Recent advances of superhard nanocomposite coatings: a review

Predicting new superhard phases

“…WN 2 . In an attempt to design superhard phases within the compounds formed by heavy transition metals and light elements, we also explored the phase diagram of WN 2 .…”

“…Hardness, in general, is understood as the extent to which a given solid resists both elastic and plastic deformations [1]. Hard materials usually refer to materials with hardness (here referred to Vickers hardness) greater than 20 GPa, while materials with hardness above 40 GPa are classified as superhard materials [2]. Experimentally, (nano)diamond remains the hardest known substance with the hardness reaching 100-160 GPa, though over the past decades extensive experimental efforts have been devoted to exploring new materials that could be harder than diamond.…”

Features of self‐organization in nanostructuring PVD coatings on a base of polyvalent metal nitrides under severe tribological conditions

“…Nanostructured coating application does not automatically result in the improvement of volumetric properties. [2] However under severe frictional conditions, the processes that are taking place on the actual surface and are related to physical-chemical interaction with counterbody and environment are starting to play a decisive role [3] under severe frictional conditions. The role of the coatings' nanoscaled structure for this category of processes could be extremely beneficial.…”

Potensi Pembentukan Lapisan Super Dan Ultra Keras Senyawa Komposit Nitrida Menggunakan Kaidah Elektrodeposisi

“…Sifat alamiah suatu material yang terlalu keras cenderung bersifat rapuh atau getas. Karena itu sifat tangguh material juga menjadi perhatian dalam rekayasa lapisan komposit superkeras [24]. Pembentukan lapisan komposit berbasis nikel-nitrida diharapkan selain mampu menghasilkan tingkat kekerasan yang tinggi namun juga diharapkan mampu memiliki ketangguhan.…”