Amatafari
Ibyerekeye Amatafari ya Mullite
Amatafari ya mullite ni aluminiyumu yo hejuru hamwe na mullite nkicyiciro nyamukuru cya kristu.Mubisanzwe, ibiri muri alumina biri hagati ya 65% na 75%.Usibye mullite, imyunyu ngugu irimo alumina yo hasi nayo irimo vitamine nkeya ya vitreous na cristobalite.Ibirungo byinshi bya alumina nabyo birimo umubare muto wa corundum.
Amatafari ya mullite afite imbaraga nyinshi, zishobora kugera hejuru ya 1790 ° C.Umutwaro woroshye gutangira ubushyuhe ni 1600 ～ 1700 ℃.Imbaraga zo kwikuramo ubushyuhe bwicyumba ni 70-260MPa.Kurwanya ubushyuhe bwiza.
Hano hari ubwoko bubiri bwamatafari ya mullite hamwe namatafari ya mullite.
Amatafari ya mullite acumuye akozwe muri clinker-alumina ya bauxite nkibikoresho nyamukuru, yongeramo umubare muto wibumba cyangwa bauxite mbisi nka binder, hanyuma ikorwa ikarasa.Amatafari ya mullite yahujwe akozwe muri bauxite ndende, alumina yinganda nibumba ryangiritse, hamwe namakara cyangwa kokiya nziza yongeweho nkibintu bigabanya.Nyuma yo kubumba, bikozwe mukugabanya amashanyarazi.
Crystallisation ya mullite yahujwe nini kuruta iya mullite yacumuye, kandi irwanya ihindagurika ryumuriro iruta iy'ibicuruzwa byacumuye.Ubushyuhe bwabo bwo hejuru buterwa ahanini nibiri muri alumina hamwe nuburinganire bwo gukwirakwiza icyiciro cya mullite nikirahure.
Amatafari ya mullite akoreshwa cyane cyane kumashyiga ashyushye hejuru, gutwika itanura ryumubiri no hepfo, kuvugurura itanura ryibirahure, itanura ceramic, imfuruka yapfuye kumurongo wa peteroli yamenetse, nibindi.
Ibyerekeye Sillimanite
Amatafari ya sillimanite afite ubushyuhe bwiza mubushyuhe bwinshi, kurwanya isuri yibirahure, umwanda muto kumazi yikirahure.
Ahanini bikwiranye no kugaburira umuyoboro, imashini igaburira, imashini ikurura imiyoboro hamwe nibindi bikoresho mu nganda zikirahure, zishobora kuzamura umusaruro cyane.
Ahanini bikwiranye no kugaburira umuyoboro, imashini igaburira, imashini ikurura imiyoboro hamwe nibindi bikoresho mu nganda zikirahure, zishobora kuzamura umusaruro cyane.
Ironderero ry'ibicuruzwa
| INDEX | Inshuro eshatu mullite | Mullite | Sillimanite | Mullite | ||||
| RBTM-47 | RBTM-65 | RBTM-70 | RBT-M75 | RBTM-80 | RBTA-60 | RBTFM-75 | ||
| Kunanirwa （℃） ≥ | 1790 | 1790 | 1790 | 1790 | 1810 | 1790 | 1810 | |
| Ubucucike bwinshi （g / cm3） ≥ | 2.42 | 2.45 | 2.50 | 2.60 | 2.70 | 2.48 | 2.70 | |
| Ikigaragara ni （%） ≤ | 12 | 18 | 18 | 17 | 17 | 18 | 16 | |
| Gukonjesha Ubukonje Imbaraga （MPa） ≥ | 60 | 60 | 70 | 80 | 85 | 65 | 90 | |
| Guhindura umurongo uhoraho （%） | 1400 ° × 2h | +0.1 -0.1 |
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| 1500 ° × 2h |
| +0.1 -0.4 | +0.1 -0.4 | +0.1 -0.4 | +0.1 -0.4 | +1 -0.2 | ± 0.1 | |
| Kuvunika munsi yumutwaro @ 0.2MPa （℃） ≥ | 1520 | 1580 | 1600 | 1600 | 1620 | 1600 | 1700 | |
| Igipimo cya Creep @ 0.2MPa 1200 ° × 2h （%） ≤ | 0.1 | - | - | - | - | - | - | |
| Al2O3 （%） ≥ | 47 | 64 | 68 | 72 | 78 | 60 | 75 | |
| Fe2O3 （%） ≤ | 1.2 | 0.8 | 0.8 | 0.7 | 0.7 | 1.0 | 0.5 | |
