Kukana kwa R-sic ndi Sic3n4-sic ku aluminium-sillun alloy kusungunuka

Silicon Carbider ndi silicon nitride alibe utoto wosakhazikika wokhala ndi chitsulo chosungunula. Kupatula pakulowetsedwa ndi magnesium, nickeum, chromiamu cromiyan ndi chitsulo chosapanga dzimbiri, alibe chitoliro cha zitsulo zina, chifukwa amatha kugwiritsidwa ntchito ndi mafakitale a aluminiyalys.

Mu pepala ili, kukana kwa chipongwe chobwezeretsedwanso sicbider r-sicding bongo omangidwa sicding Si3n4

Malinga ndi zoyeserera za kasanu ndi matenthedwe a 1080h mu 495 mu 495 ° C ~ 620 ° Chuminiyamu-silicon almoy amasungunuka.

Zitsanzo za R-sic ndi sic yowonjezeka ndi nthawi yophukira komanso kuchuluka kwa kuchepa kwa mphamvu. Kuchulukitsa komwe kumaperekedwa ndi chiyanjano chochepa. (Chithunzi 1)

kuvala zolimbana (1)

Ndi kusanthula kwamphamvu kwa mphamvu, zitsanzo za R-SIC ndi sii3-sic. Mu mawonekedwe a XRD, kuchuluka kwa aluminiyamu-siltun peak ndiye otsalira a aluminiyamu-suricon aloy. (Chithunzi 2 - Chithunzi 5)

Kudzera mwa kusanthula kwa sem, monga nthawi yophukira ikuwonjezeka, kapangidwe ka H-sic ndi siic ndi siic yotayirira, koma osawonongeka. (Chithunzi 6 - Chithunzi 7)

kuvala zolimbana (2)

Zovuta zapamwamba σs / l> Σ / g za mawonekedwe pakati pa aluminiyamu madzi ndi ceramic, 90

Chifukwa chake, zida za R-sic ndi sic ndizabwino kwambiri pakulimbana ndi matenda a aluminicon kusungunuka ndikusiyana pang'ono. Komabe, mtengo wa zinthu za Sindi3n4 ndi wotsika kwambiri ndipo wagwiritsidwa ntchito bwino kwazaka zambiri.


Post Nthawi: Disembala-17-2018
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