Ka sani, bayan na shafe sama da shekaru ashirin a harkar kayan watsawa zafi, ina gwada nau'ikan kayan daban-daban da dole su jure zafin gaske da yanayi mai tsauri, na sami kwarin gwiwa ga silicon carbide da aka ha\u0257a da nitride. Ba irin fasahar jan hankali ce da ake magana a kansa a TED talks ba, amma a cikin aikin yau da kullum na masana'antu da matattara, ita ce mai ceto rai. Wannan abu ya ha\u0257a \u0199arfin silicon carbide da bindar nitride da ke \u0199ara masa juriya, kuma ya zama abin dogaro ga duk wanda ke fuskantar yanayi mai tsanani. Abin da nake so a kansa shi ne yadda yake magance matsaloli ba tare da wata hayaniya ba\u2014murfi masu \u0257orewa, \u0199arancin lokacin dakatawa, irin wa\u0257annan abubuwa. A cikin wannan rubutu, zan yi muku bayani kan abin da aka \u0199era shi, manyan \u0199arfinsa, inda ake amfani da shi, da wasu abubuwa da ya kamata a kula da su, bisa ga abin da na gani a filin aiki. Idan kai injiniya ne ko fasaha mai neman za\u0253u\u0253\u0253uka don tsarin da ke bu\u0199atar zafi mai yawa, wannan na iya ba ka wasu shawarwari masu amfani.<\/p>\n
<\/p>\n
Mu fara da abubuwan asali: yadda nitride bonded SiC ke ha\u0257uwa. Babban sinadari shine silicon carbide, ko SiC, wanda ake samu ta hanyar tsarin Acheson. A nan ne ake \u0257aukar yashi mai silica da carbon, a dumama su a babban tanda na lantarki har zuwa kusan digiri 2000 Celsius ko sama, sai su fito a matsayin wa\u0257annan \u0199wayoyin SiC masu tauri. Suna da \u0199arfi kamar \u0199arfe. Don yin sigar da aka ha\u0257a, ana gauraya wa\u0257annan \u0199wayoyin SiC da \u0199ananan foda na silicon sannan a siffanta su zuwa duk abin da ake bu\u0199ata\u2014buroka, faranti, ko ma bututu. Sannan a gasa su a cikin yanayi mai cike da nitrogen, a kusan 1400 zuwa 1500\u00b0C. Silicon yana ha\u0257uwa da nitrogen ya zama silicon nitride, Si3N4, wanda ke samar da wannan cibiyar ha\u0257awa da ke ri\u0199e komai a wurin. Yawanci SiC ne, kimanin 85% ko haka, inda nitride ke cike gibin. Idan ka kalli \u0199ar\u0199ashin microscope, za ka ga wa\u0257annan kristalan nitride masu siffar allura suna nade \u0199wayoyin SiC, suna samar da tsari mai \u0199arfi amma ba mai fashewa da sau\u0199i ba. Babu bu\u0199atar \u0199arin manna da zai iya \u0199onewa a zafin gaske, abin da ke da kyau.<\/p>\n
Yanzu, mu koma kan abin da ke sa shi yin aiki da kyau sosai. Dangane da zafi, wannan kayan na iya jurewa\u2014har zuwa 1650\u00b0C a cikin iska, kuma wani lokaci ma fiye idan yanayin ya kasance mai rage oksida. Yana samar da wani layin silika a saman sa lokacin da ya yi oksida, wanda ke aiki kamar garkuwa don hana \u0199arin lalacewa. Gudun watsawar zafi yana da kyau sosai, tsakanin watt 20 zuwa 40 a kowace mita-Kelvin, don haka yana sarrafa kwararar zafi ba tare da matsala ba a abubuwa kamar masu musayar zafi. Adadin fa\u0257a\u0257a \u0199anana ne, kusan sau 4 \u00d7 10\u207b\u2076 a kowace digiri Celsius, wanda ke nufin ba ya fashewa da sau\u0199i idan yanayin zafi ya canza sosai. A ta fuskar injiniya, yana da \u0199arfi\u2014\u0199arfin matsawa fiye da megapascals 200\u2014kuma yana da matu\u0199ar juriya ga gogewa saboda SiC kusan ya yi tsauri kamar lu'u-lu'u. Na yi wa samfura gwaje-gwajen lalacewa da slag mai narkewa, kuma sun fito suna da kyau sosai fiye da kayan alumina.<\/p>\n
A ta fuskar sinadarai, shi ma zakara ne. Asidi, alkali, \u0199arafa da aka narke\u2014ba sa dame shi sosai. A aikin aluminium, yana iya jimre fluorides wa\u0257anda za su cinye sauran kayan wuta. Kauri na kimanin gram 2.7 zuwa 3.1 a kowace santimita cubic, don haka ba shi da nauyi sosai, kuma ramuka suna tsakanin kashi 10 zuwa 20, wanda ke ba shi damar numfashi ka\u0257an ba tare da rushewa ba. Amma ga garga\u0257i: idan kana cikin yanayi mai tururi sama da 1400\u00b0C, nitride na iya yin mu'amala da ruwa ya lalace. Dole ne ka yi la'akari da hakan.<\/p>\n
A ina ake ganinsa a ainihin duniya? A wurare da dama. A masana'antar samar da \u0199arfe, yana da kyau sosai don sassan tanda mai fashewa, kamar wuraren da ke kewaye da tuyeres ko bututun hayaki, inda zafi da bugun kayan aiki ke ci gaba. Na tuna wani aiki inda muka sauya rufin tanda zuwa SiC, kuma ya da\u0257e sau biyu\u2014daga bu\u0199atar sake rufewa duk bayan watanni shida zuwa sama da shekara guda. Babban tanadi ne a can. Ga \u0199arafa kamar tagulla ko aluminium, ana amfani da shi a cikin tukwane na narkar da \u0199arafa da bututu; saman ba ya barin \u0199arafa ta manne, don haka babu toshewa. A fannin keramiki, yana samar da kyawawan ginshi\u0199ai da matattara na murhu wa\u0257anda ba sa lan\u0199wasawa \u0199ar\u0199ashin nauyi a zafin wuta mai \u0199arfi.<\/p>\n
Ba masana'antar gargajiya ka\u0257ai ba ne. Za ka same shi a cikin na'urorin \u0199onawa da ke magance hayaki mai guba, ko a cikin na'urorin sinadarai masu abubuwa masu lalata. A 'yan kwanakin nan, na ga shi a cikin kayan makamashi mai tsabta kamar na'urorin gasifikar biomass ko tsarin hasken rana. Za ka iya siffanta shi zuwa kusan komai\u2014bricks na yau da kullum ko sassa na musamman\u2014sannan ka girka shi da siminti na musamman. Yana da tsada a farko, watakila dalar Amurka biyar zuwa goma a kowace kilo, amma yana dawo da riba cikin sauri a wurare masu wahala.<\/p>\n
Duk da haka, ba cikakke ba ne. Don gyara shi daidai, ana bu\u0199atar kulawa sosai; idan nitriding bai yi yadda ya kamata ba, za a sami wuraren rauni. Yanke ko goge yana haifar da \u0199ura mai cutarwa\u2014za ta iya zama mai haifar da ciwon daji\u2014don haka sa maski kuma yi amfani da na'urar fitar da \u0199ura. Samarwa yana cinye makamashi, amma sake sarrafawa yana inganta; wasu wurare suna dawo da 70% na SiC daga tsofaffin sassa. Bincike ma yana tura iyakoki gaba, kamar \u0199ara wasu abubuwa don \u0199ara \u0199arfi da hana tsagewa, ko amfani da buga 3D don rage sharar.<\/p>\n
Idan aka yi la'akari da komai, silicon carbide da aka ha\u0257a da nitride \u0257aya ne daga cikin wa\u0257annan kayan da ke aiki idan ka bu\u0199aci su. Daga abin da na ta\u0253a mu'amala da shi, ya juya halin da ake ciki mai wahala, kamar a masana'antar zinc inda ya \u0199ara inganci sosai. Idan kana tunanin amfani da shi, daidaita shi da yanayinka\u2014zafi, sinadarai, matsin lamba\u2014kuma duba \u0199ayyadaddun bayanai daga kamfanoni kamar Saint-Gobain. Yana da kyakkyawar makoma yayin da muke neman hanyoyi mafi kyau kuma masu kare muhalli wajen yin abubuwa.<\/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\/ha\/wp-json\/wp\/v2\/posts\/44","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/comments?post=44"}],"version-history":[{"count":1,"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/posts\/44\/revisions"}],"predecessor-version":[{"id":45,"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/posts\/44\/revisions\/45"}],"wp:attachment":[{"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buyscialishrx.com\/ha\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}