Bilirs\u0259n, refrakterl\u0259r sah\u0259sind\u0259 iyirmi ild\u0259n \u00e7ox \u00e7al\u0131\u015f\u0131b, y\u00fcks\u0259k istiliy\u0259 v\u0259 s\u0259rt \u015f\u0259rait\u0259 davam g\u0259tirm\u0259li m\u00fcxt\u0259lif materiallarla s\u0131naq aparandan sonra nitridl\u0259 birl\u0259\u015fdirilmi\u015f silikon karbid\u0259 h\u0259qiqi qiym\u0259t verdim. Bu, TED m\u00fchazir\u0259l\u0259rind\u0259 dan\u0131\u015f\u0131lan parlaq texnologiya deyil, amma fabrikl\u0259rin v\u0259 m\u00fc\u0259ssis\u0259l\u0259rin g\u00fcnd\u0259lik \u00e7\u0259tinlikl\u0259rind\u0259 can xilaskar\u0131na \u00e7evrilir. Bu material silisium karbidin m\u00f6hk\u0259mliyini, onu daha da dayan\u0131ql\u0131 ed\u0259n nitrit ba\u011flay\u0131c\u0131 il\u0259 birl\u0259\u015fdirir v\u0259 ekstremal m\u00fchitl\u0259rl\u0259 m\u0259\u015f\u011ful olan h\u0259r k\u0259s \u00fc\u00e7\u00fcn \u0259sas materiala \u00e7evrilib. M\u0259nim xo\u015fuma g\u0259l\u0259n c\u0259h\u0259t odur ki, o, probleml\u0259ri \u00e7ox s\u0259s-k\u00fcy olmadan h\u0259ll edir \u2013 daha uzun\u00f6m\u00fcrl\u00fc astarlar, az dayanma vaxt\u0131 v\u0259 s. Bu m\u0259qal\u0259d\u0259 siz\u0259 onun t\u0259rkibini, \u0259sas \u00fcst\u00fcnl\u00fckl\u0259rini, harada istifad\u0259 olundu\u011funu v\u0259 sah\u0259d\u0259 g\u00f6rd\u00fcy\u00fcm bir ne\u00e7\u0259 diqq\u0259t edilm\u0259li m\u0259qam\u0131 izah ed\u0259c\u0259y\u0259m. \u018fg\u0259r y\u00fcks\u0259k istilik \u015f\u0259raiti \u00fc\u00e7\u00fcn qur\u011fular \u00fczr\u0259 variantlar\u0131 n\u0259z\u0259rd\u0259n ke\u00e7ir\u0259n m\u00fch\u0259ndis v\u0259 ya texnikisinizs\u0259, bu, siz\u0259 faydal\u0131 g\u00f6st\u0259ri\u015fl\u0259r ver\u0259 bil\u0259r.<\/p>\n
<\/p>\n
\u018fsaslardan ba\u015flayaq: nitridl\u0259 birl\u0259\u015fdirilmi\u015f SiC nec\u0259 yaran\u0131r. \u018fsas t\u0259rkib hiss\u0259si Acheson prosesind\u0259n \u0259ld\u0259 olunan silisium karbid, y\u0259ni SiC-dir. Burada silisli qum v\u0259 karbohidrogeni b\u00f6y\u00fck elektrik sobas\u0131nda t\u0259xmin\u0259n 2000 d\u0259r\u0259c\u0259 Selsi v\u0259 ya daha y\u00fcks\u0259k temperaturda \u0259ridib, n\u0259tic\u0259d\u0259 bu s\u0259rt SiC kristallar\u0131 al\u0131n\u0131r. Onlar \u00e7ox m\u00f6hk\u0259mdir. Ba\u011fl\u0131 versiyan\u0131 haz\u0131rlamaq \u00fc\u00e7\u00fcn bu SiC d\u0259n\u0259cikl\u0259rini silikon tozu il\u0259 qar\u0131\u015fd\u0131r\u0131b laz\u0131m olan formaya \u2013 k\u0259rpic, l\u00f6vh\u0259, b\u0259lk\u0259 d\u0259 boru \u2013 sal\u0131rs\u0131n\u0131z. Sonra onu azotla dolu m\u00fchitd\u0259, t\u0259xmin\u0259n 1400\u20131500 \u00b0C-d\u0259 bi\u015firirsiniz. Silikon azotla birl\u0259\u015fib silikon nitritin\u0259, Si3N4-\u0259 \u00e7evrilir v\u0259 h\u0259r \u015feyi yerind\u0259 saxlayan bu ba\u011flay\u0131c\u0131 \u015f\u0259b\u0259k\u0259ni \u0259m\u0259l\u0259 g\u0259tirir. \u018fsas\u0259n SiC-d\u0259n ibar\u0259tdir, m\u0259s\u0259l\u0259n, t\u0259xmin\u0259n 85%, nitrid is\u0259 bo\u015fluqlar\u0131 doldurur. Mikroskop alt\u0131nda baxsan\u0131z, iyn\u0259 formal\u0131 nitrid kristallar\u0131n\u0131n SiC hiss\u0259cikl\u0259rini b\u00fcr\u00fcd\u00fcy\u00fcn\u00fc g\u00f6r\u0259c\u0259ksiniz; bu, m\u00f6hk\u0259m, amma \u00e7ox q\u0131r\u0131qlanmayan bir struktur yarad\u0131r. Y\u00fcks\u0259k temperaturda yanaraq yox ola bil\u0259c\u0259k \u0259lav\u0259 ba\u011flay\u0131c\u0131lara ehtiyac qalm\u0131r ki, bu da xo\u015f bir c\u0259h\u0259tdir.<\/p>\n
\u0130ndi is\u0259 onun bu q\u0259d\u0259r yax\u015f\u0131 performans g\u00f6st\u0259rm\u0259sinin s\u0259b\u0259bin\u0259 ke\u00e7\u0259k. Termik c\u0259h\u0259td\u0259n bu material a\u011f\u0131r \u015f\u0259rait\u0259 d\u00f6z\u0259 bilir \u2014 havada 1650\u00b0C-y\u0259 q\u0259d\u0259r, b\u0259z\u0259n is\u0259 reduktiv atmosferd\u0259 daha y\u00fcks\u0259k temperaturlara. Oksidl\u0259\u015fdikd\u0259 s\u0259thind\u0259 silika qatar\u0131 \u0259m\u0259l\u0259 g\u0259lir ki, bu da \u0259lav\u0259 z\u0259r\u0259r\u0259 qar\u015f\u0131 qalxan rolunu oynay\u0131r. \u0130stilik ke\u00e7iriciliyi kifay\u0259t q\u0259d\u0259r yax\u015f\u0131d\u0131r, metr-Kelvin ba\u015f\u0131na 20\u201340 vatt aras\u0131nda, buna g\u00f6r\u0259 istilik m\u00fcbadil\u0259\u00e7il\u0259ri kimi qur\u011fularda istilik ax\u0131n\u0131n\u0131 problemsiz idar\u0259 edir. Gen\u0259lm\u0259 \u0259msal\u0131 a\u015fa\u011f\u0131d\u0131r, t\u0259xmin\u0259n h\u0259r C\u00b0 \u00fc\u00e7\u00fcn 4\u00d710\u207b\u2076, y\u0259ni temperatur k\u0259skin d\u0259yi\u015fdikd\u0259 asanl\u0131qla \u00e7atlam\u0131r. Mexaniki c\u0259h\u0259td\u0259n g\u00fccl\u00fcd\u00fcr \u2014 s\u0131x\u0131lma m\u00f6hk\u0259mliyi 200 meqapaskaldan \u00e7oxdur \u2014 v\u0259 a\u015f\u0131nmaya son d\u0259r\u0259c\u0259 davaml\u0131d\u0131r, \u00e7\u00fcnki SiC dem\u0259k olar ki, almaz q\u0259d\u0259r s\u0259rtdir. M\u0259n n\u00fcmun\u0259l\u0259ri \u0259riy\u0259n c\u00fcrufla eroziya testl\u0259rind\u0259n ke\u00e7irmi\u015f\u0259m v\u0259 onlar al\u00fcminadan haz\u0131rlanm\u0131\u015f n\u00fcmun\u0259l\u0259rd\u0259n qat-qat yax\u015f\u0131 v\u0259ziyy\u0259td\u0259 \u00e7\u0131x\u0131blar.<\/p>\n
Kimy\u0259vi bax\u0131mdan da o, \u00e7empiondur. Tur\u015fular, q\u0259l\u0259vil\u0259r, \u0259ridilmi\u015f metallar \u2013 onu \u00e7ox da narahat etmir. Al\u00fcminium i\u015fl\u0259rind\u0259 o, dig\u0259r refrakterl\u0259ri canl\u0131-canl\u0131 yey\u0259n fluoridl\u0259r\u0259 qar\u015f\u0131 dayan\u0131ql\u0131d\u0131r. S\u0131xl\u0131\u011f\u0131 kub santimetr\u0259 t\u0259xmin\u0259n 2,7\u20133,1 qram aras\u0131ndad\u0131r, ona g\u00f6r\u0259 d\u0259 \u00e7ox a\u011f\u0131r deyil, porozlu\u011fu is\u0259 10\u201320 faiz t\u0259\u015fkil edir ki, bu da par\u00e7alanmadan bir q\u0259d\u0259r n\u0259f\u0259s almas\u0131na imkan verir. Amma x\u0259b\u0259rdarl\u0131q: \u0259g\u0259r 1400 \u00b0C-d\u0259n yuxar\u0131 buxarl\u0131 m\u00fchitd\u0259 olsan\u0131z, nitrid su il\u0259 reaksiya verib par\u00e7alana bil\u0259r. Bunu n\u0259z\u0259r\u0259 almal\u0131s\u0131n\u0131z.<\/p>\n
Real d\u00fcnyada harada rast g\u0259linir? \u00c7ox yerd\u0259. Polad istehsal\u0131nda, isti soba hiss\u0259l\u0259ri \u00fc\u00e7\u00fcn \u0259lad\u0131r; m\u0259s\u0259l\u0259n, tuyerl\u0259r v\u0259 ya baca \u0259traf\u0131ndak\u0131, istilik v\u0259 materiallar\u0131n \u015fidd\u0259tli z\u0259rb\u0259l\u0259rinin daimi oldu\u011fu yerl\u0259rd\u0259. Yad\u0131ma g\u0259lir, bir i\u015fd\u0259 soban\u0131n astar\u0131n\u0131 SiC-\u0259 d\u0259yi\u015fdirdik v\u0259 o, iki d\u0259f\u0259 uzun\u00f6m\u00fcrl\u00fc oldu \u2014 alt\u0131 ayda bir astar d\u0259yi\u015fdirm\u0259k laz\u0131m g\u0259lm\u0259kd\u0259n bir ild\u0259n \u00e7oxa q\u0259d\u0259r davam etdi. Orada b\u00f6y\u00fck q\u0259na\u0259t oldu. Mis v\u0259 ya al\u00fcminium kimi metallarda o, ergitm\u0259 qablar\u0131nda v\u0259 kanallarda istifad\u0259 olunur; s\u0259thi metal\u0131n yap\u0131\u015fmas\u0131na imkan vermir, buna g\u00f6r\u0259 t\u0131xanma olmur. Keramika sah\u0259sind\u0259 is\u0259 y\u00fcks\u0259k temperaturda y\u00fckl\u0259r alt\u0131nda \u0259yilm\u0259y\u0259n soba dayaqlar\u0131 v\u0259 r\u0259fl\u0259r \u00fc\u00e7\u00fcn uy\u011fundur.<\/p>\n
Bu yaln\u0131z k\u00f6hn\u0259 m\u0259kt\u0259b s\u0259nayesi deyil. Onu z\u0259r\u0259rli qazlarla m\u0259\u015f\u011ful olan yand\u0131rma sobalar\u0131nda v\u0259 ya korroziy madd\u0259l\u0259rl\u0259 i\u015fl\u0259y\u0259n kimy\u0259vi reaktorlarda da tapars\u0131n\u0131z. Son vaxtlar onu ya\u015f\u0131l enerji qur\u011fular\u0131nda, m\u0259s\u0259l\u0259n, biomas k\u00fctl\u0259si qazla\u015fd\u0131r\u0131c\u0131lar\u0131nda v\u0259 ya g\u00fcn\u0259\u015f qur\u011fular\u0131nda g\u00f6rm\u00fc\u015f\u0259m. Onu dem\u0259k olar ki, ist\u0259nil\u0259n formaya \u2013 standart k\u0259rpicl\u0259r\u0259 v\u0259 ya x\u00fcsusi par\u00e7alara \u2013 sala v\u0259 x\u00fcsusi har\u00e7larla qura bil\u0259rsiniz. \u018fvv\u0259lc\u0259 baha ba\u015fa g\u0259lir, kiloqram\u0131 b\u0259lk\u0259 be\u015f-on dollar, amma \u00e7\u0259tin yerl\u0259rd\u0259 tez \u00f6d\u0259yir.<\/p>\n
Bununla bel\u0259, bu m\u00fck\u0259mm\u0259l deyil. Onu d\u00fczg\u00fcn etm\u0259k \u00fc\u00e7\u00fcn diqq\u0259tli n\u0259zar\u0259t t\u0259l\u0259b olunur; \u0259g\u0259r nitirl\u0259\u015fm\u0259 tam ba\u015fa \u00e7atmasa, z\u0259if n\u00f6qt\u0259l\u0259r yaran\u0131r. K\u0259sm\u0259 v\u0259 ya frez\u0259l\u0259m\u0259 toz qald\u0131r\u0131r ki, bu da pis x\u0259b\u0259rdir \u2014 x\u0259r\u00e7\u0259ng t\u00f6r\u0259d\u0259 bil\u0259r \u2014 ona g\u00f6r\u0259 maska tax\u0131n v\u0259 aspirasiya sistemind\u0259n istifad\u0259 edin. \u0130stehsal enerji s\u0259rf edir, amma t\u0259krar emal yax\u015f\u0131la\u015f\u0131r; b\u0259zi yerl\u0259r k\u00f6hn\u0259 hiss\u0259l\u0259rd\u0259n 70% SiC-ni geri \u00e7\u0131xar\u0131r. T\u0259dqiqatlar da s\u0259rh\u0259dl\u0259ri geni\u015fl\u0259ndirir: m\u0259s\u0259l\u0259n, \u00e7atlara qar\u015f\u0131 daha dayan\u0131ql\u0131 etm\u0259k \u00fc\u00e7\u00fcn m\u00fcxt\u0259lif madd\u0259l\u0259r \u0259lav\u0259 etm\u0259k v\u0259 ya tullant\u0131lar\u0131 azaltmaq \u00fc\u00e7\u00fcn 3D \u00e7apdan istifad\u0259 etm\u0259k.<\/p>\n
\u00dcmumi g\u00f6t\u00fcrd\u00fckd\u0259, nitritl\u0259 birl\u0259\u015fdirilmi\u015f silikon karbid ehtiyac olanda sad\u0259c\u0259 i\u015fl\u0259y\u0259n materiallardan biridir. M\u0259nim t\u0259cr\u00fcb\u0259m\u0259 g\u00f6r\u0259, o, \u00e7\u0259tin v\u0259ziyy\u0259tl\u0259ri tamamil\u0259 d\u0259yi\u015fdirib, m\u0259s\u0259l\u0259n, o sink zavodunda s\u0259m\u0259r\u0259liliyi xeyli art\u0131rd\u0131. \u018fg\u0259r ondan istifad\u0259 etm\u0259yi d\u00fc\u015f\u00fcn\u00fcrs\u00fcn\u00fczs\u0259, onu \u015f\u0259raitiniz\u0259\u2014istiqlik, kimy\u0259vi madd\u0259l\u0259r, g\u0259rginlik\u2014uy\u011funla\u015fd\u0131r\u0131n v\u0259 Saint-Gobain kimi firmalar\u0131n texniki g\u00f6st\u0259ricil\u0259rini yoxlay\u0131n. Daha yax\u015f\u0131, daha ekoloji c\u0259h\u0259td\u0259n t\u0259miz \u00fcsullar axtard\u0131qca onun parlaq g\u0259l\u0259c\u0259yi var.<\/p>","protected":false},"excerpt":{"rendered":"
Nitride Bonded Silicon Carbide: A Reliable Ally Against Heat and Wear in Industry You know, after spending over twenty years in the refractories business, tinkering with all sorts of materials that have to stand up to blistering temperatures and harsh conditions, I’ve developed a real appreciation for nitride bonded silicon carbide. It’s not the kind […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-44","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/posts\/44","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/comments?post=44"}],"version-history":[{"count":1,"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/posts\/44\/revisions"}],"predecessor-version":[{"id":45,"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/posts\/44\/revisions\/45"}],"wp:attachment":[{"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buyscialishrx.com\/az\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}