Sample Growth



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


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