High temperature engineering

Prust, H.W. Jr., Schum, H.J., and Behning, F.P., Cold-Air Investigation of a Turbine for High-Temperature Engine Application, II—Detailed Analytical and Experimental Investigation of Stator Performance, NASA, TN D-4418, 1968. 

COLLYER, A. A., A Practical Guide to the Selection of High Temperature Engineering Thermoplastics, Elsevier Advanced Technology, London (1990)... 

The presence of the either linkages is sufficient to allow the material to be melt processed, whilst the polymer retains many of the desirable characteristics of polyimides. As a consequence the material has gained rapid acceptance as a high-temperature engineering thermoplastics material competitive with the poly-sulphones, poly(phenylene sulphides) and polyketones. They exhibit the following key characteristics ... 

Japan Atomic Energy Research Institute, High Temperature Engineering Test Reactor (HTTR), Technical Literature. 

In recent years there has been some concern in the thermosetting material industry that usage of these materials is on the decline. Certainly the total market for thermoset compounds has decreased in Western Europe. This has happened for a number of reasons. One is the image that thermosets tend to have as old-fashioned materials with outdated, slow production methods. Other reasons include the arrival of high temperature engineering plastics... 

Saito, S. et al., Design of high temperature engineering test reactor (HTTR), JAERI, 1332,1994. 

This is supported by the Japan Society for the Promotion of Science under the contract JSPS-RFTE 98P00901. This is also partly supported by the innovative basic research program in the field of high-temperature engineering using HTTR conducted by Japan Atomic Energy Research Institute. 

Figure 3 High-temperature engineering test reactor (HTTR)...

Tanaka, T., et al. (1999), Performance Test of the HTTR (High Temperature Engineering Test Reactor) , Journal of Atomic Energy Society of Japan, 41 (6), pp. 686-696. 

A competitive cell is likely to have in its V/I curve (Figure 6.5) a small IR drop (thin electrolyte film) and an extended current range before concentration polarisation sets in. In the SOFC, moreover, an expensive platinum catalyst is avoided due to high reaction rates at high temperature. Engineering for mass production is very important to the achievement of low capital cost, for example the Rolls-Royce fuel cell (Section 4.3). Its compact stack arrangement is described in US patent 2003/0,096,147 Al, an improved version of the previous patents. 

Figure 5 Progress in high-temperature engine component alloy development as a function of date, as measured by use temperature. The figure represents the service temperature at which a rupture life of lOOh would be obtained imder a stress of 138 MPa. (Ref. 34. Reproduced by kind permission of Springer Science Business Media)...

Silicon nitride (Si3N4) is an important material for high-temperature engineering applications due to its chemical stability, high-temperature strength, and excellent creep resistance. A low-temperature preparation of crystalline Si3N4 has been developed that avoids the elevated temperatures above 1200 °C, which are necessary... 

Use Electrical resistors, protective coatings at high temperatures, engine parts in space vehicles (molybdenum coated with molybdenum disilicide). 

I am sure that you will all join me in offering our best wishes of success to this new Agency. I am also very pleased to note the collaboration between this third NEA information exchange meeting and the second High-Temperature Engineering Test Reactor (HTTR) workshop by the IAEA. These two meetings have been wisely combined and there will be a special session on the third day devoted mainly to HTTR related applications. 

S. Ueta, J. Sumita, K. Emori, M. Takahashi, K. Sawa, Fuel and fission gas behavior during rise-to-power test of the High Temperature Engineering Test Reactor (HTTR) , J. Nucl. Sci. Technol., 40[9], 679, (2003). 

Knowledge of these reactions is important in many respects. Tungsten is used for high-temperature engineering components, as heater or cathode in high vacuum techniques, and as filaments in incandescent lamps. Water vapor may be responsible for ... 

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