Powder Metallurgy and Metal Ceramics 

About: Powder Metallurgy and Metal Ceramics is an academic journal published by Springer Science+Business Media. The journal publishes majorly in the area(s): Sintering & Carbide. It has an ISSN identifier of 1068-1302. Over the lifetime, 8762 publications have been published receiving 27745 citations. The journal is also known as: Poroshkovaya metallurgiya.

Bioceramics ― Yesterday, Today, Tomorrow

Abstract: Developments and applications of bioceramics are reviewed Used initially as alternatives to metallic materials in order to increase the biocompatibility of implants, bioceramics have become a diverse class of biomaterials presently including three basic types: bioinert high-strength ceramics; bioactive ceramics which form direct chemical bonds with bone or even with the soft tissue of a living organism; various bioresorbable ceramics which are actively included in the metabolic processes of an organism with predictable results Certain members of the different types of bioceramics are the most bioinert and biocompatible of all known biomaterials A review of the composition, physicochemical properties, and biological behavior of the principal types of bioceramic materials is given, based on the literature and some of our own data The materials include, in addition to classical sintered ceramics, bioglass-ceramics and bioglasses which are similar in composition, properties, and applications Special attention is given to structure as the main physical parameter determining not only the properties of the ceramic materials, but also their reaction with the biomedium The present status of research and development in bioceramics is characterized as a first step in the solution of complex problems at the confluence of materials science, biology, and medicine by the synthesis of “smart materials”

SYNTHESIS OF ALLOY Ti − 6Al − 4V WITH LOW RESIDUAL POROSITY BY A POWDER METALLURGY METHOD

Abstract: The possibility of producing titanium alloy Ti ― 6Al ― 4V with minimal residual porosity from mixtures of elemental powders by the method of pressing and sintering without hot deformation during or after sintering was investigated. Various powder mixtures based on titanium and titanium hydride with alloying additions of either elemental powders having different particle sizes, or master alloys, were studied. It was shown that the synthesis of Ti ― 6Al ― 4V from mixtures of titanium hydride and master alloys is optimal with respect to the attainment of high relative density. In this case the sintered material has density up to 99%, homogeneous microstructure with relatively small (100-120 μm) β-phase grains, and a low concentration of impurities, in particular oxygen, which provide a high level of mechanical properties σ(ten = 970 MPa, δ = 6%).

Tribological and corrosive characteristics of electrochemical coatings based on cobalt and iron superalloys

Abstract: The tribological and corrosive characteristics of binary and ternary alloys electrodeposited from CoW, FeW, CoMoP, and CoWP citrate solutions are studied. The tungsten content of CoW alloys reaches 31 at.% and of FeW alloys 34 at.%. The introduction of phosphorus into the alloys reduces the content of tungsten from 26.7 to 19.7 at.% (at 4.5 at.% P). The molybdenum content of CoMoP alloys is 0.7–1.0 at.% at 5 to 8 at.% P. The electrolytic tungsten alloys are nanocrystalline and subgrains are 4 to 7 nm in size. The nanohardness of tungsten-rich alloys (∼13 GPa) is comparable with that of electrolytic chromium coatings. The wear resistance of the deposited alloys is quite high and is commensurable with that of hard coatings such as TiB2, TiN, and TiAlN. The tribooxidation of FeW alloys in dry friction is revealed. The corrosion resistance of the coatings is similar to that for electrolytic chromium.

Phase diagram of the system titanium-copper

Abstract: The methods of metallographic, thermographic, x-ray diffraction, and microhardness analyses were used for studying alloys of the system titanium-copper in the concentration range 20–100 at. % Cu. On the basis of the results obtained and literature data, the phase diagram of the system Ti-Cu was plotted.