Isixhobo esikhethekileyo esenziwe bhetyebhetye isixhobo sokudibanisa ivili

Ngenxa yamandla ojongano aphezulu phakathi kwedayimani kunye nesinyithi ngokubanzi kunye ne-alloy, amasuntswana edayimani akanakutyalwa kukungqengqeleka kweyona ndawo iphantsi yokunyibilikisa, kunye nokudibana kakubi. Kwitekhnoloji yemveliso yendabuko, amasuntswana edayimani axhomekeka kuphela kumatshini obambekayo obumba umatshini obandayo we-matrix ukufaka i-matrix yentsimbi ye-matrix, kodwa angabinisiqhina oluqinileyo lwekhemikhali okanye isibophelelo se-metallological, kubangela amasuntswana edayimane. ukwahlula kwisiseko sesinyithi se-matrix emsebenzini, okunciphisa kakhulu ubomi benkonzo kunye nenqanaba lokusebenza kwezixhobo zedayimane. Kwizixhobo ezininzi ezingabhaliswanga, umda wokusetyenziswa kwedayimane usezantsi, kwaye inani elikhulu leedayimane ezibizayo ziyalahleka kwiiphipu zenkunkuma. U-Lin Zengdong wakhokela ekusebenziseni itekhnoloji yedayimani yomgangatho wedayimani yokubeka umphezulu wedayimani ngeempawu ezininzi ezintsha, ezifana nokuqhuba kakuhle kwe-thermal, uzinzo olufanelekileyo lokuzinza, ukuphucula iipropathi zalo zomzimba kunye neekhemikhali, ukuphucula ukuthengwa kwaso kwisisombululo sensimbi okanye i-alloy, njl.
Ukufakwa metallization komphezulu wedayimani kutsala umdla wabenzi besixhobo sedayimane ekhaya nakumazwe aphesheya ukusukela ngo-1970. *** Nangona kubonakalisiwe ukuba ezinye iinyithi ezifana ne-tungsten (azixutywanga) zinokwenza umaleko we-WC kumphezulu wedayimani kubushushu obuphantsi (malunga ne-800 ℃), amandla afanelekileyo odibaniso anokufumaneka ngokushisa ngeyure enye vacuum nangaphezulu ngama-600 ℃ ngokwenkqubo esetyenzisiweyo yokuqonda ubungakanani bomgangatho wedayimani. Ngokweemeko zokona zezixhobo ezisetyenzisiweyo zokusika idayimane, akunakufane kwenzeke ukuba ungqengqeleko lwe metallised lwenziwe kumphezulu wedayimane ukuba lufudunyezwe kangangemizuzu emi-5 kwi-900 non engathathwanga okanye kwi-vacuum esezantsi. Kungenxa yokuba ngaba ii-atom zentsimbi ezisebenzayo (iTi, V, Cr, njl.) Ziyacetyiswa kumphezulu wedayimani okanye indlela ekujongwa ngayo ifikelela kumdibaniso we-metallological bond kunye nedayimani yinkqubo yofakelo lweatom. Ngokweqondo lobushushu elisetyenziselwa ukucinezela okushushu kunye nexesha elincinci, le nkqubo ayonelanga. Ngaphantsi kwemeko yokona okuqinileyo kwesigaba (ngamanye amaxesha kukho inani elincinci lamandla aphantsi kunye nesinyithi esinyibilikisi esinyibilikisiweyo okanye isigaba se-alloy yolwelo), umxokelelwano wamachiza okanye umdibaniso we-metallurgisation we-matrix ukuya kwidayimani unobuthathaka kakhulu okanye awuzukubumba konke konke.
Ukufakwa metallization kwendawo yedayimani ayisiyiyo njongo yokugqibela, kodwa lelinye lamanyathelo okuqonda ukudityaniswa kwemichiza yentsimbi. Emva kokuba idayimani efakwayo ityunjwe kumazinyo e-saw (drill), iidayimani evezwe kwicandelo lokuqhekeka ilahlekile loo mipako, kwaye umphezulu wemingxunya eshiyekileyo igudileyo kakhulu, okubonakala ngathi kubonisa ukuba idayimani kunye nematrix ayifikanga kwinqanaba ukuqubha kwamachiza. Ke ngoko, nokuba umphezulu wedatha yedayimani uyafezekiswa, indlela eqinileyo yesigaba seplastiki yesalfure yesono ayinakuyiqonda indibaniselwano eqinileyo phakathi kwento yedayimani kunye neematrix.