Iterambere sic gukura kwingenzi ibintu byingenzi

Iyo silicon karbide kristal ikuze, "ibidukikije" byimikurire yimbere hagati ya axial centre ya kristu nu nkombe biratandukanye, kuburyo guhangayikishwa na kirisiti ku nkombe byiyongera, kandi kristu ya kirisiti byoroshye kubyara "inenge zuzuye" bitewe ningaruka za grafite ihagarika impeta "karubone", uburyo bwo gukemura ikibazo cyuruhande cyangwa kongera ubuso bukomeye bwikigo (hejuru ya 95%) ni ingingo yingenzi ya tekiniki.

Nkuko inenge ya macro nka "microtubules" na "inclusitions" igenzurwa buhoro buhoro ninganda, bikarwanya kristu ya kariside ya silikoni "gukura byihuse, birebire kandi binini, kandi bigakura", inkombe "inenge yuzuye" iragaragara cyane, kandi hamwe no kwiyongera kwa diameter nubunini bwa kariside ya kariside ya kariside, inkombe "inenge yuzuye" izagwizwa na kare kare ya diameter.

Ikoreshwa rya tantalum karbide TaC ni ugukemura ikibazo cyuruhande no kuzamura ireme ryikura rya kristu, nimwe mubyerekezo byingenzi bya tekinike yo "gukura vuba, gukura cyane no gukura". Mu rwego rwo guteza imbere iterambere ry’ikoranabuhanga mu nganda no gukemura “gutumiza mu mahanga” ibikoresho by’ibanze, Hengpu imaze gutera imbere ikemura ikibazo cya tantalum carbide coating (CVD) kandi igera ku rwego mpuzamahanga.

Tantalum karbide TaC itwikiriye, uhereye kubitekerezo ntibigoye, hamwe no gucumura, CVD nubundi buryo byoroshye kubigeraho. Uburyo bwo gucumura, gukoresha ifu ya tantalum ya karbide cyangwa preursor, ukongeramo ibintu bifatika (muri rusange ibyuma) hamwe nu mukozi uhuza (muri rusange urwego rurerure rwa polymer), ushyizwe hejuru yubuso bwa grafitike yashizwemo ubushyuhe bwinshi. Ukoresheje uburyo bwa CVD, TaCl5 + H2 + CH4 yashyizwe hejuru ya matrix ya grafite kuri 900-1500 ℃.

Nyamara, ibipimo byibanze nka kristu yerekanwe ya tantalum ya karbide, uburebure bwa firime imwe, kurekura impagarara hagati ya coating na matrix ya grafite, ibice byo hejuru, nibindi, biragoye cyane. Cyane cyane muri sic kristal yo gukura ibidukikije, ubuzima butajegajega ubuzima nibintu byingenzi, nibyo bigoye cyane.