Recent years have witnessed many breakthroughs in research on two-dimensional (2D) nanomaterials, among which is hexagonal boron nitride (h-BN), a layered material with a regular network of BN hexagons. This review provides an insight into the marvellous nano BN flatland, beginning with a concise introduction to BN and its low-dimensional nanostructures, followed by an overview of the past and current state of research on 2D BN nanostructures. A comprehensive review of the structural characteristics and synthetic routes of BN monolayers, multilayers, nanomeshes, nanowaves, nanoflakes, nanosheets and nanoribbons is presented. In addition, electronic, optical, thermal, mechanical, magnetic, piezoelectric, catalytic, ecological, biological and wetting properties, applications and research perspectives for these novel 2D nanomaterials are discussed.

Nano boron nitride flatland.

This review critically examines the current state of graphene reinforced metal (GNP-MMC) and ceramic matrix composites (GNP-CMC) The use of graphene as reinforcement for structural materials is motivated by their exceptional mechanical/functional properties and their unique physical/chemical characteristics This review focuses on MMCs and CMCs because of their technological importance for structural applications and the unique challenges associated with developing high-temperature composites with nanoparticle reinforcements The review discusses processing techniques, effects of graphene on the mechanical behaviour of GNP-MMCs and GNP-CMCs, including early studies on the tribological performance of graphene-reinforced composites, where graphene has shown signs of serving as a protective and lubricious phase Additionally, the unique functional properties endowed by graphene to GNP-MMCs and GNP-CMCs, such as enhanced thermal/electrical conductivity, improved oxidation resistance, and excellent bi

Graphene reinforced metal and ceramic matrix composites: a review

Mechanical properties and biomedical applications of a nanotube hydroxyapatite-reduced graphene oxide composite

http://lbmd.coe.pku.edu.cn/PDF/2014carbon.pdf

Graphene oxide/hydroxyapatite composite coatings fabricated by electrophoretic nanotechnology for biological applications

Bioactive hydroxyapatite/graphene composite coating and its corrosion stability in simulated body fluid

A tough graphene nanosheet/hydroxyapatite composite with improved in vitro biocompatibility

Fracture toughness and toughening mechanisms in a (ZrB2-SiC) composite reinforced with boron nitride nanotubes and boron nitride nanoplatelets

The invention discloses a nano composite biological coating and a preparation method of the nano composite biological coating. The nano composite biological coating comprises nano hydroxyapatite and graphene. The preparation method comprises the following steps of: weighing raw materials in different mixing ratios, performing ultrasonic dispersion and mixing; spraying and granulating the mixed powder to obtain nano hydroxyapatite-graphene micro agglomerated particles; and performing plasma spraying, and thus obtaining the hydroxyapatite-graphene nano composite biological coating. The nano composite biological coating has good antibacterial performance, bone induction performance and capability of promoting attachment of bone cells on the surface. Plasma spraying is adopted in the preparation method for the nano composite biological coating; and compared with the conventional coating preparation method, the preparation method has the advantages of improving the preparation efficiency and greatly reducing the processing cost.

Nano composite biological coating and preparation method thereof

The invention provides a method for manufacturing a superhigh temperature ceramic special-shape member through plasma spraying near-net-forming. The manufacture method comprises the following steps: weighing nanometer powder raw materials in different mixing proportions, carrying out ultrasonic dispersion, full mixing, spray granulation and drying, and screening out micrometer agglomerated particles with a particle size of 40 to 70 mu m as a plasma spraying feed; processing high-purity high-strength graphite into a core mould, polishing the core mould, and carrying out plasma spraying near-net-forming; and carrying out hot isostatic pressing densification on a green body of a superhigh temperature ceramic special-shape member obtained after near-net-forming, and removing the core mould in a mechanical vibration way so as to obtain BNNT/(ZrB2-SiC) superhigh temperature ceramic special-shape member. The invention discloses a multi-scale cooperation toughening and coupling method designed for internal cooperative toughening of flat particle interfaces and flat particles; and the manufacture method provided in the invention integrates the traditional processes of preparation of a superhigh temperature ceramic composite material and processing and forming of a member together, which enables forming efficiency to be improved and processing cost to be saved.

Method for manufacturing superhigh temperature ceramic special-shape member through plasma spraying near-net-forming

The invention provides a ZrB2-based superhigh temperature ceramic nano composite material and a preparation method thereof. The composite material comprises the following components: nano ZrB2 particles, nano SiC particles and multi-wall boron nitride nano tubes (BNNTs). The preparation method comprises the following steps: weighing raw materials in different mixing ratios and performing ultrasonic dispersion for 30 minutes; performing ball-milling; after full ball-milling and mixing, drying to prepare nano composite powder; weighing a proper amount of nano composite powder and putting the nano composite powder into a graphite mold, prepressing the nano composite powder, and keeping the pressure for 10 minutes; putting the prepressed mold in discharge plasma sintering equipment, applying axial prepressing force of 18 to 20 MPa, vacuumizing to 5Pa, raising the temperature to 1,350 DEG C at the temperature rise speed of 100 to 150 DEG C per minute, raising the axial pressure to 40 MPa, continuing to raise the temperature to 1,450 to 1,550 DEG C and keeping the temperature for 6 to 10 minutes, and performing furnace cooling to obtain BNNT/(ZrB2-SiC) superhigh temperature ceramic nano composite material. The ZrB2-based superhigh temperature ceramic nano composite material is reasonable in design, and the method for preparing the ZrB2-based superhigh temperature ceramic nano composite material is easy in technical operation, high in efficiency and high in safety.

Chunguang Yue

Papers

A tough graphene nanosheet/hydroxyapatite composite with improved in vitro biocompatibility

Fracture toughness and toughening mechanisms in a (ZrB2-SiC) composite reinforced with boron nitride nanotubes and boron nitride nanoplatelets

Nano composite biological coating and preparation method thereof

Method for manufacturing superhigh temperature ceramic special-shape member through plasma spraying near-net-forming

ZrB2-based superhigh temperature ceramic nano composite material and preparation method thereof