Cermet coatings applications

Another application concerning the liquid-metal-cooled fast breeder reactors (LMFBR) was studied as development of advanced control rod materials for FBR (22). Fabrication tests and out-of-pile measurements were made of B4C/Cu cermet to obtain high-performance neutron absorber materials for LMFBR. A coating layer of Cu was formed on the surface of B4C/Cu powder, and then the coated B4C... 

Although cemented carbides themselves have been replaced by other materials (ceramics, cermets, diamonds) in special applications, and although the quality improvements and coatings have increased the lifetime of tools, a steady increase in cemented carbide demand is evident. 

Combinations of ceramic and metal systems - sometimes referred to as "cermets" have excellent resistance to mechanical damage (one of the limitations associated with the use of vitreous enamel for process plant). The combination of ceramic and metal in surface coatings also provides oxidation and corrosion resistance to the underlying metal substrate. The technique is particularly applicable to regions of low temperature in air preheaters in combustion plant, i.e. near or below the acid dew point. Page [1980] reports some extensive tests. Over a five year period some 40 corrosion resisting steels, alloy steels and organic and... 

G. DErrico, R. Chiara and E. Guglielmi, PVD coatings of cermet inserts for milling applications. Surf. Coat. Technol. 1996, 86-87,... 

Flank wear and catastrophic failure are the main tool failure modes when cutting tempered martensitic stainless steel using coated cermet tools. Abrasive and adhesive mechanisms lead to the flank failure mode while a combination of abrasion, adhesion, diffusion, fracture, and plastic deformation results in catastrophic tool breakage. The application of coated carbide... 

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