Download or read book Study Program to Develop and Evaluate Die and Container Materials Second Quarterly Report January March 1978 For Liquid Silicon written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of the present program are to develop successful die and container materials for handling liquid silicon while it is being formed into photovoltaic cell material. These goals will hopefully be accomplished by exploring various materials configurations for their reactivity with molten silicon. The combination of unique coating structures combined with control of oxygen partial pressures may yield some previously unsuspected set of conditions which are useful for cost effective die growth or containing silicon melts. Successful experimental configurations will be scaled up into prototype dies and containers as appropriate during the third and fourth quarters of calendar 1978. Economics for large scale production of such prototypes will be defined as part of the program. Die and container material development efforts under the current program are shared among three organizations. Miami Research Laboratories (MRL)--Ceramic process development and overall program management, University of Missouri-Rolla (UMR) (Prof. P.D. Ownby)--silicon sessile drop studies with characterization of reaction products and emphasis on atmospheric effects, Chemetal Corp., Pacoima, Calif. (R. Holzl, president)--special coatings to be applied to test coupons, die shapes and containers provided by MRL and tested/characterized by UMR. MRL has hot pressed three different substrate materials for coating at Chemetal Corp. Chemetal has coated these substrates, and they in turn have been furnished to UMR for sessile drop experiments. UMR has completed assembly of its sessile drop apparatus and has begun sessile drop experiments in order to establish proper techniques and to check out operation of the assembly. Initial experiments were done with Al2O3 and SiO2 substrates, but SiC coated substrates were begun near the end of March.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy Update written by and published by . This book was released on 1978-10 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979-04 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1979 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1979 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study Program to Develop and Evaluate Die and Container Materials for the Growth of Silicon Ribbons Quarterly Report written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radioactive Waste Processing and Disposal written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1980 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1984 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study Program to Develop and Evaluate Die and Container Materials for the Growth of Silicon Ribbons Quarterly Report written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Die and container material development efforts under the current program are shared among three organizations: Miami Research Laboratories (MRL) - ceramic process development and overall program management; University of missouri-Rolla (UMR) - silicon sessile drop studies with characterization of reaction products and emphasis on atmospheric effects; and Chemetal Corporation, Pacoima, California - special coatings to be applied to test coupons, die shapes, and containers provided by MRL and tested/characterized by UMR. The completion of a major hardware delivery milestone was accomplished with the delivery of three CNTD Si3N4 coated hot pressed Si3N4 crucibles to JPL. A limited characterization of the coating was performed at MRL prior to delivery. The coatings were fine grained .cap alpha. - Si3N4. It has been determined that a two piece die design will be required. At UMR the importance of the role of oxygen in influencing the attack of the CNTD materials by molten silicon has been demonstrated. The stability is greatly enhanced by maintaining the oxygen partial pressure near or below the Si + O2 = SiO2 equilibrium.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1978 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Directory of Computer Software Applications written by and published by . This book was released on 1977 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Directory of Computer Software Applications Energy 1977 1980 written by and published by . This book was released on 1980 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Evaluation of Die and Container Materials written by Battelle Memorial Institute. Columbus Laboratories and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1978 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
