National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Cost Effective Method for Producing Self Supported Palladium Alloy Membranes for Use in Efficient Production of Coal Derived Hydrogen.

DE2005850467

Publication Date	2005
Page Count	16
Abstract	Efforts in this quarter were concentrated on developing vacuum processing procedures to produce thinner (less than 4 (micro)m-thick), defect-free films over larger areas (greater than 100 cm(sup 2)). We continued to test three different types of rigid supporting substrates, thermally oxidized silicon (10 cm diameter), polished borosilicate glass (10 cm diameter), and soda-lime glass (greater than 100 cm(sup 2) areas), each representing a different cost, surface roughness, and chemistry. Mechanical integrity, defect density, and release characteristics of the films, though similar for the oxidized silicon and borosilicate glass, were distinctly different for the inexpensive soda-lime (float) glass; i.e., more sensitive to surface impurities. In general, films less than 4 (micro)m-thick were shown to be very sensitive to surface condition of the supporting substrate, particularly in the case of the soda-lime glass, to the point where surface strain overrode and dominated the intrinsic bulk stresses that are produced during the growth process. Therefore, in the near term (over the next quarter), large area films greater than 100 cm(sup 2) will be produced at a minimum thickness of 5(micro)m while further development will be conducted in subsequent quarters to reduce membrane thickness in large area films.
Keywords	Copper Pallidium Pallidium alloys Coal derived alloys Hydrogen Fabrication Magnetron sputtering Polystyrene Polyvinyl alcohol Thin films Substrates
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Southwest Research Inst., San Antonio, TX.; Department of Energy, Washington, DC.; National Energy Technology Lab., Morgantown, WV.
Supplemental Notes	Sponsored by National Energy Technology Lab., Morgantown, WV. and Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200608

Cost Effective Method for Producing Self Supported Palladium Alloy Membranes for Use in Efficient Production of Coal Derived Hydrogen.

Cost Effective Method for Producing Self Supported Palladium Alloy Membranes for Use in Efficient Production of Coal Derived Hydrogen.
DE2005850467

Publication Date	2005
Page Count	16
Abstract	Efforts in this quarter were concentrated on developing vacuum processing procedures to produce thinner (less than 4 (micro)m-thick), defect-free films over larger areas (greater than 100 cm(sup 2)). We continued to test three different types of rigid supporting substrates, thermally oxidized silicon (10 cm diameter), polished borosilicate glass (10 cm diameter), and soda-lime glass (greater than 100 cm(sup 2) areas), each representing a different cost, surface roughness, and chemistry. Mechanical integrity, defect density, and release characteristics of the films, though similar for the oxidized silicon and borosilicate glass, were distinctly different for the inexpensive soda-lime (float) glass; i.e., more sensitive to surface impurities. In general, films less than 4 (micro)m-thick were shown to be very sensitive to surface condition of the supporting substrate, particularly in the case of the soda-lime glass, to the point where surface strain overrode and dominated the intrinsic bulk stresses that are produced during the growth process. Therefore, in the near term (over the next quarter), large area films greater than 100 cm(sup 2) will be produced at a minimum thickness of 5(micro)m while further development will be conducted in subsequent quarters to reduce membrane thickness in large area films.
Keywords	Copper Pallidium Pallidium alloys Coal derived alloys Hydrogen Fabrication Magnetron sputtering Polystyrene Polyvinyl alcohol Thin films Substrates
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Southwest Research Inst., San Antonio, TX.; Department of Energy, Washington, DC.; National Energy Technology Lab., Morgantown, WV.
Supplemental Notes	Sponsored by National Energy Technology Lab., Morgantown, WV. and Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200608