Wedzera Kusimba NeZirconia Yakaomeswa Alumina Zvikamu

ZTA ceramics inopa yepamusoro tribological zvivakwa kana ichienzaniswa neyakajairika alumina ceramics, kuvaita sarudzo yakakodzera yekucheka maturusi, ma bearings, pombi uye fluid management components.

Under stress, zirconia zvimedu zvinoshanduka kubva kune metastable tetragonal crystal zvimiro kuenda kune monoclinic, kugadzira vhoriyamu yekuwedzera iyo inomanikidza kuparuka mune alumina matrix uye zvakanyanya kuvandudza kuomarara kwekupwanyika.

Pfeka Resistance

Zirconia Toughened Alumina (ZTA) chinhu chakasimba zvakanyanya. Inogona kumira kukanganiswa kweabrasion kana frictional kupfeka pasina kukuvara kukuvara; zvichiita kuti ive yakanakisa sarudzo yezvinhu zvekucheka mavhiri. Uyezve, ZTA inogona kumira tembiricha yakakwira isina kukuvara kana kuderedzwa.

ZTA inoshingirira zvakanyanya kumakemikari ekuora, zvichiita kuti ive yakanakisa sarudzo yezvinhu zvekurapa. Biocompatible uye inokwanisa kumirisana nemvura yemuviri, ZTA zvakare inozvirumbidza yakakwira flexural simba – yakakwana yehudyu inotsiva maapplication.

ZTA inogadzirwa kuburikidza nekushushikana-induced shanduko yeakanaka tetragonal zirconia zvidimbu kuita monoclinic chimiro.. Izvi zvinowedzera kuomarara kwekutsemuka nekuwedzera nzvimbo yakatenderedza makatsemuka. Saizvozvo, ZTA inoratidza kusimba uye kusimba zvakanyanya kupfuura alumina yekupfeka maapplication.

Corrosion Resistance

Zirconia Toughened Alumina (ZTA) ndeye advanced technical ceramic material inoshandiswa zvakanyanya muindasitiri nekuda kwesimba rayo, kuoma, kupfeka kupikisa uye corrosion resistance properties. ZTA inowana zvikumbiro muzvikamu zvakawanda zvinosanganisira mota uye aerospace yezvikamu zvakaita sejini, gasi turbines uye mekiniki zvikamu paunenge uchishanda sezvipfeko zvekupfeka mumapombi, zvisimbiso uye maturusi ekucheka anoshandiswa pakugadzira machining. Kuvhiya kwemumunda wekurapa kunogona zvakare kushandisa chinhu ichi nekuda kweiyo biocompatibility.

Durability mune ichi chinyorwa chinobva mukushushikana-induced shanduko yekuomesa maitiro, umo zirconia zvimedu mune alumina matrix zvinoshandura kune monoclinic zvimiro kuburikidza nekushushikana kunokonzera shanduko kuomarara., kubatsira kuvhara mitswe uye kuwedzera kuomarara kwekutsemuka, nokudaro kuzvidzivirira kubva mukukuvadzwa munzvimbo dzakasiyana siyana senge phosphoric acid, sulfuric acid uye distilled mvura. Izvi zvinoibvumira kurwisa ngura.

High Strength

Kubatanidza alumina uye zirconia kunoguma nekuwedzera simba uye kutsemuka kusimba zvichienzaniswa neyakajairwa alumina, kuita ZTA yakanakisa sarudzo yezvinhu zvezvikamu zviri pasi pekukanganisa kurodha. Uyezve, ZTA zvakare inozvikudza yakakura yemakemikari corrosion kuramba.

ZTA inozvirumbidza nekuoma kwepamusoro uye simba nekuda kwekushandurwa kwe tetragonal zirconia zvimedu kuita makristasi emonoclinic kuburikidza nekushushikana-induced shanduko nekurodha mechani kana kushanduka kwekushisa., uye yakazotevera kudzvanywa kubva ku monoclinic zirconia crystal formation inomanikidza alumina matrix, achichipa simba guru, durability, uye thermal shock resistance.

Iyi yakasarudzika ceramic zvakare inozvirumbidza yakanyanyisa kubhenda simba uye yakaderera yekupisa yekuwedzera coefficient, zvichiita kuti ive yakakwana kune maapplication anoda kutonhora michina. Uyezve, kupikisa kwayo kumakemikari anoparadza – kusanganisira mvura dzemuviri – inoita kuti ma implants ekurapa akwane kuiswa mukati mevanhu pasina njodzi yekudzikira nekufamba kwenguva achibvumira varwere kuti vanakirwe nezviitiko zvakasununguka pasina kunetseka pamusoro pekuora kwekudyara nekufamba kwenguva..

High Toughness

ZTA ceramics inovandudza kusimba kwealumina kuburikidza nekushushikana-induced shanduko yezvirconia zvimedu kuita zvakanaka., inowanikwa kuburikidza ne sintering uye inopisa isostatic kudzvanya (HIP). Zvichienderana nekuti yakawanda sei zirconia iripo mumatrix ayo, ZTA inogona kunge iine yakaderera kana yakakwirira kusimba zvivakwa.

Clausen akaratidzwa mukati 1976 kuti alumina matrices ane isina kugadzikana zirconia inogona kuomeswa kuti iwedzere michina zvivakwa nekubatanidza isina kugadzikana zirconia makristasi seakapararira akapararira metastable precipitates., akadai seaya akaumbwa kubva kune isina kugadzikana zirconia makristasi, kuvandudza ma mechanical properties. Akaratidza pfungwa iyi achishandisa crack propagation; apo kutsemuka kwaienda kumberi kuburikidza nechinhu uye kudzvanya nzvimbo yayo pamberi pemuromo wavo vaigona kushandura kuita monoclinic chikamu uye kuchinjisa kwairi zviri nyore kupfuura zvaizoitika neimwe nzira..

Iyi dhizaini inoomesa inowedzera simba rekushanduka uye kutsemuka kwealumina panguva imwe chete ichiwedzera kuoma., kugadzira chinhu chisingaenzaniswi chinoumbwa chakakodzera maapplication anoda kuomarara kwakanyanya, kuoma, kutyoka kuramba uye kutonhora zvinodiwa senge maindasitiri anocheka, milling kupfeka zvikamu kana kutonhora zvikamu.