Abstract:
A refractory object can include at least 10 wt% Al2O3. Further, the refractory object may contain less than approximately 6 wt% SiO2 or may include a dopant that includes an oxide of Ti, Mg, Ta, Nb, or any combination thereof. In an embodiment, at least approximately 1% of the Al2O3 in the refractory object can be provided as reactive Al2O3. In another embodiment, the refractory object may have a density of at least approximately 3.55 g/cc, a corrosion rate of no greater than approximately 2.69 mm/year, or any combination of the foregoing. In a particular embodiment, the refractory object can be used to form an Al-Si-Mg glass sheet. In an embodiment, the refractory object may be formed by a process using a compound of Ti, Mg, Ta, Nb, or any combination thereof.
Abstract translation:难熔物体可以包括至少10重量%的Al 2 O 3。 此外,难熔物体可以含有小于约6重量%的SiO 2,或者可以包括包含Ti,Mg,Ta,Nb的氧化物或其任何组合的掺杂剂。 在一个实施方案中,耐火材料中至少约1%的Al 2 O 3可以作为活性Al 2 O 3提供。 在另一个实施方案中,耐火物体可以具有至少约3.55g / cc的密度,不大于约2.69mm /年的腐蚀速率或上述的任何组合。 在一个具体实施方案中,耐火材料可用于形成Al-Si-Mg玻璃板。 在一个实施方案中,耐火物体可以通过使用Ti,Mg,Ta,Nb或其任何组合的化合物的方法形成。
Abstract:
A refractory object can include at least approximately 10 wt% A12O3 and at least approximately 1 wt% SiO2. In an embodiment, the refractory object can include an additive. In a particular embodiment, the additive can include TiO2, Y2O3, SrO, BaO, CaO, Ta2O5, Fe2O3, ZnO, or MgO. The refractory object can include at least approximately 3 wt% of the additive. In an additional embodiment, the refractory object can include no greater than approximately 8 wt% of the additive. In a further embodiment, the creep rate of the refractory object can be at least approximately 1 x 10-6 h-1. In another embodiment, the creep rate of the refractory object can be no greater than approximately 5 x 10-5 h-1. In an illustrative embodiment, the refractory object can include a glass overflow trough or a forming block.
Abstract:
A refractory object can include at least approximately 10 wt% A12O3 and at least approximately 1 wt% SiO2. In an embodiment, the refractory object can include an additive. In a particular embodiment, the additive can include TiO2, Y2O3, SrO, BaO, CaO, Ta2O5, Fe2O3, ZnO, or MgO. The refractory object can include at least approximately 3 wt% of the additive. In an additional embodiment, the refractory object can include no greater than approximately 8 wt% of the additive. In a further embodiment, the creep rate of the refractory object can be at least approximately 1 x 10-6 h-1. In another embodiment, the creep rate of the refractory object can be no greater than approximately 5 x 10-5 h-1. In an illustrative embodiment, the refractory object can include a glass overflow trough or a forming block.
Abstract translation:耐火物体可以包括至少约10重量%的Al 2 O 3和至少约1重量%的SiO 2。 在一个实施例中,耐火物体可以包括添加剂。 在一个具体的实施方案中,添加剂可以包括TiO 2,Y 2 O 3,SrO,BaO,CaO,Ta 2 O 5,Fe 2 O 3,ZnO或MgO。 耐火物体可以包含至少约3重量%的添加剂。 在另外的实施方案中,耐火物体可以包含不大于约8重量%的添加剂。 在另一个实施例中,耐火物体的蠕变速率可以至少约为1×10 -6 h -1。 在另一个实施例中,耐火物体的蠕变速率可以不大于约5×10 -5 h -1。 在说明性实施例中,耐火物体可以包括玻璃溢流槽或成型块。
Abstract:
A refractory object can include at least 10 wt% Al2O3. In an embodiment, the refractory object can further include a dopant including an oxide of a rare earth element, Ta, Nb, Hf, or any combination thereof. In another embodiment, the refractory object may have a property such that the averaged grain size does not increase more than 500% during sintering, an aspect ratio less than approximately 4.0, a creep rate less than approximately 1.0x10-5 µ/(µm x hr), or any combination thereof. In a particular embodiment, the refractory object can be in the form of a refractory block or a glass overflow forming block. The glass overflow forming block can be useful in forming an Al-Si-Mg glass sheet. In a particular embodiment, a layer including Mg-Al oxide can initially form along exposed surfaces of the glass overflow forming block when forming the Al-Si-Mg glass sheet.
Abstract:
A refractory object can include at least 10 wt % Al2O3. In an embodiment, the refractory object can further include a dopant including an oxide of a rare earth element, Ta, Nb, Hf, or any combination thereof. In another embodiment, the refractory object may have a property such that the averaged grain size does not increase more than 500% during sintering, an aspect ratio less than approximately 4.0, a creep rate less than approximately 1.0×10−5 μm/(μm×hr), or any combination thereof. In a particular embodiment, the refractory object can be in the form of a refractory block or a glass overflow forming block. The glass overflow forming block can be useful in forming an Al—Si—Mg glass sheet. In a particular embodiment, a layer including Mg—Al oxide can initially form along exposed surfaces of the glass overflow forming block when forming the Al—Si—Mg glass sheet.
Abstract:
A refractory object can include at least 10 wt% Al2O3. In an embodiment, the refractory object can further include a dopant including an oxide of a rare earth element, Ta, Nb, Hf, or any combination thereof. In another embodiment, the refractory object may have a property such that the averaged grain size does not increase more than 500% during sintering, an aspect ratio less than approximately 4.0, a creep rate less than approximately 1.0x 10-5 ?m/(?m x hr), or any combination thereof. In a particular embodiment, the refractory object can be in the form of a refractory block or a glass overflow forming block. The glass overflow forming block can be useful in forming an Al-Si-Mg glass sheet. In a particular embodiment, a layer including Mg-Al oxide can initially form along exposed surfaces of the glass overflow forming block when forming the Al-Si-Mg glass sheet.
Abstract:
A refractory object can include at least approximately 10 wt% A1203 and at least approximately 1 wt% SiO2. In an embodiment, the refractory object can include an additive. In a particular embodiment, the additive can include TiO2, Y2O3, SrO, BaO, CaO, Ta2O5, Fe2O3, ZnO, or MgO. The refractory object can include at least approximately 3 wt% of the additive. In an additional embodiment, the refractory object can include no greater than approximately 8 wt% of the additive. In a further embodiment, the creep rate of the refractory object can be at least approximately 1 x 10-6 h-1. In another embodiment, the creep rate of the refractory object can be no greater than approximately 5 x 10-5 h-1. In an illustrative embodiment, the refractory object can include a glass overflow trough or a forming block.
Abstract:
A refractory object can include at least 10 wt% Al2O3. In an embodiment, the refractory object can further include a dopant including an oxide of a rare earth element, Ta, Nb, Hf, or any combination thereof. In another embodiment, the refractory object may have a property such that the averaged grain size does not increase more than 500% during sintering, an aspect ratio less than approximately 4.0, a creep rate less than approximately 1.0x10-5 micrometer/(micrometer x hr), or any combination thereof. In a particular embodiment, the refractory object can be in the form of a refractory block or a glass overflow forming block. The glass overflow forming block can be useful in forming an Al-Si-Mg glass sheet. In a particular embodiment, a layer including Mg-Al oxide can initially form along exposed surfaces of the glass overflow forming block when forming the Al-Si-Mg glass sheet. Figure 1