99.99% Nano-alumina kua whakapakeketia ki te uku

1. Nā te kaha rawa o te paura nano-alumina, ka whakatauhia ngā ngoikoretanga o te whānuitanga tono e whakawhāitihia ana e te pakarukaru pāmahana iti. I roto i ēnei, ko ngā nanocomposites nano-aluminium oxy-carbide (SiC) te mea tino kitea, ā, ko tō rātou kaha piko mai i te . Kua piki ake ngā uku alumina kotahi-wāhanga mai i te 300-400 MPa ki te 1 GPa, ā, kua piki ake te pakari o te pakaru o te rauemi neke atu i te 40%.

2. Te pumau wera: Mā te tāpiri o te nano-alumina ki te papa uku, ka pai ake te mahi sintering o te papa, ka tino whakapai ake hoki i te pumau wera o te rauemi papa alumina, ā, ka pai ake te pumau wera mā te 2-3 ngā wā.

3. Te Matotoru: I roto i te tukanga whakaputa paura, ka taea te whakakī i te paura nano-α-Al2O3 ki roto i ngā pūwero o te paura micron alumina, ka whakaiti i te rahi o ngā pūwero; ka piki ake te pēhanga whakaputa, ka taea hoki te whakaiti i te maha o ngā pūwero, ā, ka pai ake te matotoru o ngā kukune uku i te matotoru me ngā āhuatanga hangarau o ngā uku alumina i muri i te whakahinuhinu.

4. Te whakaiti i te pāmahana whakapūmau: mā te tāpiri o te nano-a-Al2O3 ka whakatairanga i te mahi whakapūmau, ā, ka āwhina hoki ki te whakaiti i te pāmahana whakapūmau. Ina eke te pāmahana whakapūmau ki te 1450 °C, ka eke te kaha piko me te pakari whati ki te taumata teitei.

5. Mā te tāpiri i tētahi iti o te nano-a-Al2O3 ka taea te whakapai ake i ngā āhuatanga ā-pūkaha o te rauemi. Ka whakawerahia te uku alumina ki te 1450 °C. Ina 10% te nui o te tāpiri, ko te kaha piko he 415 mPa, ā, ko te pakari whati he 4.1 MPa·m^1. /2.