Ithuluzi eliyisondo elikhethekile lebronze elakhiwe ngendlela yedayimane

Ngenxa yamandla okukhanya aphezulu phakathi kwedayimane kanye nensimbi ejwayelekile kanye ne-alloy, izinhlayiya zedayimane azikwazi ukungena ngaphakathi nge-alloy low encibilikayo ephansi, ngokubumbana okungekuhle. Ebuchwephesheni bendabuko bokukhiqiza, izinhlayiya zedayimane zithembela kuphela kumshini wokuqopha we-matrix wokufakwa ngaphakathi kwe-matrix yensimbi ye-matrix, kepha hhayi ukwakha isibopho samakhemikhali esiqinile noma isibopho se-metallological, okuholela ezinhlayiyeni zedayimane ukwehlukanisa kwisisekelo sensimbi ye-matrix emsebenzini, okunciphisa kakhulu impilo yenkonzo kanye nezinga lokusebenza kwamathuluzi edayimane. Kumathuluzi afakwe kakhulu, izinga lokusetshenziswa kwedayimane liphansi, futhi inani elikhulu lamadayimane abizayo alahlekile kumapaki wemfucuza. U-Lin Zengdong wahola ekusebenziseni ubuchwepheshe be-diamond metallization technology ukukhulisa indawo yedayimane enezici eziningi ezintsha, njengokuhambisa okuhle kwe-thermal, ukuqina okuhle kwe-thermal, ukuthuthukisa izakhiwo zayo zokuqala zomzimba nezamakhemikhali, ukwenza ngcono ukubonakala kwaso ngesisombululo sensimbi noma i-alloy, njll.
Ukufakwa metallization kwendawo yedayimane kudonsele ukunakekela kwabakhiqizi bamathuluzi edayimane ekhaya nakwamanye amazwe kusukela ngo-1970s. *** Yize kufakazelwe ukuthi ezinye izinsimbi ezifana ne-tungsten (hhayi i-oxidised) zingakha ungqimba lwe-WC ngaphezulu kwedayimane emazingeni okushisa aphansi (cishe ama-800 ℃), amandla afanelekayo wokubopha angatholakala ngokushisa ngehora eli-1 ngaphansi vacuum nangaphezulu kwama-600 ℃ ngokwenqubo esetshenziselwa ukubona i-metallization yangaphambi kwidayimane. Ngokuya ngezimo zokona zamathuluzi okusika amadayimane ajwayelekile, akunakulindeka ukuthi ungqimba lwensimbi lwenziwe endaweni yedayimane uma lufudunyezwa imizuzu engaba ngu-5 ku-900 ℃ ekungatheni noma ku-vacuum ephansi. Ngoba noma ngabe ama-athomu wensimbi asebenzayo (Ti, V, Cr, njll.) Ayacetshiswa endaweni yedayimane noma ukusabela kwesixhumi kufinyelela kwinhlanganisela ye-metallurgis ye-bond nedayimane inqubo yokufakelwa kwe-athomu. Ngokuya ngokushisa okusetshenziselwa ukucindezela okushisayo nesikhathi esifushane kangako, le nqubo ayanele. Ngaphansi kwesimo sokuqina esonweni okuqinile (kwesinye isikhathi kukhona inani elincane lamandla aphansi kanye nensimbi yaphansi yokuncibilika yensimbi noma isigaba se-alloy liquid), i-chemical bonding noma i-metallurgical bonding Force ye-matrix kuya kwidayimane ayibuthakathaka kakhulu noma ngeke yakha nhlobo.
Ukumiswa kwensimbi yangaphambili yedayimane akuyona umgomo wokugcina, kodwa kungenye yezinyathelo zokubona ukuhlanganiswa kwensimbi yamakhemikhali ngensimbi ye-matrix. Ngemuva kokuthi idayimane elihlanganisiwe lifakwe amazinyo e-saw (drill), idayimane elivezwe engxenyeni yokwaphuka liphulukana namalahle, kanti ebusweni imigodi esele ibushelelezi kakhulu, okubonakala kubonisa ukuthi idayimane ne-matrix alikafinyeleli ezingeni ukuhlangana kwamakhemikhali. Ngakho-ke, noma ngabe i-metallization yangaphambili yedayimane ibonwa, indlela yesiko eqinile yesigaba se-powder eqinile ayikwazi ukubona inhlanganisela eqinile phakathi kwento yedayimane ne-matrix.