Fracture-resistant layered-substrates and articles including the same

A fracture-resistant article comprising:

• a substrate comprising opposing major surfaces;
• a layer disposed on a first opposing major surface of the substrate, wherein the article exhibits a hardness of at least about 10 GPa as measured by a Berkovich Indenter Hardness Test along an indentation depth of about 100 nm or greater, and is able to withstand fracture when assembled with a device that is dropped in a drop test from a height of at least 100 cm onto a drop surface, wherein the layer comprises 55 or more % by weight of a metal oxynitride, and;
• an additional layer comprising metal oxide, wherein the additional layer is disposed directly on the layer so that the layer is disposed between the substrate and the additional layer.

A portable device comprising:

• a substrate having a major surface providing a user interface and having an initial scratch resistance and an initial impact resistance;
• a layer on the major surface forming a layered-substrate exhibiting an enhanced scratch resistance and enhanced impact resistance, wherein the enhanced impact resistance comprises an average flexural strength after abrading the layered-substrate that is at least 80% of an average flexural strength before abrading the layered-substrate, and wherein said enhanced scratch resistance comprises a hardness of at least about 10 GPa, as measured by a Berkovich Indenter Hardness Test, along an indentation depth of about 100 nm or greater, wherein the layer comprises 55 or more % by weight of a metal oxynitride, and;
• an additional layer comprising metal oxide, wherein the additional layer is disposed directly on the layer so that the layer is disposed between the substrate and the additional layer.

A device comprising:

• a substrate comprising opposing major surfaces;
• a layer disposed on a first opposing major surface of the substrate to form a layered-substrate, wherein the layered-substrate is able to withstand fracture when the device is dropped from a height of at least 100 cm onto a drop surface, wherein the layer comprises 55 or more by weight of a metal oxynitride, and;
• an additional layer comprising metal oxide, wherein the additional layer is disposed directly on the layer so that the layer is disposed between the substrate and the additional layer.