Xref: utzoo sci.electronics:2068 sci.physics:2847 Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!elroy!mahendo!jplgodo!wlbr!scgvaxd!trwrb!felix!ccicpg!turnkey!conexch!root From: root@conexch.UUCP (Larry Dighera) Newsgroups: sci.electronics,sci.physics Subject: Re: superconductor recipes wanted Keywords: supercondutor demo kit Message-ID: <193@conexch.UUCP> Date: 4 Feb 88 16:01:14 GMT References: <20175@amdcad.AMD.COM> Reply-To: root@conexch.UUCP (Larry Dighera) Organization: The Consultants' Exchange, Orange County, CA. (714) 842-6348 Lines: 57 In article <20175@amdcad.AMD.COM> phil@amdcad.AMD.COM (Phil Ngai) writes: > >It just hit me that I could build a superconductor in my own garage, >given access to liquid nitrogen. (don't ask why it took so long) > >Has anyone reading this done so? Got any good recipes? Sources of the >chemicals needed? (I shouldn't have any problem getting the liquid The following article appeared in December 28th issue of Electronic Engineering Times: "Do-It-Yourself" Kit Spreads Gospel Of Superconductivity To The Masses By Roland C. Wittenberg COLUMBUS, Ohio -- It had to happen sooner or later, but the recent increase in the activity in high-temperature superconducting materials made it sooner. Superconductive components Inc. (SCI), the supplier of the first commercially available improved yttrium-barium-copper-oxide super conducting powders, has rolled out a superconducting fabrication and demonstration kit for the experimenter, and students in high school of college. SCI offers two basic kits: a $50 demonstration kit and a fabrication and demonstration kit that is tagged from $200. The demonstration kit includes a prefabricated superconducting disk, a rear earth magnet and a plastic tweezer for handling the cooled disk. The only additional material needed is liquid nitrogen to cool the disk for demonstrating the Meissner effect, in which a superconducting disk can be floated over a magnet. The fabrication kit includes all the materials in the demonstration kit plus: 10 grams (or more, depending on price) of yttrium-oxide, barium-carbonate, and copper-oxide; a mortar and pestle; a crucible; a pill die for compressing the material into 1/2-inch disks; and gloves, spoons and masks. Two scanning electron microscope photographs are included for those experimenters who want to examine and compare the detailed structure of the material. In order to fabricate disks of the superconducting material, the experimenter needs the following facilities that are usually found in the school laboratory or shop: a kiln for several 12 hour cycles at 1,000 degrees C to fire and anneal the superconducting material; a vise for operating the pill die; and the liquid nitrogen source. The demonstration kit comes with a shout instruction manual, while the fabrication kit includes an extensive manual on manufacturing and testing superconducting materials. -- USPS: The Consultants' Exchange, PO Box 12100, Santa Ana, CA 92712 TELE: (714) 842-6348: BBS (N81); (714) 842-5851: Xenix guest account (E71) UUCP: conexch Any ACU 2400 17148425851 ogin:-""-ogin:-""-ogin: nuucp UUCP: ...!ucbvax!ucivax!mickey!conexch!root || ...!trwrb!ucla-an!conexch!root