Muaj ntau qhov chaw ntawm cov khoom sib tsoo uas feem ntau peb pom yog ci iab thiab txawm muaj ib daim iav tsom, uas yog vim muaj lub zeem muag ntawm lub teeb.
Thiaj xav tshwm sim thaum lub teeb mus txog ntawm qhov khoom. Kev xav yog faib ua cov qauv kev xav, qhov kev xav thiab kev xav ntawm kev coj.
1. Kev qhia meej yog: Yog tias qhov khoom ntawm qhov tsis zoo yog qhov sib txawv, qhov sib txawv ntawm lub teeb pom kev zoo yog thaum nws yog ib qho teeb meem ntawm ib qhov chaw saum npoo. Qhov kev xav no yog hu ua specular reflection.
2. Diffuse reflection: Yog hais tias cov nplaim ntawm lub nruas yog ntxhib, cov duab sib npaug parallel yog teeb meem ntawm qhov tsis sib npaug, thiab lub teeb pom los ntawm cov lus qhia. Qhov kev xav no yog hu ua diffuse xav txog.
3. Qhov kev xav ntawm txoj kev xav: Qhov kev xav ntawm qhov sib txawv ntawm qhov sib txawv thiab kev xav meej yog qhov hu ua directional reflection, tseem hu ua non-Lambertian xav txog, uas yog reflected nyob rau hauv tag nrho cov lus qhia, thiab qhov siv ntawm txhua tus xav txog yog tsis teeb.
Nws tuaj yeem pom los ntawm cov saum toj no hais tias qhov zoo tshaj plaws uas txiav txim siab seb cov nplai ntawm cov sib tsoo pob muaj lub teeb ci yog qhov sib luag ntawm lub ntsej muag kheej; qhov smoother lub ntsej muag spherical, qhov zoo dua daim iav nyhuv; lub rougher lub ntsej muag spherical, lub zuj zus daim iav cov nyhuv. Muaj ntau ntau yam cuam tshuam txog qhov smoothness ntawm lub ntsej muag spherical, uas tau raug muab faib ua: lub qauv ntawm cov khoom siv thiab cov neeg kawm tiav ntawm sab nraud. Ntawm lawv, cov ntse sab nrauv ua tau yooj yim to taub, piv txwv li, lub sib tsoo pob tom qab sintering, lub ntsej muag kheej yog matte, thiab kheej kheej kheej muaj qhov tshwm sim tom qab polishing. Lub qauv ntawm cov ntaub ntawv muaj xws li: pores, grain loj, kua theem, thiab lwm yam., Thiab lawv cov teebmeem ntawm kev sib haum xeeb kheej kheej yog li nram qab no:
Stomata
Txij li thaum cov khoom sib tsoo tom qab sintering yog feem ntau heev densified, qhov pores los ntawm sintering yog ob peb, yog li ntawm qhov pores peb xa mus rau ntawm no feem ntau yog xa cov teeb meem loj tshwm sim los ntawm molding thiab cov zoo li.
Piv txwv, lub hmoov rau cov khoom tawg yog muaj cua ntws hmoov, hmoov tsuag hmoov qhuav, hmoov av hmoov, thiab lwm yam, uas yog cov pseudo-particles yeej zoo li ntawm ntau tus neeg siv lead ua nplej. Txawm li cas los xij, vim lub txheej txheem milling sib txawv, lub zog ntawm qhov hmoov ntawm lub hmoov tsis zoo li qub. Hauv kev siv, qee qhov kev phais yuav tsis tag nrho cov crushed, uas ua rau cov qoob tsis tau tag nrho thaum lub sij hawm sintering, ua teeb meem xws li atmospheric pores.
Lis loj
Thaum twg cov hom ntaub ntawv raw sib txawv, lub degree ntawm kev sib tsoo ntawm cov khoom raw los ntawm cov khw muag khoom txawv, thiab qhov sib txawv ntawm cov qauv thiab cov hluav taws xob, cov khoom loj ntawm cov khoom sib tsoo tom qab sintering sib txawv. Lub nplua nuj lub noob taum, lub khav theeb; lub thicker grain, tsawg tsis sib npaug ntawm tus kheej, zoo li paving nrog pob zeb thiab paving nrog xuab zeb.
Feem ntau ntawm cov zirconia sib tsoo npas yog 0.3um-0.5um, alumina nplej yog feem ntau 1um-5um, zirconia nplej yog finer, thiab kheej kheej kheej siab dua, ces zirconia spherical nto yog zog dua lub alumina spherical nto.
Ua kua theem
Siv alumina ceramics ua piv txwv, thiaj li yuav txo tau cov sintering ntawm ceramics ntau zus, qee cov additives ntxiv. Qee yam ntawm lawv yog cov peev xwm tsim cov dej ua kua hauv high-alloy porcelain, xws li kaolin, boehmite, silica fume, thiab lwm yam, uas nrog rau lwm cov neeg tuaj yeem tuaj yeem ua tau binary, ternary los yog ntau txoj ua qis-melting co-melts. Tom qab ntxiv ib qho tsim nyog ntawm admixture, ntawm ib sab tes, qhov kub sintering ntawm ceramic yuav txo qis kom cov crystal nplej me me; ntawm qhov tod tes, cov kua ua rau theem ntawm lwm sab tes kuj yuav zoo li lub paving asphalt, kom lub ntsej muag spherical yog flatter thiab spherical nto yog qhov kaj. Nws yog.
