Ihame rya diamant mulching layer kugirango utezimbere ubushobozi bwo gushiramo paki

1. Gukora diyama isize karbide

Ihame ryo kuvanga ifu yicyuma na diyama, gushyushya ubushyuhe butajegajega hamwe no kubika igihe runaka mugihe cyacyu. Kuri ubu bushyuhe, umuvuduko wumwuka wicyuma urahagije mugutwikira, kandi mugihe kimwe, icyuma cyandikirwa hejuru ya diyama kugirango kibe diyama isize.

2. Guhitamo ibyuma bisize

Kugirango ukore diyama ishikamye kandi yizewe, kandi urusheho gusobanukirwa ningaruka ziterwa nigitambaro ku mbaraga, hagomba gutoranywa icyuma. Turabizi ko diyama ari alloomorphism ya C, kandi lattice yayo ni tetrahedron isanzwe, ihame rero ryo gutwikira icyuma nuko icyuma gifitanye isano na karubone. Muri ubu buryo, mubihe bimwe na bimwe, imikoranire yimiti ibaho kuri interineti, ikora imiti ihamye, hanyuma havuka Me-C. Igitekerezo cyo gucengera no gufatira hamwe muri sisitemu ya diyama-icyuma cyerekana ko imikoranire yimiti ibaho gusa iyo adhesion ikora AW> 0 ikagera ku gaciro runaka. Itsinda rigufi ryigihe B ibintu byicyuma mumeza yibihe, nka Cu, Sn, Ag, Zn, Ge, nibindi bifite aho bihurira na C hamwe nakazi gake, kandi imigozi yashizweho ni imiyoboro ya molekile idakomeye kandi ntigomba gutoranywa; inzibacyuho yinzibacyuho mumeza maremare yigihe, nka Ti, V, Cr, Mn, Fe, nibindi, bifite akazi gakomeye ko gufatanya hamwe na sisitemu ya C. Imbaraga zikorana za C hamwe nicyuma cyinzibacyuho ziyongera numubare wa electroni d layer, bityo Ti na Cr birakwiriye gutwikira ibyuma.

3. Kugerageza itara

Ku bushyuhe bwa 8500C, diyama ntishobora kugera ku mbaraga zubusa za atome ya karubone ikora hejuru ya diyama nifu yifu kugirango ikore karbide yicyuma, kandi byibuze 9000C kugirango igere ku mbaraga zikenewe mu gukora karbide yicyuma. Ariko, niba ubushyuhe buri hejuru, bizatanga igihombo cyo gutwika diyama. Urebye ingaruka zamakosa yo gupima ubushyuhe nibindi bintu, ubushyuhe bwikigereranyo bwashyizwe kuri 9500C. Nkuko bigaragara mubyerekeranye hagati yigihe cyo gukumira no kwihuta (munsi),? Nyuma yo kugera ku mbaraga zubusa zibyara karbide, reaction irakomeza vuba, hamwe nibisekuru bya karbide, igipimo cyibisubizo kizagenda gahoro gahoro. Ntagushidikanya ko hamwe no kwagura igihe cyo kubika, ubwinshi nubwiza bwurwego bizanozwa, ariko nyuma yiminota 60, ubwiza bwurwego ntibugire ingaruka cyane, nuko dushyiraho igihe cyo kubika nk'isaha 1; hejuru ya vacuum, nibyiza, ariko bigarukira kumiterere yikizamini, muri rusange dukoresha 10-3mmHg.

Ipaki yinjiza ubushobozi bwo kongera ihame

Ibisubizo byubushakashatsi byerekana ko umubiri wigitereko ukomera kuri diyama isize kurusha diyama idafunze. Impamvu yubushobozi bukomeye bwo kwinjiza umubiri wigitereko kuri diyama isize ni uko, kugiti cyanjye, hari inenge zo hejuru hamwe na micro-crack hejuru cyangwa imbere ya diyama yubukorikori idahwitse. Bitewe nuko microcrack zihari, imbaraga za diyama ziragabanuka, kurundi ruhande, C ya diyama gake gake ikora hamwe nibice bigize umubiri. Kubwibyo, umubiri wapine ya diyama idapfundikijwe ni pake yo gukuramo imashini, kandi ubu bwoko bwa pake yinjizamo intege nke cyane. Iyo umutwaro umaze, microcracks zavuzwe haruguru zizaganisha ku guhangayika, bikaviramo kugabanuka kwubushobozi bwo gushyiramo. Ikibazo cya diyama iremereye iratandukanye, kubera isahani ya firime yicyuma, inenge ya diyama ya diyama hamwe nuduce duto duto twuzuye, kuruhande rumwe, imbaraga za diyama yatwikiriwe ziriyongera, kurundi ruhande, zuzuyemo uduce duto duto, ntakibazo kibaye cyo kwibandaho. Icy'ingenzi cyane, kwinjira mubyuma bifatanye mumubiri wapine bihinduka karubone hejuru ya diyama Kwinjira kwingingo. Igisubizo ni icyuma gihuza inguni ya diyama kuva hejuru ya 100 o kugeza munsi ya 500, byateje imbere cyane icyuma gihuza amazi ya diyama, kora umubiri wapine yumupaki wa diyama utwikiriye washyizwemo na mashini yambere ya mashini yamashanyarazi mubipfunyika, aribyo gutwikira diyama nu mubiri wumubiri, bityo bikazamura cyane umubiri wuruhinja.

Ubushobozi bwo gushiramo. Muri icyo gihe, twizera kandi ko ibindi bintu nkibipimo byo gucumura, ubunini bwa diyama isize, ingano, ingano yumubiri winda nibindi nibindi bigira ingaruka runaka kumpamvu zinjizwamo. Umuvuduko ukwiye wo gucumura urashobora kongera ubwinshi bwingutu no kunoza ubukana bwumubiri. Ubushuhe bukwiye bwo gucumura hamwe nigihe cyo gukingura birashobora guteza imbere ubushyuhe bwo hejuru bwimiti yimiterere yumubiri wapine hamwe nicyuma gitwikiriwe nicyuma na diyama, kugirango ipaki yububiko ihamye neza, urwego rwa diyama ni rwiza, imiterere ya kristu irasa, icyiciro gisa nacyo kirashonga, kandi igipapuro cyiza ni cyiza.

Amagambo yavuye muri Liu Xiaohui