04025 Manufacture of glass ceramics transparent in the visible and infrared regions

04025 Manufacture of glass ceramics transparent in the visible and infrared regions

72 Refractories/ceramics (properties, production, applications) 12 REFRACTORIES/CERAMICS Properties, Production, Applications 95/04014 Advanced m...

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72

Refractories/ceramics

(properties,

production,

applications)

12 REFRACTORIES/CERAMICS Properties, Production, Applications 95/04014 Advanced materials ‘93, III - Transactions of the Materlals Research Sot. of Japan Vol.16. Part A.Computatlons, lassy materlals, mlcrogravlty and non-destructive testlng. Part 1 .Composltes, grain boundaries 81nanophase materlal Elsevier Science B.V., PO Box 211, 1000 AE Amsterdam, The Netherlands, D/1.995.00, $585.25, 1994, 1724 pp.

95104024 Manufacture of ceramic fibers Murakami, Y. et al., (Assigned 10) Onoda Cement Co.Lrd., JAP. Pat. JP.O6,212,516, Aug. 1994.

Manufacture of glass ceramics transparent In the visible and Infrared regions

95104025

Tropin, Y. D. et al., Steklo Keram., 1994, (3), 15-17. (In Russian) Describes how visible- and IR-transparent glass ceramics were obtained from glasses based on lignite ashes with ZrO, and Cr,O, additions in amounts of 2 and 0.5% respectively. 95104026

95/04015 Advanced materlals ‘93, Transactions of the Materlals Research Sot. of Japan Vol.14. Part A. Ceramics, powders, corrosion and advanced recessing Part B. Magnetic, fullerene, dielectric, ferroelectric, Jamond & related materials Elsevier Science B.V., PO Box 211, 1000 AE Amsterdam, The, Netherlands, Djl.lI95.00, lJS$703.00, 1994, I936 pp. Contents of Part A: Symposium C. Powder preparation. Symposium G. Corrosion/Coating of advanced materials. S mposium J. Structural ceramics. Symposium P. Advanced processing. Kymposium W. Fabrication of silicon based ceramics. Contents of Part B. Symposium L. Rare-earth iron base permanent magnet materials. Symposium M. C60 and related materials. Symposium S. Electronic materials and recessing for ULSIs. Symposium Y. Diamond and related materials. g ymposium II. Ferroelectrlcs. Symposium KK. Dielectric materials.

Advanced materials ‘93, V - Transactions of the Materials Research Sot. of Japan Vol.16. Part A. Ecomaterials. Part B. Shape memory materials and hydrldes

95104016

Elsevier Science B.V., PO Box 211, 1000 AE Amsterdam, The Netherlands, Dfr. 875.00, US$SOO.OO,1994, 1404~~.

Preparation of carbon/ceramic corn oslte materials by use of raw coke. Part 9. Propertles of C/SIC/ g ,C composites

Ogawa, 1. J. Ceram. Sot. Jpn., 1994, (102), 976-981. (In Japanese) Mechanical and thermal properties of the C/Sic/B& composites made by a normal pressure sintering process were examined as a function of Sic and B,C content.

The relative erosion-corrosion resistance of commerclal thermal sprayed coatings in a simulated circulating fluidized bed combustor environment

95104027

Wang, B. Q. and Luer, K. Proc. 7th Therm. Spray Ind. Appl. Proc. Narl. Therm. Spray Cant, ASM, Materials Park, Ohio, USA, 1994, 115-120. Bed ash and fly ash samples were obtained from circulating fluidized bed combustor boilers fired with anthractire culm, bituminous coal and biomass. The relative erosion-corrosion resistance of three commercial available thermal sprayed coatings and one weld overlay specimen was determined in an elevated temperature tester. The results indicate that the DS-200 coating has the highest erosion-corrosion resistance among the target materials due to its compactness, high density, fine grain structure and homogeneous distribution of the skeletal network of hard carbides oxides within a ductile and corrosion resistance metallic binder.

95/04017

Belchaiow Brown Coal Mine -A new source of supply for ceramic raw materials

Wisniewski, W. Szklo Ceram., 1994, 45, (l), 10-13. (In Polish) Clays, quartz sand, and silica cobbles are identified as ceramic raw materials. Presents the firing curves for kaolinite-beidellite clays.

Coal slag corrosion and strength degradation of silicon carblde/alumlna composites

95/04016

Strobel, T. M. et al., Proc. Ceram. Eng. Sci., 1994, 15, (4). 579-586. A silicon carbide particulate reinforced Al,O? matrix corn osite, produced by the directed metal oxidation process was Investigated Por chemical and mechanical behaviour in a coal combustion environment.

Comparison of the dynamic fatigue behavior of two monolithic SIC and an AI,OJSiC composite

95104019

Proc. Ceram. Eng. Sci., 1994,. 15, (4), Breder, K. and Tennery, V. J. 23-31. Two monolithic silicon carbides, NT230 siliconized SIC from Norton Saint Gobain and sinterd beta-Sic from Coors, and a silicon carbide particulate reinforced alumina ceramic composite from Lanxide, which are all candidate materials for pressurized heat exchangers in coal-fired power plants have been evaluated. The fast fracture flexure strength was measured as a function of temperature. All materials retained a sufficient strength level up to 1400°c.

95104026 A study of the reactive brazing of a silicon nitride to steel usln ternary Ag-Cu-TI: Micro-structure and mechanical strength of t1 e bonds Santacreu, P. 0. et al., Materials aI High Temperatures, 1994, 12, (4). 293-299. A study of the behaviour of Ag-Cu-Ti braze in contact with a ceramic-its wettability, evolution and reactivty-by different means of investigation gives some insight into the mechanisms involved in reactive brazing. Joints between silicon nitride and a structural steel were made by brazing under various conditions of temperature, hold time and atmosphere. The room temperature mechanical strength measured in a shear test may be correlaled to some microstructural and physiocochemical features. The heterogeneous microstructure observed for almost a11 Ag-Cu-Ti brazes is explained by immiscibility in the liquid state with an equilibrium established between Ag-Cu-rich and Cu-Ti-rich liquids.

13 SPACE HEATING AND COOLING Advanced fenestration systems for envelope thermal efflclency of commercial bulldings

95JO4029 95104020

Dense ceramic membranes for the partlal oxldatlon

of methane PETC Review, Spring 1995, (ll), p. 42. Reports that PETC is sponsoring a Cooperative Research and Development Agreement involving Amoco Chemical Company and the US Department of Energy’s Argonne National Laboratory. The research is on the development of oxygen-specific, dense-phase ceramic membranes for the conversion of methane to synthesis gas or methanol.

95104021

Development of AI,O,-MgAI,O, ceramics

Liu, C. and Yang, Y. Gaojishu Tongxun, 1994,4, (6), 18-22. (In Chinese) A120,-MgA120, ceramics can be prepared by adding 5-15% MgA&O, to Al,O, and using the injection molding process. Experiments show that this material possesses high electrical resistivity at high temperature and good resistance to corrosion of fused coal-slag and seed. It is possible that the ceramics can be used for insulation plates between electrodes.

Ferrochromium fly ash used as a pigment in ceramic glaze (Ferrochromium fly ash, usually considered as waste, can be used to produce a range of glaze colors) 95104022

Ay, N. er al., Am. Ceram. Sot. Bull., 1994, 73, (12), 47-48. 95104023

Glass-ceramic from fly ash wlth added MgO and

TiO,

Cioffi, R. er al., J. Eur. Ceram. Sot., 1994, 14, (6), 517-521. Describes the effects of the addition of MgO and TiO, to fly ash on the nucleation and crystal growth mechanisms of the derived glass, which was investigated with the aid of DTA, dilatometry, X-ray diffraction and SEM. Phase separation occurs in heating the investigated glass.

266

Fuel and Energy Abstracts July 1995

Thomas, P. C. et al., Proc. Solar ‘94, ANZSES Administrator, PO Box 124, Caulfield East, VlC.3145, Australia. The paper discusses the energy implications of glazed, unshaded commercial building facades. 95104030

Air conditioning by chilled ceilings. Part 2 - The

design Bienfait, D. and Feldmann, C. Promoclim, Dec. 1994, 25, (7), 387-399. (In French) The article examines the particular characteristics of the design of chilled ceilings. 95104031

Air-handling

energy

efficiency

and

design

practices Nilsson, L. J. Energy & Buildings, 1995, 22, (l), 1-13. With good design practices and life-cycle cost optimization, the specific fan power for individual (SFPI) fans will be between 0.5 and 1 kW m” s.‘. Data from nearly 1000 audited fans in Sweden show that the average measured SFPI weighted by drawn motor power is 1.S kW m-3 s-l, and the situation appears to be similar to other countries. Contract forms used by Swedish builders and consultants’ design practices are analyzed here to search for an explanation of the low performance of installed systems. Identified as two major barriers to efficient system design are the lack of performance specifications when procuring systems and the incentive structure in the building sector. As a consequence, duct design methods, rules of thumb, and vendor recommendation do not lead to system optimization.