1. Kupanga diamondi yokhala ndi carbide
Mfundo yosakaniza ufa wachitsulo ndi diamondi, kutentha kwa kutentha kokhazikika ndi kutchinjiriza kwa nthawi ina pansi pa vacuum. Pa kutentha kumeneku, mphamvu ya nthunzi yachitsulo imakhala yokwanira kuphimba, ndipo panthawi imodzimodziyo, zitsulo zimakongoletsedwa pamtunda wa diamondi kuti apange diamondi yokutira.
2. Kusankha zitsulo zokutidwa
Pofuna kuti chophimba cha diamondi chikhale cholimba komanso chodalirika, komanso kuti mumvetse bwino zomwe zimakhudzidwa ndi zojambulazo pa mphamvu yophimba, zitsulo zophimba ziyenera kusankhidwa. Tikudziwa kuti diamondi ndi alloomorphism ya C, ndipo lattice yake ndi tetrahedron wokhazikika, kotero mfundo yophimba zitsulo ndizoti zitsulo zimakhala ndi mgwirizano wabwino wa carbon. Mwa njira iyi, pansi pazifukwa zina, kuyanjana kwa mankhwala kumachitika pa mawonekedwe, kupanga mgwirizano wolimba wa mankhwala, ndipo Me-C membrane imapangidwa. Lingaliro lolowera ndi kumamatira mu dongosolo la diamondi-zitsulo limasonyeza kuti kuyanjana kwa mankhwala kumachitika kokha pamene ntchito yomatira imagwira ntchito AW> 0 ndikufika pamtengo wina. Zitsulo zazifupi zamagulu B zomwe zili mu tebulo la periodic, monga Cu, Sn, Ag, Zn, Ge, ndi zina zotero zimakhala ndi chiyanjano chochepa cha C ndi ntchito yotsika yomatira, ndipo zomangira zomwe zimapangidwira zimakhala zomangira zomwe sizili zamphamvu ndipo siziyenera kusankhidwa; zitsulo zosinthika patebulo lalitali la periodic, monga Ti, V, Cr, Mn, Fe, ndi zina zotero, zimakhala ndi ntchito yaikulu yomatira ndi dongosolo la C. Mphamvu yogwirizana ya C ndi zitsulo zosinthika zimawonjezeka ndi chiwerengero cha ma electron d wosanjikiza, kotero Ti ndi Cr ndizoyenera kwambiri kuphimba zitsulo.
3. Kuyesera kwa nyali
Pa kutentha kwa 8500C, diamondi sangathe kufika mphamvu ufulu adamulowetsa mpweya maatomu pa diamondi pamwamba ndi ufa zitsulo kupanga carbide zitsulo, ndi osachepera 9000C kukwaniritsa mphamvu zofunika mapangidwe carbide zitsulo. Komabe, ngati kutentha kwakwera kwambiri, kumapangitsa kuti diamondi iwonongeke. Poganizira kutengera kwa cholakwika cha kuyeza kwa kutentha ndi zinthu zina, kutentha kwa kuyezetsa zokutira kumayikidwa pa 9500C. Monga tikuwonera paubwenzi pakati pa nthawi yotchinjiriza ndi liwiro lakuchita (m'munsimu),? Pambuyo pofika ku mphamvu yaulere ya zitsulo za carbide, zomwe zimachitika mofulumira, ndipo ndi mbadwo wa carbide, zomwe zimachitika pang'onopang'ono zimachepa. Palibe kukayikira kuti ndi kuwonjezereka kwa nthawi yotsekemera, kachulukidwe ndi khalidwe la wosanjikiza zidzasinthidwa, koma pambuyo pa mphindi 60, khalidwe la wosanjikiza silimakhudzidwa kwambiri, kotero timayika nthawi yotsekemera ngati 1 ora; pamene vacuum ikukwera, imakhala yabwinoko, koma yocheperako pamayeso, nthawi zambiri timagwiritsa ntchito 10-3mmHg.
Phukusi luso lowonjezera luso
Zotsatira zoyesera zikuwonetsa kuti thupi la fetal limakhala lamphamvu ku diamondi yokutidwa kuposa diamondi yosakutidwa. Chifukwa champhamvu kuphatikizika kwa thupi la fetal ku diamondi yokutira ndikuti, panokha, pali zolakwika zapamtunda ndi ming'alu yaying'ono pamtunda kapena mkati mwa dayamondi iliyonse yopangidwa. Chifukwa cha kukhalapo kwa ma microcracks awa, mphamvu ya diamondi imachepa, komano, gawo la C la diamondi silimachitanso ndi zigawo za thupi la fetal. Choncho, matayala thupi la diamondi unncoated ndi mwangwiro mawotchi extrusion phukusi, ndipo mtundu wa phukusi Ikani ndi ofooka kwambiri. Katunduyo, ma microcracks omwe ali pamwambawa adzatsogolera kupsinjika, zomwe zimabweretsa kuchepa kwa kuthekera kwa phukusi. Mlandu wa diamondi wolemetsa ndi wosiyana, chifukwa cha kujambula kwa filimu yachitsulo, zowonongeka za diamondi ndi ming'alu yaying'ono zimadzazidwa, kumbali imodzi, mphamvu ya diamondi yophimba imachulukitsidwa, komano, yodzazidwa ndi ming'alu yaying'ono, palibenso vuto la kupsinjika maganizo. Chofunika kwambiri, kulowetsedwa kwazitsulo zomangika m'thupi la matayala kumasinthidwa kukhala carbon pamtunda wa diamondiKulowetsa kwa mankhwala. Chotsatira chake ndi chitsulo chomangira pakona yakunyowetsa ya diamondi kuchokera kupitilira 100 mpaka kuchepera 500, kumathandizira kwambiri chitsulo chomangira chonyowetsa diamondi, kupanga matayala a phukusi la diamondi lokhazikitsidwa ndi phukusi loyambira lamakina opangira mawotchi kukhala phukusi lomangira, lomwe ndi chophimba cha diamondi ndi matayala omangira thupi, motero kusintha kwambiri thupi la fetal.
Kukhoza kuyika phukusi. Nthawi yomweyo, timakhulupiriranso kuti zinthu zina monga magawo sintering, TACHIMATA diamondi tinthu kukula, kalasi, fetal thupi tinthu kukula ndi zina zimakhudzana ndi phukusi Ikani mphamvu. Kuthamanga koyenera kwa sintering kumatha kukulitsa kachulukidwe ndikuwongolera kuuma kwa thupi la fetal. Kutentha koyenera kwa sintering ndi nthawi yotchinjiriza kumatha kulimbikitsa kutentha kwamafuta amtundu wa tayala wa thupi ndi zitsulo zokutidwa ndi diamondi, kuti phukusi la mgwirizano likhale lokhazikika, kalasi ya diamondi ndi yabwino, kapangidwe ka kristalo ndi kofanana, gawo lofananira limasungunuka, ndipo phukusi lokhazikitsidwa bwino.
Kuchokera ku Liu Xiaohui
Nthawi yotumiza: Mar-13-2025
