom tshwj xeeb. Tom qab ntawd cia peb saib cov chaw tshwj xeeb uas siv boron nitride ceramics.

Ua ntej, raws li peb txhua tus paub, boron nitride ceramics tsis ntub dej nrog txhuas, yog li nws tuaj yeem muab kev tiv thaiv zoo heev rau qhov chaw ntawm cov ntaub ntawv uas muaj kev sib cuag ncaj qha nrog txhuas, magnesium, zinc alloys thiab lawv cov slag. Yog li ntawd, boron nitride ceramics tuaj yeem siv los ua qee cov cuab yeej txiav thiab laum cov khoom rau kev tshawb nrhiav geological thiab roj drilling. Nws tuaj yeem hais tau tias lub laum me ntsis ua los ntawm boron nitride ceramics yog qhov zoo dua li cov laum me ntsis ntawm lwm cov ntaub ntawv.

Thib ob, vim tias boron nitride ceramics muaj ntau yam duab, lawv tuaj yeem ua rau ntau yam tsim nyog, lossis ua cov khoom ntim rau kev tiv thaiv hluav taws xob neutron. Tau kawg, nws kuj yog ib qho khoom siv tshwj xeeb uas ua los ntawm boron nitride ceramics ntawm qhov kub thiab txias.

Thib peb, lub melting point ntawm boron nitride ceramics yog siab heev, thiab nws cov resistivity kuj loj heev nyob rau hauv high kub, yog li nws yog zoo heev rau siv nws los ua high-temperature insulating cov ntaub ntawv. Tsuav yog qhov yuav tsum tau siv cov ntaub ntawv kub kub, boron nitride ceramics tuaj yeem siv rau kev tsim khoom, uas tuaj yeem hais tias yog cov khoom siv zoo tshaj plaws.

Plaub, yog tias cubic boron nitride yog ua los ntawm boron nitride ceramics, nws tuaj yeem dhau los ua cov khoom siv semiconductor zoo heev, uas tuaj yeem ua lub luag haujlwm tseem ceeb hauv microelectronics lossis optoelectronics. Tsis tas li ntawd, txij li thaum boron nitride ceramics tsis soften los yog deform ntawm qhov kub thiab txias, lawv tuaj yeem siv los ua cov khoom siv kub kub.