1. 材料構造と構造的特徴
1.1 アルミナ含有量と結晶相の変化
( アルミナ内張り煉瓦)
Alumina lining blocks are thick, crafted refractory ceramics mainly composed of aluminum oxide (Al two O SIX), with content typically varying from 50% to over 99%, directly influencing their efficiency in high-temperature applications.
The mechanical strength, 耐食性, and refractoriness of these bricks enhance with higher alumina focus as a result of the advancement of a durable microstructure dominated by the thermodynamically secure α-alumina (diamond) stage.
During manufacturing, precursor products such as calcined bauxite, integrated alumina, or artificial alumina hydrate go through high-temperature shooting (1400 ℃– 1700 ℃), advertising stage transformation from transitional alumina kinds (c, d) to α-Al Two O THREE, which displays phenomenal solidity (9 on the Mohs range) and melting factor (2054 ℃).
The resulting polycrystalline structure contains interlocking corundum grains embedded in a siliceous or aluminosilicate glassy matrix, the make-up and quantity of which are thoroughly regulated to balance thermal shock resistance and chemical toughness.
Small ingredients such as silica (SiO₂), titania (TiO ₂), or zirconia (ZrO ₂) may be introduced to change sintering habits, boost densification, or enhance resistance to certain slags and fluxes.
1.2 Microstructure, 気孔率, and Mechanical Integrity
The efficiency of alumina lining blocks is seriously dependent on their microstructure, especially grain size distribution, pore morphology, and bonding phase attributes.
Optimum bricks display great, consistently distributed pores (closed porosity chosen) and very little open porosity (
アルミナテクノロジー株式会社, Ltdは研究開発に重点を置いています, 酸化アルミニウム粉末の製造・販売, 酸化アルミニウム製品, 酸化アルミニウムるつぼ, 等, 電子機器のサービスを提供する, セラミックス, 化学およびその他の産業. 創業以来、 2005, 同社は顧客に最高の製品とサービスを提供することに尽力してきました。. 高品質を求めるなら アルミナal2o3, お気軽にお問い合わせください.
タグ: アルミナ内張り煉瓦, アルミナ, 酸化アルミナ
すべての記事と写真はインターネットからのものです. 著作権上の問題がある場合, 削除するには時間内にご連絡ください.
お問い合わせください