Elements Of X Ray Diffraction

Fourier Transform Infrared Spectroscopy: Applications to Chemical Systems Vol 1 Edited by J R Ferraro and L J Basile Pp 311 (Academic: New York, San Francisco and London, 1978) $25; £1625

Fourier transform infrared spectroscopy

Get the phase diagram information you need at a price you can afford. Key Features: Peer reviewed by the Japanese Committee for Alloy Phase Diagrams. Updated through April 2000. Total number of diagrams = 2,332 (605 are new of greatly revised diagrams; among these 171 are not in Binary Alloy Phase Diagrams, 2nd Edition). Approximately 600 crystal structure tables of systems for which phase diagrams are unknown. You've been asking for a simple book containing just binary phase diagrams and crystal structure data. Desk Handbook: Phase Diagrams for Binary Alloys meets this need, and it presents the most current information. Updates the previous print compilation of binary phase diagrams by 10 years. Presents diagrams in consistent size. Shows the principal axis in atomic per cent, with a secondary axis in weight per cent. Includes an introductory article on phase diagrams and their use. Gives reference to the original literature source. This volume is the latest outgrowth of the phase diagram activity in which ASM International has been involved since 1978.

Desk handbook phase diagrams for binary alloys

A continuing quest in science is the development of materials capable of operating structurally at ever-increasing temperatures. Indeed, the development of gas-turbine engines for aircraft/aerospace, which has had a seminal impact on our ability to travel, has been controlled by the availability of materials capable of withstanding the higher-temperature hostile environments encountered in these engines. Nickel-base superalloys, particularly as single crystals, represent a crowning achievement here as they can operate in the combustors at ~1100 °C, with hot spots of ~1200 °C. As this represents ~90% of their melting temperature, if higher-temperature engines are ever to be a reality, alternative materials must be utilized. One such class of materials is Mo-Si-B alloys; they have higher density but could operate several hundred degrees hotter. Here we describe the processing and structure versus mechanical properties of Mo-Si-B alloys and further document ways to optimize their nano/microstructures to achieve an appropriate balance of properties to realistically compete with Ni-alloys for elevated-temperature structural applications.

Mo-Si-B Alloys for Ultrahigh-Temperature Structural Applications

Thermal barrier coatings (TBCs) have seen considerable advancement since the initial testing and development of thermal spray coating. Thermal barrier coatings are currently been utilized in various engineering areas which include internal combustion engines, gas turbine blades of jet engines, pyrochemical reprocessing units and many more. The development of new materials, deposition techniques is targeted at improving the life of the underlying substrate. Hence, the performance of the coating plays a vital role in improving the life of substrate. The scope for advancement in thermal barrier coatings is very high and continuous efforts are being made to produce improved and durable coatings. Thermal barrier coatings have the potential to address long term and short-term problems in gas turbine, internal combustion and power generation industry. The study of thermal barrier coating material, performance and life estimation is a critical factor that should be understood to introduce any advancement. The present review gives an overview of the thermal spraying techniques and current advancements in materials, mechanical properties, understanding the high temperature performance, residual stress in the coating, understanding the failure mechanisms and life prediction models for coatings.

https://link.springer.com/content/pdf/10.1007/s12540-020-00705-w.pdf

Thermal Barrier Coatings—A State of the Art Review

Comparison of hot corrosion behavior of nanostructured ScYSZ and YSZ thermal barrier coatings

Improvement of MoSi2 oxidation resistance via boron addition: Fabrication of MoB/MoSi2 composite by mechanical alloying and subsequent reactive sintering

The purpose of this work is the evaluation and comparison of plasma sprayed nanostructured 7 wt-% yttria stabilised zirconia (t-7YSZ) with two different sizes and 15YSZ coating with cubic phase (c-15YSZ). To this end, two kinds of 7YSZ nanogranules consisting of agglomerated nanosized particles (40–50 and 90–100 nm respectively) and 15YSZ were plasma sprayed on nickel based superalloy substrates with NiCrAlY as the bond coat. The thermal shock behaviours of all as sprayed thermal barrier coatings (TBCs) were investigated at 1000°C. The results indicated that the thermal cycling lifetime of nanostructured 7YSZ TBCs was longer than that of the nanostructured 15YSZ TBCs due to higher fracture toughness. Moreover, 7YSZ TBC with smaller particle size (labelled as non-commercial 7YSZ) shows better thermal shock resistance than 7YSZ TBC with bigger particle size (labelled as commercial 7YSZ) due to lower elastic modulus and residual stress.

Saeed Reza Bakhshi

Papers

Comparison of hot corrosion behavior of nanostructured ScYSZ and YSZ thermal barrier coatings

Improvement of MoSi2 oxidation resistance via boron addition: Fabrication of MoB/MoSi2 composite by mechanical alloying and subsequent reactive sintering

Effect of microstructure and phase of nanostructured YSZ thermal barrier coatings on its thermal shock behaviour

Preparation of nanostructured YSZ granules by the spray drying method

Synthesis and characterization of SiC ultrafine particles by means of sol-gel and carbothermal reduction methods