Molten metal supply device and aluminum titanate ceramic member having improved non-wettability

A molten aluminum alloy contact member,

• the contact member comprising aluminum titanate ceramic base material and having in at least a part that comes into contact with the molten aluminum alloy a layer which Si content is less than that in said aluminum titanate ceramic base material.

A method of manufacturing a molten aluminum alloy contact member comprising steps:

• preparing a contact member comprising aluminum titanate ceramic base material having in at least a part of the contact member a layer containing one or more components selected from the group consisting of Al2O3, MgO and Al2TiO5, wherein the Si content of the layer is less than that in the aluminum titanate ceramic base material;
• and
• synthesizing MgAl2O4 in the layer by causing magnesium and/or aluminum to act upon the layer.

A method of manufacturing a molten aluminum alloy contact member comprising steps:

• preparing a contact member comprising aluminum titanate ceramic base material having in at least a part of the contact member a layer containing one or more components selected from the group consisting of Al2O3, MgO and Al2TiO5, wherein the Si content of the layer is less than that in the aluminum titanate ceramic base material;
• and
• contacting the layer of the contact member to a molten aluminum alloy containing magnesium in at least a part of molten aluminum alloy casting process and thereby synthesizing MgAl2O4 in the layer.

A method of manufacturing an aluminium alloy cast comprising steps:

• preparing a contact member comprising aluminum titanate ceramic base material having in at least a part of the contact member a layer containing one or more components selected from the group consisting of Al2O3, MgO and Al2TiO5, wherein the Si content of the layer is less than that in the aluminum titanate ceramic base material;
• and
• contacting the layer of the contact member to a molten aluminum alloy containing magnesium in at least a part of molten aluminum alloy casting process and thereby synthesizing MgAl2O4 in the layer.