20 ild\u0259n \u00e7ox t\u0259cr\u00fcb\u0259m olan refrakter materiallar \u00fczr\u0259 m\u00fct\u0259x\u0259ssis kimi i\u015fimd\u0259 \u00e7oxsayl\u0131 yenilikl\u0259rin g\u0259ldiyini v\u0259 getdiyini g\u00f6rm\u00fc\u015f\u0259m. Amma nitridl\u0259 birl\u0259\u015fdirilmi\u015f silikon karbid? Bu, uzun\u00f6m\u00fcrl\u00fc olanlardan biridir v\u0259 bunun \u00fc\u00e7\u00fcn kifay\u0259t q\u0259d\u0259r \u0259sas var. Temperaturlar y\u00fcks\u0259ldikd\u0259, korroziya \u015fidd\u0259tl\u0259ndikd\u0259 v\u0259 istehsal prosesi ortas\u0131nda dayanmayacaq bir \u015fey\u0259 ehtiyac duyduqda m\u00fcraci\u0259t etdiyiniz material odur. Ad\u0259t\u0259n NBSiC v\u0259 ya sad\u0259c\u0259 SiC nitrid ba\u011flanm\u0131\u015f kimi q\u0131sald\u0131lan bu istilikd\u0259n dayanan material silikon karbidin m\u00f6hk\u0259mliyini silikon nitridin ba\u011flay\u0131c\u0131 g\u00fcc\u00fc il\u0259 birl\u0259\u015fdir\u0259r\u0259k davaml\u0131, s\u0259m\u0259r\u0259li v\u0259 t\u0259\u0259cc\u00fcbl\u00fc d\u0259r\u0259c\u0259d\u0259 \u00e7ox\u015fax\u0259li m\u0259hsul yarad\u0131r. O, b\u0259lk\u0259 d\u0259 \u0259n c\u0259lbedici se\u00e7im deyil, lakin real \u015f\u0259raitd\u0259ki performans\u0131 onu metallurgiya, keramika v\u0259 dig\u0259r sah\u0259l\u0259rd\u0259 \u00e7al\u0131\u015fan m\u00fch\u0259ndisl\u0259rin sevimlisin\u0259 \u00e7evirir. G\u0259lin onun i\u015f prinsipini daha yax\u0131ndan n\u0259z\u0259rd\u0259n ke\u00e7ir\u0259k \u2014 nec\u0259 haz\u0131rland\u0131\u011f\u0131ndan tutmu\u015f \u00fcst\u00fcn oldu\u011fu sah\u0259l\u0259r\u0259 v\u0259 diqq\u0259t etm\u0259li oldu\u011funuz \u00e7at\u0131\u015fmazl\u0131qlara q\u0259d\u0259r. \u018fg\u0259r y\u00fcks\u0259k istilik \u015f\u0259raiti \u00fc\u00e7\u00fcn material se\u00e7irsinizs\u0259, bu, sizin \u00fc\u00e7\u00fcn do\u011fru se\u00e7im olub-olmad\u0131\u011f\u0131na q\u0259rar verm\u0259y\u0259 k\u00f6m\u0259k ed\u0259c\u0259k.<\/p>\n
<\/p>\n
Nitridl\u0259 birl\u0259\u015fdirilmi\u015f silisium karbidin \u0259sas\u0131 onun xam komponentl\u0259rind\u0259 v\u0259 onlar\u0131n a\u011f\u0131ll\u0131 \u015f\u0259kild\u0259 birl\u0259\u015fdirilm\u0259si \u00fcsulunda yat\u0131r. H\u0259r \u015fey klassik Acheson prosesi il\u0259 istehsal olunan silisium karbid d\u0259n\u0259cikl\u0259ri il\u0259 ba\u015flay\u0131r: silisli qum v\u0259 karbon qar\u0131\u015f\u0131\u011f\u0131n\u0131 elektrik q\u00f6vs sobas\u0131nda 2000\u00b0C-d\u0259n yuxar\u0131 ekstremal temperaturda q\u0131zd\u0131rmaq. Bu, davaml\u0131l\u0131\u011f\u0131 il\u0259 tan\u0131nan s\u0259rt, kristal SiC hiss\u0259cikl\u0259rini yarad\u0131r. Onlar\u0131 birl\u0259\u015fdirm\u0259k \u00fc\u00e7\u00fcn istehsal\u00e7\u0131lar silikon tozu \u0259lav\u0259 edir v\u0259 qar\u0131\u015f\u0131\u011f\u0131 bloklar v\u0259 ya borular kimi formalar hal\u0131nda formala\u015fd\u0131r\u0131rlar. Sonra \u0259sas m\u0259rh\u0259l\u0259 g\u0259lir \u2014 1400\u20131500 \u00b0C temperaturda azot atmosferind\u0259 bi\u015firm\u0259. Burada silikon azotla reaksiya ver\u0259r\u0259k silikon nitritini (Si3N4) \u0259m\u0259l\u0259 g\u0259tirir ki, bu da inc\u0259 kristal \u015f\u0259b\u0259k\u0259 \u015f\u0259klind\u0259 b\u00f6y\u00fcy\u0259r\u0259k SiC d\u0259n\u0259cikl\u0259rini yerind\u0259 b\u0259rkidir. N\u0259tic\u0259d\u0259 h\u0259cmind\u0259 80% v\u0259 ya daha \u00e7oxu SiC-d\u0259n ibar\u0259t, nitrit is\u0259 g\u00fccl\u00fc, vahid ba\u011flay\u0131c\u0131 rolunu oynayan kompozit yaran\u0131r. \u018flav\u0259 yap\u0131\u015fd\u0131r\u0131c\u0131lar v\u0259 ya gil laz\u0131m deyil, bu da material\u0131 saf v\u0259 y\u00fcks\u0259k performansl\u0131 saxlay\u0131r. Mikrostrukturu ara\u015fd\u0131rsan\u0131z, olduqca maraql\u0131d\u0131r: Si3N4 uzunsov t\u00fckl\u0259r \u015f\u0259klind\u0259 blokvari SiC kristallar\u0131 il\u0259 dola\u015f\u0131b, s\u0131x, lakin n\u0259zar\u0259tli g\u00f6zeneklilikli bir matris yarad\u0131r.<\/p>\n
X\u00fcsusiyy\u0259tl\u0259r bax\u0131m\u0131ndan bu material bir ne\u00e7\u0259 kritik sah\u0259d\u0259 g\u00fccl\u00fc performans g\u00f6st\u0259rir. \u0130stilik bax\u0131m\u0131ndan o, oksidl\u0259\u015fdirici \u015f\u0259raitd\u0259 1650\u00b0C-y\u0259 q\u0259d\u0259r i\u015f temperaturlar\u0131na d\u00f6z\u0259 bilir, reduktiv m\u00fchitl\u0259rd\u0259 is\u0259 b\u0259z\u0259n daha y\u00fcks\u0259k temperaturlara. Havaya m\u0259ruz qald\u0131qda s\u0259thind\u0259 qoruyucu silika filmi \u0259m\u0259l\u0259 g\u0259lir v\u0259 onu daha da par\u00e7alanmaqdan qoruyur. Onun istilik ke\u00e7iriciliyi d\u0259 diqq\u0259t\u0259layiqdir \u2014 ad\u0259t\u0259n 20\u201340 Vt\/m\u00b7K \u2014 bu, istiliyin b\u0259rab\u0259r paylanmas\u0131n\u0131 t\u0259l\u0259b ed\u0259n t\u0259tbiql\u0259r, m\u0259s\u0259l\u0259n, isitm\u0259 elementl\u0259ri \u00fc\u00e7\u00fcn ideald\u0131r. T\u0259xmin\u0259n 4,0 \u00d7 10\u207b\u2076 \u00b0C\u207b\u00b9 olan istilik gen\u0259lm\u0259 \u0259msal\u0131 il\u0259 o, s\u00fcr\u0259tli istil\u0259\u015fm\u0259 v\u0259 soyutma d\u00f6vrl\u0259rinin g\u0259rginliyin\u0259 davam g\u0259tirir ki, bu da daha q\u0131r\u0131q olan variantlar\u0131 par\u00e7alayard\u0131. Mexaniki bax\u0131mdan s\u0131x\u0131lma m\u00f6hk\u0259mliyi tez-tez 200 MPa-dan \u00e7ox olur v\u0259 a\u015f\u0131nma m\u00fcqavim\u0259ti SiC-nin almazla m\u00fcqayis\u0259 edil\u0259c\u0259k q\u0259d\u0259r y\u00fcks\u0259k s\u0259rtlik s\u0259viyy\u0259si say\u0259sind\u0259 \u0259n y\u00fcks\u0259k s\u0259viyy\u0259d\u0259dir. M\u0259n n\u00fcmun\u0259l\u0259rin al\u00fcminan\u0131n brikl\u0259rini yar\u0131 vaxtda a\u015f\u0131nd\u0131racaq t\u0259qlid edilmi\u015f c\u00fcruf ax\u0131nlar\u0131na d\u00f6z\u00fcml\u00fcl\u00fcy\u00fcn\u00fc yoxlam\u0131\u015fam.<\/p>\n
Sonra kimy\u0259vi davaml\u0131l\u0131q var. Nitridl\u0259 birl\u0259\u015fdirilmi\u015f SiC tur\u015fular, q\u0259l\u0259vil\u0259r, \u0259ridilmi\u015f metallar v\u0259 duzlar kimi geni\u015f \u00e7e\u015fidli aqressiv m\u00fchitl\u0259r\u0259 qar\u015f\u0131 m\u00fcqavim\u0259t g\u00f6st\u0259rir. M\u0259s\u0259l\u0259n, al\u00fcminium \u0259ridilm\u0259si zaman\u0131 o, dig\u0259r refrakterl\u0259ri korlayan fluorid h\u00fccumlar\u0131n\u0131 d\u0259f edir. Material\u0131n s\u0131xl\u0131\u011f\u0131 2,7\u20133,1 q\/sm\u00b3 aras\u0131nda d\u0259yi\u015fir, bu da onu bir \u00e7ox s\u0131x keramikalardan y\u00fcng\u00fcl edir v\u0259 iri strukturlarda qura\u015fd\u0131rman\u0131 asanla\u015fd\u0131r\u0131r. Porositet ad\u0259t\u0259n 10\u201320 faiz aras\u0131nda d\u0259yi\u015fir, bu da b\u00fct\u00f6vl\u00fcy\u00fc z\u0259ifl\u0259tm\u0259d\u0259n m\u00fc\u0259yy\u0259n qaz ax\u0131n\u0131na imkan verir. Lakin 1400 \u00b0C-d\u0259n yuxar\u0131 r\u00fctub\u0259tli, y\u00fcks\u0259k temperaturlu \u015f\u0259raitd\u0259 nitrit fazas\u0131n\u0131n hidroliz\u0259 m\u0259ruz qala bil\u0259c\u0259yini v\u0259 n\u0259tic\u0259d\u0259 par\u00e7alanmaya s\u0259b\u0259b ola bil\u0259c\u0259yini qeyd etm\u0259k vacibdir. Bel\u0259likl\u0259, \u0259traf m\u00fchit amill\u0259ri onun \u00f6mr\u00fcn\u0259 b\u00f6y\u00fck t\u0259sir g\u00f6st\u0259rir.<\/p>\n
T\u0259tbiql\u0259r\u0259 g\u0259ldikd\u0259, nitridl\u0259 birl\u0259\u015fdirilmi\u015f SiC u\u011fursuzlu\u011fun yol verilm\u0259diyi m\u00fchitl\u0259rd\u0259 parlay\u0131r. Polad s\u0259nayesind\u0259 o, \u0259sas\u0259n intensiv isti v\u0259 mexaniki z\u0259rb\u0259l\u0259r\u0259 m\u0259ruz qalan a\u015fa\u011f\u0131 baca v\u0259 soba zonalar\u0131nda partlay\u0131c\u0131 soba astarlar\u0131n\u0131n \u0259sas komponentidir. Bir d\u0259f\u0259 yenid\u0259n \u00f6rtm\u0259 i\u015find\u0259 m\u0259sl\u0259h\u0259t vermi\u015fdim; SiC istifad\u0259si kampaniyan\u0131n m\u00fcdd\u0259tini 8 aydan 2 ild\u0259n \u00e7oxa uzadaraq x\u0259rcl\u0259ri \u0259h\u0259miyy\u0259tli d\u0259r\u0259c\u0259d\u0259 azaltd\u0131. Mis v\u0259 ya sink kimi qeyri-d\u0259mir metallar \u00fc\u00e7\u00fcn o, crucible qazanlar\u0131nda, boru \u00e7\u0131x\u0131\u015flar\u0131nda v\u0259 \u0259rint\u0131 kanallar\u0131nda istifad\u0259 olunur; s\u0259thi asanl\u0131qla n\u0259m tutmur, buna g\u00f6r\u0259 metal yap\u0131\u015fm\u0131r v\u0259 t\u0131xanmalara s\u0259b\u0259b olmur. Keramika istehsal\u0131nda is\u0259 soba r\u0259fl\u0259ri v\u0259 dayaqlar\u0131 kimi xidm\u0259t edir, t\u0259krar bi\u015firm\u0259l\u0259r\u0259 davam g\u0259tir\u0259r\u0259k \u00e7\u00f6km\u00fcr.<\/p>\n
\u018fn\u0259n\u0259vi istehsal xaricind\u0259 onu tullant\u0131lar\u0131 enerjiy\u0259 \u00e7evir\u0259n, yand\u0131rma sobalar\u0131n\u0131 korroziy t\u00fcst\u00fc \u0259leyhin\u0259 \u00f6rt\u0259n zavodlarda v\u0259 ya reaktiv madd\u0259l\u0259rl\u0259 i\u015fl\u0259y\u0259n qablar \u00fc\u00e7\u00fcn kimy\u0259vi emalda tapacaqs\u0131n\u0131z. Son zamanlar sintiqaz reaktorlar\u0131 v\u0259 ya g\u00fcn\u0259\u015f konsentrat\u00f6rl\u0259ri kimi qabaqc\u0131l enerji sisteml\u0259rind\u0259 g\u00f6r\u00fcn\u00fcr. Formala\u015fd\u0131r\u0131lmas\u0131 \u00e7evikdir \u2013 standart k\u0259rpicl\u0259r\u0259 v\u0259 ya x\u00fcsusi formalara s\u0131x\u0131l\u0131r, \u00f6l\u00e7\u00fcl\u0259ri is\u0259 geni\u015f d\u0259yi\u015fir. Qura\u015fd\u0131rma zaman\u0131 \u0259n yax\u015f\u0131 n\u0259tic\u0259 \u00fc\u00e7\u00fcn SiC-\u0259 uy\u011fun har\u00e7larla birl\u0259\u015fdirin. Qiym\u0259ti? \u018fsas odadavaml\u0131 k\u0259rpicl\u0259rd\u0259n baha ba\u015fa g\u0259lir, kiloqram\u0131 t\u0259xmin\u0259n $5\u201310, lakin y\u00fcks\u0259k a\u015f\u0131nma n\u00f6qt\u0259l\u0259rind\u0259 azald\u0131lm\u0131\u015f texniki xidm\u0259t x\u0259rcl\u0259ri say\u0259sind\u0259 \u00f6z\u00fcn\u00fc tez \u00f6d\u0259yir.<\/p>\n
\u018flb\u0259tt\u0259 ki, h\u0259r hans\u0131 material kimi onun da m\u0259hdudiyy\u0259tl\u0259ri var. \u0130stehsal prosesi d\u0259qiqlik t\u0259l\u0259b edir; \u0259g\u0259r nitritl\u0259\u015fm\u0259 tam ba\u015fa \u00e7atmasa, z\u0259if, asanl\u0131qla s\u0131radan \u00e7\u0131xan sah\u0259l\u0259r yaranacaq. \u018fll\u0259 i\u015fl\u0259m\u0259 v\u0259 emal toz \u0259m\u0259l\u0259 g\u0259tirir ki, bu da sa\u011flaml\u0131q \u00fc\u00e7\u00fcn t\u0259hl\u00fck\u0259dir \u2013 potensial karsinogen \u2013, ona g\u00f6r\u0259 d\u0259 h\u0259mi\u015f\u0259 d\u00fczg\u00fcn toz n\u0259zar\u0259ti v\u0259 qoruyucu avadanl\u0131q t\u0259l\u0259b edin. Ekoloji bax\u0131mdan, onun istehsal\u0131 \u00e7ox enerji t\u0259l\u0259b edir, lakin t\u0259krar emalda \u0259ld\u0259 olunan ir\u0259lil\u0259yi\u015fl\u0259r k\u00f6m\u0259k edir: b\u0259zi m\u00fc\u0259ssis\u0259l\u0259r k\u00f6hn\u0259 astarlardan 60\u201370% SiC b\u0259rpa edir. G\u0259l\u0259c\u0259k inki\u015faflar q\u0131r\u0131qlanmaya qar\u015f\u0131 daha y\u00fcks\u0259k m\u00fcqavim\u0259t \u00fc\u00e7\u00fcn \u0259lav\u0259 lifl\u0259rl\u0259 g\u00fccl\u0259ndirilmi\u015f variantlar\u0131, h\u0259tta tullant\u0131lar\u0131 minimuma endirm\u0259k \u00fc\u00e7\u00fcn 3D \u00e7ap olunmu\u015f hiss\u0259l\u0259ri \u0259hat\u0259 edir.<\/p>\n
N\u0259tic\u0259 etibaril\u0259, nitritl\u0259 birl\u0259\u015fdirilmi\u015f silikon karbid sad\u0259c\u0259 ba\u015fqa bir istilikd\u0259n davaml\u0131 material deyil \u2013 o, \u0259n \u00e7\u0259tin termal v\u0259 kimy\u0259vi probleml\u0259ri h\u0259ll etm\u0259kd\u0259 s\u00fcbut olunmu\u015f m\u00fctt\u0259fiqdir. Sah\u0259d\u0259ki t\u0259cr\u00fcb\u0259m\u0259 \u0259sas\u0259n, bu se\u00e7im tez-tez k\u0259nar \u0259m\u0259liyyatlar\u0131 s\u0259m\u0259r\u0259li \u0259m\u0259liyyatlara \u00e7evirir, m\u0259s\u0259l\u0259n, o al\u00fcminium zavodunda \u0259rint\u0131 qab\u0131n\u0131n \u00f6mr\u00fcn\u00fc iki d\u0259f\u0259 art\u0131rd\u0131. \u018fg\u0259r onu n\u0259z\u0259rd\u0259n ke\u00e7irirsinizs\u0259, \u015f\u0259rtl\u0259rinizi diqq\u0259tl\u0259 qiym\u0259tl\u0259ndirin \u2014 temperatur diapazonlar\u0131, kimy\u0259vi t\u0259sirl\u0259r, mexaniki g\u0259rginlikl\u0259r \u2014 v\u0259 ASTM C863 kimi m\u00fcvafiq standartlar\u0131 yoxlay\u0131n. Detallar \u00fc\u00e7\u00fcn Saint-Gobain v\u0259 ya ESK Ceramics kimi tan\u0131nm\u0131\u015f istehsal\u00e7\u0131larla \u0259laq\u0259 saxlay\u0131n. Davaml\u0131 s\u0259naye istiqam\u0259tind\u0259 bu g\u00fcn bu c\u00fcr materiallar etibarl\u0131l\u0131\u011f\u0131 daha b\u00f6y\u00fck ir\u0259lil\u0259yi\u015f potensial\u0131 il\u0259 birl\u0259\u015fdir\u0259r\u0259k a\u00e7ar rolunu oynay\u0131r.<\/p>","protected":false},"excerpt":{"rendered":"
Nitride Bonded Silicon Carbide: A Stalwart in the Face of Industrial Extremes In my line of work as a refractory materials expert with over 20 years under my belt, I’ve seen a lot of innovations come and go. But nitride bonded silicon carbide? That’s one that has stuck around, and for good reason. It’s the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-49","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/posts\/49","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/comments?post=49"}],"version-history":[{"count":3,"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/posts\/49\/revisions"}],"predecessor-version":[{"id":52,"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/posts\/49\/revisions\/52"}],"wp:attachment":[{"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/media?parent=49"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/categories?post=49"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nitridebondedsic.com\/az\/wp-json\/wp\/v2\/tags?post=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}