1999 Archive
Nov. '99
Copper - Keeping Up Appearances
Bronze has been used as a sculptors' medium since the 1500s. A look at patination, especially on outdoor sculpture, including waxes, patinas and cleaning options. The EU's "Environmental Protection and Conservation of European Cultural Heritage" has developed a successful product, OROCOMER.
Nov. '99
Copper/Cobre 99 a Success
International conference confirms producers' strong interest in new technology.
Nov. '99
Copper - Super Slim Gas Seals
Discussion of stresses on the valve seat and the valve seat insert vis à vis thermal expansion and contraction during use, and the superiority of constructing them from alloys made of copper, nickel and other elements combined to form high temperature intermetallic compounds.
Nov. '99
High Tech House Runs on Copper
How new solar cells based on a complex alloy of copper, indium, selenium, gallium and sulfur allow high-tech house to run even during local power failure.
Sep. '99
Copper Racing to Success
New formulation using a few parts per million of copper in sunflower oil proving to be as good as the best formulated mineral engine oils. Review of chemical makeup of different types of oils, pros and cons of new compound.
Sep. '99
Copper Patents
A report on 10 of the copper-related Patent Briefs submitted for 1998.
Sep. '99
Transformer Innovations
Although they have no moving parts, transformers stand outside for an average of 40 years and thus experience considerable stress. Look at a series of recent innovations in the way copper is fabricated that have greatly improved transformer design, manufacturing processes and performance.
Sep. '99
Transformers Can Contribute to Global Warming Goals
Increased attention is being focused on the savings energy-efficient transformers could make on a national scale in the US and Europe and their potential contribution to meeting internationally agreed goals for reducing global warming.
Jul. '99
The Copper Motor Rotor: New Technology for High Efficiency Motors
A look a the on-going research designed to take advantage of copper's high conductivity in such a way as to enable the creation of ultrahigh-efficiency electric motors being conducted by an industry-government consortium of which the Copper Development Association (CDA) is a member.
Jul. '99
The Swedish Program for Long Term Isolation of High Level Nuclear Waste in Copper Canisters
Why copper was chosen as the primary barrier between radwaste and the environment in the Swedish program.
Jul. '99
Shape Memory and Superelastic Alloys
A look at shape memory alloys; materials that can be deformed at one temperature but when heated or cooled, return to their original shape, i.e. the alloy appears to have a memory.
Jul. '99
The Fate of Copper Released from the Vasa Ship Museum
Look at changes in the corrosion and run-off rates of copper from the roof of the Vasa Ship museum in Stockholm and its effects on surrounding non-copper building materials.
Jul. '99
Copper's Role in Radioactive Waste Disposal III - The US Experience
Trace copper's role in the U.S. Department of Energy's (DOE) waste management program, looking at why copper and copper alloys made it to a "short list" of several viable materials and why metals other than copper were ultimately selected.
Jun. '99
ARI Adopts New Standard for Rating Direct Geoexchange Heat Pumps
New standard adopted January 1999 to establish performance criteria for comparison of direct geoexchange thermal to other methods of geothermal heating and cooling.
Jun. '99
An Outlook on Residential HVAC&R Applications in 2020
Summary of predicted results of upcoming changes in homes, speculation on impacts on residential HVAC&R equipment and applications and introduction of new research initiative (HVAC&R Research for the 21st Century, 21-CR) aimed at helping industry keep up.
Jun. '99
Copper: The Durable Metal
Look at home and industrial uses for copper based on its durability, recycleability and other properties.
Jun. '99
Copper Increases Efficiency of Solar Cells
Siemens Solar Group is testing the capabilities of a new thin-film photovoltaic module created by applying a fine film of copper indium diselenide (CIS) to a glass backing to product a less expensive semi-conductor.
Jun. '99
Scrap Terminology and Classifications
Review of the many forms and sources of scrap copper.
Apr. '99
New Research on Runoff from Copper Roofs
First report on the progress of research on how copper comes to be found in lakes, streams, and other bodies of water by the University of Connecticut, in collaboration with the International Copper Association Ltd, Copper Development Association Inc., and the Connecticut Department of Environmental Protection (Connecticut DEP).
Mar. '99
Summary of 1999 Detroit International Auto Show and Potential Changes in Copper Content
Environmental challenges, concept cars, electric/gas hybrids, what's hot today and what's in the pipeline for tomorrow.
Mar. '99
Power Quality and Your Computer
Power requirements of "sensitive electronic equipment" and how copper wiring can help ensure consistent electric power quality.
Mar. '99
Property Data on The Copper Page
A new Web site will make available an expanded version of the data in the Copper Development Association's (CDA) Standards Handbook series.
Feb. '99
New Copper Alloys - Winter 1998 Notes from CDA's Technical Service Advisory Committee December, 1998 Meeting
Notes from the Copper Development Association's (CDA) Technical Service Advisory Committee meeting of December, 1998.
Feb. '99
Copper Busbar Sizing Guide
PC based system for determining optimum sizing in a busbar system based on "life-cycle" cost considerations. Can be used alone or in conjunction with the Copper Development Association's Busbar handbook.
Feb. '99
New Life for Old Boards
Review of how Hewlett-Packard and Micro Metallics Corp. (Micromet), a San Jose-based computer recycling company and wholly-owned subsidiary of Noranda Inc., of Canada, are creating an afterlife for discarded computer products.
The Latest News
Copper-based Solar Cells:
Good for the Environment, Good for the Consumer
Copper has long been used in solar heating/hot water systems, where it is commonly used in heat exchangers. Now, it promises to become equally valuable in photovoltaic (PV) systems. These systems produce electricity through the action of sunshine on certain semiconductors, including so-called thin-film materials and the currently most promising material: copper indium gallium diselenide or CIGS.
The Presidential Dollars
Golden Collectibles or the Next Coin of the Realm? The U.S. Mint is betting it’s got it right this time. The Mint placed into circulation the first of its new golden dollar coins featuring, for the initial issue, George Washington.
High Strength Copper Steel for Rail Tank Cars to Bridges
This paper shows that the new Copper Steel has advantages over steel presently used in railroad tank cars. The higher strength leads to weight saving; higher impact fracture toughness mitigates against brittle failure particularly at low temperatures. An update of recently completed bridge using the Cu Steel is also provided.
Helpful Hints
Innovations covers technological changes involving copper.
Articles are archived by subject area (see Topics Archives on the left) and by year of publication (see Yearly Archives on the left). You can also search all of the Copper Development Association's Web site by using Search on top right of every page.
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