Chemical Composition of Glasses, Glazes Or Vitreous
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1St Questionnaire Exemption No. 13A (Renewal Request)
Exemption Review under Directive 2011/65/EU .oeko.de www 1st Questionnaire Exemption No. 13a (renewal request) Exemption for „ Lead in white glasses used for optical applications“ Abbreviations and Definitions Cd Cadmium Cr VI Hexavalent chromium Pb Lead Background The Oeko-Institut and Fraunhofer IZM have been appointed within a framework contract1 for the evaluation of an application for granting an exemption to be included in or deleted from Annexes III and IV of the new RoHS Directive 2011/65/EU (RoHS 2) by the European Commission. Spectaris e.V has submitted the above mentioned request for exemption which has been subject to a first evaluation. The information you have referred has been reviewed and as a result we have identified that there is some information missing and a few questions to clarify concerning your request. Questions 1. The following information is specified on page 20: What is the purpose for which this patent is mentioned? The purpose is to show that there is an optical design for binoculars using Pb-containing glasses, for the reasons described in the application. An optical scope has at least one optical element which is used to image an object. An optical element is, for example, understood to mean a lens unit, a prism, or a prism system composed of multiple prisms. A lens unit is, for example, understood to mean one single lens or a unit which is composed of at least two lenses. It is now provided to make the optical element of glass, namely of at least one of the following glasses (glass types): N-BK7HT, N-SK2HT, F2HT, N-LASF45HT, SF6HT, N-SF6HTultra, N-SF6HT, SF57HTultra, N-SF57HTultra, N-SF57HT, as well as N-LASF9HT. -
Full Catalog
VOLUME 20 NUMBER 60 HIGH TEMPERATURE MATERIALS HANDBOOK Electrical - Structural Industrial Applications to 3000ºF COTRONICSCORP. SINCE 1971 © 2006 Cotronics Corp. For over thirty years, Cotronics’ Staff of Researchers, Engineers, Chemists, Technicians and Sales Assistants have provided industry with a reliable source of high quality, high temperature products specially formulated to meet the demanding specifications today’s technology requires. These products include: Duralco High Temperature Epoxies: Our unique cross linked, organic-inorganic, polymer systems have excellent adhesion, high temperature stability, dielectric properties and superior chemical, corrosion and moisture resistance. Resbond High Temperature Structural and Electrical Ceramics: These 4000ºF Machinable and Castable Ceramics, Adhesives, Potting and Encapsulating Compounds are available in a wide range of viscosities, strengths, conductivities, expansion rates and dielectric properties. Rescor Insulation Products: Tapes, Cloths, Blankets, Castable Ceramics, Putties, etc. Thermeez Maintenance and Repair Products: High Temperature Repair Putties, Gasket Formers, Thread Locking Compounds and Mold Releases are ideal for Repairs, Corrosion Control, Surface Rebuilding, etc. High Purity Materials: Ceramics, Metals, Oxides, Carbides, etc. for Research and Production applications. Cotronics offers the High Temperature solutions required to satisfy the most difficult applications in the Aerospace, Automotive, Semi-Conductor, Instrumentation, Appliances, Chemical Processing Industries. Cotronics provides the upmost in Excellence and Quality Control in its fully computerized manufacturing facilities. CALL COTRONICS FOR: Terms and Conditions Minimum Billing: $100.00 for rated accounts. Additional Technical Information Same Day Orders: Are subject to a $45.00 Expedited Fee. Adhesive Suggestions Foreign Shipments: Are subject to a $60.00 Handling Charge. Canadian Shipments: Are subject to a $25.00 Handling Charge. Custom Solutions Payments Made by Bank Transfer: Add $25.00 for Bank Charges. -
CASE 6 Shelf 1 #1 Fancy Opaque Glass 1982.65 WATER Challinor Taylor and Paneled Flower Funds Provided PITCHER Co., Pittsburgh, PA, Pattern, No
CASE 6 Shelf 1 #1 Fancy Opaque Glass 1982.65 WATER Challinor Taylor and Paneled Flower Funds provided PITCHER Co., Pittsburgh, PA, pattern, No. 23, by the Fifth patent June 1, 1886 pressed purple slag Annual Benefit opaque soda-lime Antiques Show glass Shelf 1 #2 Fancy Opaque Glass 1990.78 ELECTRIC New Martinsville Peachblow or Gift of Mrs. LIGHT Glass Mfg. Co., New Sunburst line, shaded Betty Woods SHADE Martinsville, WV, pink mold-blown Daniel about 1905-1910 glass with iridescent gold lining 1982.183AB BRIDE’S New Martinsville New Martinsville Gift of Mrs. BOWL ON Glass Mfg. Co., New Peachblow, pink Betty Woods STAND Martinsville, WV, shaded to white Daniel about 1905-1910 mold-blown glass, silver plated stand Shelf 1 #3 Opalescent and Iridescent 1981.138 BERRY Northwood Glass Diamond Funds provided BOWL Company, Indiana, Spearhead pattern, by Mr. Arthur B. PA, about 1900 deep blue shaded to Beaumont opalescent pressed glass 1990.109.1 TWO Dugan Glass Co., Diamond Museum 1990.109.2 MATCHING Indiana, PA, about Spearhead pattern, purchase INDIVIDUAL 1910 deep blue shaded to BERRY opalescent pressed BOWLS glass Shelf 1 #4 Opalescent and Iridescent 1000.164 DISH Dugan Glass Co., Peach opalescent Museum Indiana, PA, about pressed soda-lime purchase 1910-1914 glass with iridescent finish CASE 6 - Page 1 1989.72 BOWL Dugan Glass Co., Petals and Fans Museum Indiana, PA, about pattern on front with purchase 1910-1914 Jeweled Heart pattern on back, amethyst pressed soda-lime glass with deep iridescent finish 1994.39 PLATE Dugan Glass Co., Persian -
Fluoride-Fiber-Based Side-Pump Coupler for High-Power Fiber Lasers at 2.8 Μm
2340 Vol. 43, No. 10 / 15 May 2018 / Optics Letters Letter Fluoride-fiber-based side-pump coupler for high-power fiber lasers at 2.8 μm 1, 2 1 1 2,3 1 C. A. SCHÄFER, *H.UEHARA, D. KONISHI, S. HATTORI, H. MATSUKUMA, M. MURAKAMI, 1,4 2,5 S. SHIMIZU, AND S. TOKITA 1Mitsuboshi Diamond Ind. Ltd. 32-12 Koroen, Settsu, Osaka 566-0034, Japan 2Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan 3Current Address: Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Sendai 980-8579, Japan 4Current Address: Spectronix Corporation, 3-28-15, Tarumi-cho, Suita, Osaka 564-0062, Japan 5e-mail: [email protected] *Corresponding author: [email protected] Received 1 March 2018; revised 18 April 2018; accepted 18 April 2018; posted 23 April 2018 (Doc. ID 324956); published 9 May 2018 A side-pump coupler made of fluoride fibers was fabricated although side pumping would benefit such applications, the and tested. The tested device had a coupling efficiency of active fiber was still end pumped by a laser diode (LD), and 83% and was driven with an incident pump power of up the seed light was injected via a dichroic mirror into the to 83.5 W, demonstrating high-power operation. Stable la- amplifying fiber. ser output of 15 W at a wavelength of around 2.8 μm was In this Letter, we fabricate an FF-based side-pump coupler achieved over 1 h when using an erbium-doped double-clad (SPC) by splicing the power-delivering multimode fiber onto fiber as the active medium. -
Leaded X-Ray Glass Submittal
FULL LINE OF radiation SHIELDING PRODUCTS Radiation Protection Products (RPP) manufactures a full line of radiation ALL SHIELDING TERMS AND shielding products. They include Lead PRODUCTS PROVIDED CONDITIONS OF SALES Lined Doors (solid core wood, lead lined, and steel strapped), Lead Lined MEET THE FOLLOWING Prices in U.S. Dollars Drywall (otherwise known as Lead Prices are in U.S. dollars, F.O.B. factory, Lined Sheetrock or Lead Lined SPECIFICATIONS: Chapel Hill, Tennessee, unless other- Gypsum Wallboard) and Lead Lined Sheet Lead wise specified. Prices, specifications, Plywood, Leaded X-ray Glass, Lead Sheet Lead shall meet or exceed and terms of sales are subject to Lined Frames for borrowed lites and the Federal Specification QQL-201 F change without notice. All orders are doors, pass boxes and many other lead Grade C and ASTM B749-03 Standard subject to review prior to acceptance. products. Specification for Lead and Lead Alloy Terms Strip, Sheet and Plate Products, see We also manufacture and install Net 30 days on established accounts NCRP reports #33, #35, #49 and Radiation Therapy Vault Doors (Neutron with approved credit. Visa/MasterCard. #147. Doors) and Interlocking Lead Bricks. Credit Gypsum Board Radiation Protection Products uses only New accounts, pending credit approval, Gypsum Board shall meet or exceed the finest quality material and exercises may be immediately expedited by ASTM C1396, ASTM C840, and Federal the best quality control possible. enclosing a check, wire transfer or credit Specification SS-L-30D Grade X Type III. card. To facilitate opening of accounts, We offer a top quality line of lead Leaded Glass please forward your bank and four (4) shielding products at a competitive Leaded Glass shall meet or exceed trade references. -
Lead Glass Filled Star Rubies Reportedly from Madagascar a Preliminary Examination and a Comparison with Star Rubies from Other Deposits
Lead glass filled star rubies reportedly from Madagascar A preliminary examination and a comparison with star rubies from other deposits. Vincent Pardieu, Pantaree Lomthong and Nick Sturman GIA Laboratory, Bangkok Figure 1: A selection of 34 lead glass filled star rubies showing the color range of the new material from pink to red and to near black. The stones in the photograph weight from approximately 1 to 20 carats. The photograph was taken using a slightly diffused natural sunlight in Bangkok, Thailand. The background used is page 17 of “Gemstone Enhancement” by Kurt Nassau (1984). Photo: V. Pardieu / GIA Laboratory Bangkok http://www.gia.edu/research‐resources/news‐from‐research/index.html Introduction: Meeting the Thai burner. In January 2010 the GIA Laboratory Bangkok was contacted by Mr. Mahithon Thongdeesuk (Figure 2), from “Jewel enhancement by Mahiton Co. Ltd” in Bangkok, a Thai burner involved in the development of the lead glass treatment since 2002. He informed the authors that he had finished developing a new product which he will soon release in the Thai market: “Lead glass filled star rubies” (Figure 1, Figure 5 and Figure 6) Mr. Thongdeesuk informed the GIA gemologists visiting his factory that the material used for this treatment originated from Madagascar. He also told us that he and his partners have now finished treating and polishing about 100 kilos of this new lead glass treated product which will soon be available in the market at a fraction of the price of similar looking untreated Figure 2: Thai gemstone burner Mr. Thongdeesuk at his gem material. -
UV-Transmitting Step-Index Fluorophosphate Glass Fiber
Optical Materials 64 (2017) 524e532 Contents lists available at ScienceDirect Optical Materials journal homepage: www.elsevier.com/locate/optmat UV-transmitting step-index fluorophosphate glass fiber fabricated by the crucible technique * Gustavo Galleani a, b, , Yannick Ledemi b, Elton Soares de Lima Filho b, Steeve Morency b, Gaelle€ Delaizir c,Sebastien Chenu c, Jean Rene Duclere c, Younes Messaddeq b a Institute of Chemistry, Sao~ Paulo State University/UNESP, Araraquara, SP, Brazil b Center for Optics, Photonics and Lasers, Laval University, Quebec, QC, Canada c Laboratoire de Sciences des Procedes Ceramiques et de Traitements de Surface, Universite de Limoges, Limoges, France article info abstract Article history: In this study, we report on the fabrication process of highly pure step-index fluorophosphate glass optical Received 24 October 2016 fibers by a modified crucible technique. High-purity fluorophosphate glasses based on 10 mol% of barium Received in revised form metaphosphate and 90 mol% of metal fluorides (AlF3eCaF2eMgF2eSrF2) have been studied in order to 28 December 2016 produce step-index optical fibers transmitting in the deep-ultraviolet (DUV) region. The characteristic Accepted 4 January 2017 temperatures, viscosity around softening temperature and optical transmission in the UVevisible region Available online 17 January 2017 of the prepared bulk glasses were characterized in a first step. The selected glass compositions were then used to prepare core-cladding optical preforms by using a modified built-in casting technique. While Keywords: fi Glass uncontrolled crystallization of the ber was observed during the preform stretching by using the con- fi fi Fibers ventional method, we successfully obtained crystal-free ber by using a modi ed crucible technique. -
Quarterly Journal of the All India Glass Manufacturers' Federation
Vol. 3 | No. 4 | January - March 2016 Quarterly Journal of The All India Glass Manufacturers’ Federation Bi-lingual www.aigmf.com Technical Articles Prof. (Dr.) A. K. Bandyopadhyay Prof. (Dr.) A Sustainable 50 for postage postage for 50 ` ASS ASS www.aigmf.com Building and Packaging material An Publication - GlASS Gl Gl 500 (within India) + + India) (within 500 ` ` Kanch | Vol. 3 | No. 4 | January-March 2016 2 Overseas: US$ 60 (including postage and bank charges) bank and postage (including 60 US$ Overseas: Order Print Copies: Print Order Price: Price: www.aigmf.com President SANJAY GANJOO Sr. Vice President ARUN KUMAR DUKKIPATI Vice President RAJ KUMAR MITTAL Hon. General Secretary BHARAT SOMANY Hon. Treasurer SANJAY AGARWAL Member Editorial Board A K Bandyopadhyay Quarterly Journal of THE ALL INDIA GLASS MANUFACTURERS’ FEDERATION Former Principal, Govt. College of Engineering & Ceramic Technology-GCECT, Kolkata DEVENDRA KUMAR Prof. & HOD, Dept. of Ceramic, Indian Institute of Technology (Banaras Hindu University) Vol. 3 | No. 4 | January-March 2016 K K SHARMA President, NIGMA and Plant Head, HNG Neemrana, Rajasthan MEMBER ASSOCIatIONS EASTERN INDIA GLASS MANUFACTURERS’ ASSOCIATION (EIGMA) Contents c/o La Opala RG Ltd. Chitrakoot, 10th Floor, 230 A, A.J.C. Bose Road From President's Desk 5 Kolkata - 700 020 President - Sushil Jhunjhunwala Glass as Vital Building Material for Smart / Solar Cities NORTHERN INDIA GLASS MANUFACTURERS’ ASSOCIATION (NIGMA) & c/o Hindustan National Glass & Industries Limited 6 Post Office - Bahadurgarh, Jhajjar, Haryana-124 507 Book Launch: “Glass - A Sustainable Building and Packaging President - KK Sharma Material” Vice President - Jimmy Tyagi Honorary General Secretary - NN Goyal Glass News 13 Secretary & Treasurer - JB Bhardwaj SOUTH INDIA GLASS MANUFACTURERS’ ASSOCIATION (SIGMA) Smart City and Glasses for Flat-Screen Products – Part II 21 c/o AGI Glasspac (An SBU of HSIL Ltd.) Glass Factory Road, Off. -
Why Must We Test Lead Crystal Glass?
What is Lead Crystal Glass? Lead crystal glass is one of the four main categories of glass primarily used for decorative purposes. It becomes ‘lead’ glass when lead oxide is added during the manufacturing stage to replace calcium oxide. The lead is added as it reduces the temperature of the molten material to allow for increased ‘work time’ with the glass. The addition of lead also provides an improved look to the finished product through increasing the refractive index and density of the glass, making it a clearer, less flawed substance. The term ‘crystal’ is misleading as there is no crystal structure within the glass as it is an amorphous solid, meaning that the arrangement of the elements in glass is variable and held together by tight chemical bonds. Traditional English full lead crystal contains a minimum of 30% lead oxide, but any glass containing at least 24% lead oxide is classified as lead crystal. Glass which contains less than 24% lead oxide is known as crystal glass. The lead is locked away within the chemical structure of the glass and should not pose a risk to human health. A typical composition for lead crystal glass is: 25% oxygen, 30% silicon, 25% lead, 10% sodium or potassium, 10% calcium, 1% other components such as iron, tin and fluorine – which are added to alter the chemical and physical properties of the glass. Lead crystal glassware has lost popularity in recent years due to the potential health risks of lead products. Now, more commonly ‘reduced-lead’ or ‘lead-free’ crystal glass is manufactured using zinc oxide, potassium oxide or barium oxide to substitute the lead to produce a similar product. -
Photonic Glass-Ceramics: Consolidated Outcomes and Prospects Brigitte Boulard1, Tran T
Photonic glass-ceramics: consolidated outcomes and prospects Brigitte Boulard1, Tran T. T. Van2, Anna Łukowiak3, Adel Bouajaj4, Rogéria Rocha Gonçalves5, Andrea Chiappini6, Alessandro Chiasera6, Wilfried Blanc7, Alicia Duran8, Sylvia Turrell9, Francesco Prudenzano10, Francesco Scotognella11, Roberta Ramponi11, Marian Marciniak12, Giancarlo C. Righini13,14, Maurizio Ferrari6,13,* 1 Institut des Molécules et Matériaux du Mans, UMR 6283, Equipe Fluorures, Université du Maine, Av. Olivier Messiaen, 72085 Le Mans cedex 09, France. 2 University of Science Ho Chi Minh City, 227 Nguyen Van Cu, Dist.5, HCM Vietnam. 3 Institute of Low Temperature and Structure Research, PAS, ul. Okolna 2, 50-950 Wroclaw, Poland. 4 Laboratory of innovative technologies, LTI, ENSA–Tangier, University Abdelmalek Essaâdi, Tangier, Morocco. 5 Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo - Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto/SP, Brazil 6 CNR-IFN, CSMFO Lab., Via alla Cascata 56/c, Povo, 38123 Trento, Italy. 7 Université Nice Sophia Antipolis, CNRS LPMC, UMR 7336, 06100 Nice, France. 8 Instituto de Ceramica y Vidrio (CSIC), C/Kelsen 5, Campus de Cantoblanco, 28049 Madrid, Spain. 9 LASIR (CNRS, UMR 8516) and CERLA, Université Lille 1, 59650 Villeneuve d’Ascq, France. 10 Politecnico di Bari, DEI, Via E. Orabona 4, Bari, 70125, Italy. 11 IFN-CNR and Department of Physics, Politecnico di Milano, p.zza Leonardo da Vinci 32, 20133 Milano, Italy 12 National Institute of Telecommunications, 1 Szachowa Street, 04 894 Warsaw, Poland. 13 Centro di Studi e Ricerche “Enrico Fermi”, Piazza del Viminale 2, 00184 Roma, Italy. 14 MipLAB. IFAC - CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy. -
Eliminating Crystals in Non-Oxide Optical Fiber Preforms and Optical
Eliminating Crystals in Non‐Oxide Optical Fiber Preforms and Optical Fibers Short Running Title Gravity and Magnetic Effects on Glass Author’s Names and Affiliations Dennis S. Tucker Michael R. LaPointe NASA NASA/ZP10 EM20 National Space Science and Technology Center MSFC, Alabama, USA, 35812 320 Sparkman Drive Telephone: 256‐544‐7022 Huntsville, Alabama 35805 FAX: 256‐961‐9604 Telephone: 256‐961‐7555 [email protected] [email protected] Abstract Non‐oxide fiber optics such as heavy metal fluoride and chalcogenide glasses are extensively used in infrared transmitting applications such as communication systems, chemical sensors, and laser fiber guides for cutting, welding and medical surgery. The addition of rare earths such as erbium, enable these materials to be used as fiber laser and amplifiers. Some of these glasses however are very susceptible to crystallization. Even small crystals can lead to light scatter and a high attenuation coefficient, limiting their usefulness. Previously two research teams found that microgravity suppressed crystallization in heavy metal fluoride glasses. Looking for a less expensive method to suppress crystallization, ground based research was performed utilizing an axial magnetic field. The experiments revealed identical results to those obtained via microgravity processing. This research then led to a patented process for eliminating crystals in optical fiber preforms and the resulting optical fibers. In this paper, the microgravity results will be reviewed as well as patents and papers relating to the use of magnetic fields in various material and glass processing applications. Finally our patent to eliminate crystals in non‐oxide glasses utilizing a magnetic field will be detailed. -
Table of Contents
Halide Glasses I ISBN(softcover): 978-0-87849-540-5 ISBN(eBook): 978-3-0357-0420-4 Table of Contents Preparation and Properties of High Optical Quality Bulk Fluoride Glasses M.G. Drexhage 1 Preparation and Purification of Fluoride Glass Starting Materials M. Robinson 19 Dry Box Melting of Heavy Metal Fluoride Glasses:Apparatus,Techniques and Problems M.J. Suscavage, J.J. Hutta, M.G. Drexhage, N. Perazzo, R. Mossadegh and C.T. Moynihan 35 Chemical Vapor Purification of Fluorides R.C. Folweiler and D.E. Guenther 43 Selective Complexing and Ion Exchange for Purification of Fluoride Glass Components P.E.R. Nordquist and A.H. Singer 49 An Extraction Process for Purifying Fluoride Glass Starting Materials C.F. Fisher, D.C. Tran, P. Hart and G.H. Sigel Jr. 51 Synthesis of Ultra-Pure Zirconium Tetrafluoride from Zirconium Tetraborohydride M. Bridenne, G. Folcher and H. Marquet-Ellis 59 Impurity Analysis of Fluoride Glass Starting Materials H. Poignant, J. Le Mellot, Y. Bossis, A. Rupert, M. Minier and M. Gauneau 63 Fabrication of Fluoride Glasses by Chemical Vapor Deposition D.A. Thompson 69 Purification and Analysis of Zirconium and Hafnium Tetrafluoride M.F. Churbanov, N.K. Rudnevsky, A.M. Tumanova, V.I. Zvereva and Y.V. Maslov 73 Removal of Surface Hydroxide from Fluoride Glass Components Below 500°C P.H. Klein 77 Fluoride Glass Evaporation H. Poignant, J. Le Mellot and Y. Bossis 79 Purification of Ba and Rare Earth Fluorides for Optical Fibers D.R. Gabbe 85 Synthesis Properties and Crystallization Behavior of PbF2-AIF3-LaF3-ZrF4 System Glasses J.J.