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Results for “Cu-Sn-Ti”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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6 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2019

Influence of TiH{sub 2} on Interfacial Reaction Features Between Cubic Boron Nitride and Cu-Sn-Ti Active Filler Metals

Cubic boron nitride (CBN) grains are brazed by Cu-Sn-Ti filler metal in vacuum at 1223 K. Wetting behaviors, reaction layer features, and elemental distribution characteristics have been systematically investigated through scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The results show that when the TiH{sub 2} content is 5 wt pct, virtually no sharp-edged, partially coated, and uncoated CBN grains can be observed, indicating that adequate wetting could be achieved. Moreover, a continuous reaction layer with uniform thickness (1.30 μm) consisting of TiN, TiB{sub 2}, and TiB is obtained, which indicates that large numbers of TiN, TiB{sub 2}, and TiB compounds could have been formed at the interface. However, when the TiH{sub 2} content exceeds 5 wt pct, the thickness of the reaction layer is no longer significantly expanding and excessive Ti present in the matrix will lower the volume percentage of Cu{sub 3}Sn{sub 1} phase, which will reduce the bonding strength of the brazing samples. Wear tests indicate that the minimum weight loss also occurs at 5 wt pct TiH{sub 2}.

36 MATERIALS SCIENCE↗
DOE OSTI2017

Materials Data on TiCuSn by Materials Project

CuSnTi crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Ti is bonded in a 12-coordinate geometry to two equivalent Ti, six equivalent Cu, and six equivalent Sn atoms. Both Ti–Ti bond lengths are 3.02 Å. There are three shorter (2.88 Å) and three longer (3.05 Å) Ti–Cu bond lengths. There are three shorter (2.95 Å) and three longer (2.98 Å) Ti–Sn bond lengths. Cu is bonded in a 11-coordinate geometry to six equivalent Ti and five equivalent Sn atoms. There are a spread of Cu–Sn bond distances ranging from 2.56–3.21 Å. Sn is bonded in a 11-coordinate geometry to six equivalent Ti and five equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ti5CuSn3 by Materials Project

CuSn3Ti5 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Ti sites. In the first Ti site, Ti is bonded to two equivalent Cu and five equivalent Sn atoms to form a mixture of distorted face, edge, and corner-sharing TiCu2Sn5 pentagonal bipyramids. Both Ti–Cu bond lengths are 2.62 Å. There are a spread of Ti–Sn bond distances ranging from 2.80–2.92 Å. In the second Ti site, Ti is bonded in a 8-coordinate geometry to two equivalent Ti and six equivalent Sn atoms. Both Ti–Ti bond lengths are 2.77 Å. All Ti–Sn bond lengths are 2.91 Å. Cu is bonded to six equivalent Ti atoms to form distorted face-sharing CuTi6 octahedra. Sn is bonded in a 9-coordinate geometry to nine Ti atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ti10CuSn6 by Materials Project

Ti10CuSn6 crystallizes in the trigonal P-31m space group. The structure is three-dimensional. there are three inequivalent Ti sites. In the first Ti site, Ti is bonded in a 8-coordinate geometry to two equivalent Ti and six equivalent Sn atoms. Both Ti–Ti bond lengths are 2.75 Å. All Ti–Sn bond lengths are 2.87 Å. In the second Ti site, Ti is bonded in a 8-coordinate geometry to two equivalent Ti and six equivalent Sn atoms. All Ti–Sn bond lengths are 2.90 Å. In the third Ti site, Ti is bonded in a 6-coordinate geometry to one Cu and five equivalent Sn atoms. The Ti–Cu bond length is 2.57 Å. There are a spread of Ti–Sn bond distances ranging from 2.78–2.95 Å. Cu is bonded in an octahedral geometry to six equivalent Ti atoms. Sn is bonded in a 9-coordinate geometry to nine Ti atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TiCu2Sn by Materials Project

Cu2SnTi is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ti is bonded in a distorted body-centered cubic geometry to eight equivalent Cu and six equivalent Sn atoms. All Ti–Cu bond lengths are 2.72 Å. All Ti–Sn bond lengths are 3.14 Å. Cu is bonded in a body-centered cubic geometry to four equivalent Ti and four equivalent Sn atoms. All Cu–Sn bond lengths are 2.72 Å. Sn is bonded in a 8-coordinate geometry to six equivalent Ti and eight equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TiCu2Sn by Materials Project

Cu2SnTi crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ti is bonded in a 10-coordinate geometry to eight equivalent Cu and two equivalent Sn atoms. All Ti–Cu bond lengths are 2.68 Å. Both Ti–Sn bond lengths are 2.93 Å. Cu is bonded in a 9-coordinate geometry to four equivalent Ti, one Cu, and four equivalent Sn atoms. The Cu–Cu bond length is 2.55 Å. All Cu–Sn bond lengths are 2.88 Å. Sn is bonded in a distorted q6 geometry to two equivalent Ti and eight equivalent Cu atoms.

36 MATERIALS SCIENCE↗