Kukho iindlela ezininzi eziphambili zokuphucula ukuqina kwee-ceramics ze-alumina:
1. Ukuqinisa iZirconia: Le yindlela yokuqinisa esetyenziswa kakhulu. Xa kufakwa ubungakanani obufanelekileyo beZirconia (ZrO2) kwi-alumina, ukuqina kwayo kunokuphuculwa kakhulu. Isiphumo sokuqinisa sivela kakhulu kwiinkqubo ezifana nokuphucula i-matrix ye-alumina grain, ukuqina kwe-phase transformation ye-zirconia, ukuqina kwe-microcrack, kunye nokuqhuba i-crack kunye ne-bifurcation.
2. Iiwhiskers kunye nokuqina kwefayibha: Iiwhiskers ziikristale zeseramikhi enye ezinomlinganiselo ophezulu, kwaye ubude befayibha bude ngokuphindwe kaninzi kuneewhiskers zeseramikhi. Zonke zingongezwa kwi-alumina ceramics njengezinto zokuqinisa. Ukongezwa kweewhiskers okanye iifayibha kunokunyusa umphezulu wokuqhekeka, oko kukuthi, ukwandisa umjelo wokusasazeka kweemfayibha. Xa ukuqhekeka kufikelela kwiifayibha (iiwhiskers), ukutsalwa, ukuqhekeka, kunye nokuqhekeka kweefayibha (iiwhiskers) kuya kwenzeka, ngaloo ndlela kudla amandla okuqhekeka kunye nokuphucula ukuqina kweseramik.
3. Ukuqinisa iinxalenye: Ukongeza iinxalenye ezine-modulus ephezulu elastiki (ezifana neSiC, TiC, TiN, njl.njl.) kwizinto ze-alumina kunokubangela ukuba imifantu iphambuke kwaye ihlukane xa izinto ziqhekeka, nto leyo edla amandla okuqhekeka, ngaloo ndlela kuphucule ukuqina. Nangona isiphumo sokuqinisa iinxalenye singesihle njengeseentshebe kunye neefayibha, ukuxubana okufanayo kwezinto ezikrwada kunye nokuqina kwe-sintering kulula kwaye kulula kunee-composites zefayibha kunye neentshebe.
4. Ukuziqinisa kwe-Alumina: Iiceramics ezenziwe ngomgubo we-alumina onama-nanoscale zibonisa ukuba zi-superplasticity egqwesileyo kumaqondo obushushu aphantsi. Le nanomaterial inokuphucula imilo kunye neempawu zomda weenkozo ze-ceramic, ngaloo ndlela yonyusa ukuqina kwazo.
5. Yazisa isigaba sesibini: Yazisa isigaba sesibini kwi-matrix ye-alumina ceramics ukuze izalise imida ye-alumina, nto leyo eluncedo ekuthinteleni ukwanda kweentanda kwaye ngaloo ndlela iphucule ukuqina kwee-ceramics. Umzekelo, i-zirconia-toughened alumina isebenzisa le ndlela.
6. Ukongeza iikristale zembewu ye-alumina: Ukongezwa kweekristale zembewu ye-alumina kunokukhuthaza ukukhula kwe-anisotropic kweengqolowa zekristale kwaye kwenze iinkozo zekristale eziqhekekileyo okanye ezi-columnar, ezifana neentshebe, ezinokubangela ukuqhekeka kweentanda, ukutsalwa kweengqolowa, kunye nokuqina konxibelelwano lweeseramikhi.
Ezi ndlela zingasetyenziswa zodwa okanye zidityaniswe ukuphucula ukuqina kwee-alumina ceramics. Ukhetho oluthile luxhomekeke ekusebenzeni okufunekayo, iindleko kunye neemeko zokusetyenziswa.Iiseramikhi ze-alumina eziqinileyo ze-ZTAevela kumenzi weChemshun Ceramics inokuhlangabezana ngempumelelo neemfuno zakho zokuqina okuphezulu
Ixesha leposi: Meyi-10-2024