Heat treatable low-E coated articles and methods of making same

A heat treated coated article including a coating supported by a substrate, the coating comprising:

• an infrared reflecting layer sandwiched between first and second layers, said second layer comprising an oxide of Ni;
• wherein at least said second layer comprising an oxide of Ni is oxidation graded and becomes progressively more oxidized through its thickness proceeding further from said infrared reflecting layer;
• and
• wherein the second layer comprising an oxide of Ni, that is oxidation graded, is sandwiched between and contacting the infrared reflecting layer and a nitride layer.

A heat treated coated article including a coating supported by a substrate, the coating comprising:

• a metallic infrared reflecting layer contacting and sandwiched between first and second contact layers;
• wherein at least said second contact layer is oxidation graded and becomes progressively more oxidized through its thickness proceeding further from said infrared reflecting layer;
• and
• wherein said second contact layer, that is oxidation graded, is sandwiched between and contacting the metallic infrared reflecting layer and a nitride layer.

A heat treated coated article comprising a glass substrate supporting a coating, the coating comprising:

• at least first and second dielectric layers;
• a layer comprising Ag;
• a layer comprising NiCr, wherein the layer comprising NiCr and the layer comprising Ag are provided between at least the first and second dielectric layers;
• wherein the layer comprising NiCr is more oxidized at a location further from the layer comprising Ag than at a location closer to the layer comprising Ag;
• and
• wherein the layer comprising NiCr, that is more oxidized at a location further from the layer comprising Ag than at a location closer to the layer comprising Ag, is sandwiched between and contacting said layer comprising Ag and one of said dielectric layers which comprises a nitride.

A heat treated coated article comprising a glass substrate supporting a coating, the coating comprising:

• first and second layers comprising Ag;
• a layer comprising NiCr located between the first and second layers comprising Ag, the layer comprising NiCr being closer to the first layer comprising Ag than to the second layer comprising Ag;
• wherein the layer comprising NiCr is more oxidized at a location further from the first layer comprising Ag than at a location closer to the first layer comprising Ag;
• and
• wherein the layer comprising NiCr, that is more oxidized at a location further from the first layer comprising Ag than at a location closer to the first layer comprising Ag, is sandwiched between and contacting each of the first layer comprising Ag and a layer comprising silicon nitride.

A heat treated coated article comprising a glass substrate supporting a coating, the coating comprising:

• first and second layers comprising Ag;
• a layer comprising NiCr that is closer to the first layer comprising Ag than to the second layer comprising Ag;
• wherein the layer comprising NiCr is more oxidized at a location further from the first layer comprising Ag than at a location closer to the first layer comprising Ag;
• and
• wherein the layer comprising NiCr, that is more oxidized at a location further from the first layer comprising Ag than at a location closer to the first layer comprising Ag, is sandwiched between and contacting the first layer comprising Ag and a layer comprising a nitride.

A heat treated coated article including a coating supported by a glass substrate, the coating comprising:

• first and second layers comprising Ag, the first layer comprising Ag being located closer to the glass substrate than the second layer comprising Ag;
• first, second and third layers comprising silicon nitride, wherein the first layer comprising silicon nitride is located between the glass substrate and the first layer comprising Ag, wherein the second layer comprising silicon nitride is located between the first and second layers comprising Ag, and wherein the third layer comprising silicon nitride is located over both of the first and second layers comprising Ag;
• a contact layer that is in direct contact with one of the layers comprising Ag, wherein the contact layer comprises at least one metal and is more oxidized at a location further from the layer comprising Ag that it contacts than at a location closer to the layer comprising Ag that it contacts;
• and
• wherein the contact layer, in addition to contacting one of the layers comprising Ag, also contacts one of the layers comprising silicon nitride on an opposite side thereof.