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In order to test many physical properties of quasicrystals, samples
must be available in the form of large (millimeter- to
centimer-dimension) monoliths. Such samples must be chemically-pure,
phase-pure, and of high structural quality. We grow such samples.
Persons who are interested in scientific collaborations using such
samples may contact the scientists listed below.
1. Single grains of quasicrystals
* By Bridgeman, Czochralski, and other techniques: Tom Lograsso
icosahedral Al-Pd-Mn and approximants
icosahedral Al-Cu-Fe* By flux growth: Paul Canfield
icosahedral R-Mg-Zn (R = Rare Earth)
degaconal Al-Ni-Co
2. Consolidated powders
* By Hot Isostatic Pressing (HIPing) or by sintering: Daniel Sordelet
icosahedral Al-Cu-Fe
icosahedral Al-Pd-Mn
For many other quasicrystalline alloys, the starting materials--gas atomized powders--are on hand in Ames. See list below. These could be used to prepare either monoliths or plasma-sprayed coatings. The monoliths can be either HIPed or sintered. The coatings can be prepared either by air plasma or low-pressure plasma techniques. Contact: Daniel Sordelet.
Label Composition Size Al-147
Al71.2Cu9.8Cr10.5Fe8.5
+20/-45µ
Al-151
Al73Cr4Co10Fe13
+15/-45µ
Al-152
Al71Cr8Co12Fe8
+20/-45µ
Al-154
Al65Cu23Fe12
-45µ
Al-172
Al70Co15Ni15
-20µ
Al-172
Al70Co15Ni15
+200 mesh
Al-172
Al70Co15Ni15
-500 mesh
Al-172
Al70Co15Ni15
+200 mesh
Al-172
Al70Co15Ni15
-200/+325
Al-172
Al70Co15Ni15
-325 mesh
Al-173
Al67Fe10Cr10Cu10Si3
-20µ mesh
Al-173
Al67Fe10Cr10Cu10Si3
-200/+325 mesh
Al-173
Al67Fe10Cr10Cu10Si3
+200 mesh
Al-173
Al67Fe10Cr10Cu10Si3
-325 mesh
Al-173
Al67Fe10Cr10Cu10Si3
-500 mesh
Al-174
Al70Fe13Co10Cr7
-20µ mesh
Al-174
Al70Fe13Co10Cr7
-325 mesh
Al-174
Al70Fe13Co10Cr7
+200 mesh
Al-174
Al70Fe13Co10Cr7
+200 mesh
Al-174
Al70Fe13Co10Cr7
-200/+325 mesh
Al-174
Al70Fe13Co10Cr7
-500 mesh