1、Designation:C103111(Reapproved 2016)Standard Specification forNuclear-Grade Aluminum Oxide Powder1This standard is issued under the fixed designation C1031;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A n
2、umber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification provides the chemical and physicalrequirements for nuclear-grade aluminum oxide powder in-tended for fabrication into sha
3、pes for nuclear applications.Twospecific uses for which this powder is intended are Al2O3pellets and Al2O3 B4C composite pellets for use as thermalinsulator or burnable neutron absorbers,respectively.1.2 The material described herein shall be particulate innature.2.Referenced Documents2.1 ASTM Stand
4、ards:2C809 Test Methods for Chemical,Mass Spectrometric,andSpectrochemical Analysis of Nuclear-Grade AluminumOxide and AluminumOxide-Boron Carbide CompositePelletsC859 Terminology Relating to Nuclear MaterialsE105 Practice for Probability Sampling of Materials2.2 ANSI Standard:ANSI/ASME NQA-1 Qualit
5、y Assurance Requirements forNuclear Facility Applications32.3 U.S.Government Document:Code of Federal Regulations,Title 10,Part 50Energy(10CFR 50),Domestic Licensing of Production and Uti-lization Facilities43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Terms shall be defined
6、 in accordance with Terminol-ogy C859 except for the following:3.1.2 buyerorganization issuing the purchase order.3.1.3 powder lotthat quantity of aluminum oxide powdermade up of powder from one or more sources,blended togetherand homogenized such that samples taken in accordance withthe procedures
7、in Section 8 can be considered as representativeof the entire quantity.3.1.4 selleraluminum oxide manufacturer.4.Ordering Information4.1 The buyer shall specify the following information on theorder:4.1.1 Quantity(weight of delivered product),4.1.2 Lot size(allowable range),4.1.3 Sample requirements
8、,and4.1.4 Additional requirements.5.Chemical Composition5.1 The powder shall conform to the following chemicalrequirements(see Methods C809):ElementWeight%,maxSilicon2.0Iron-Chromium-Nickel0.6Magnesium1.0Sodium0.2Calcium0.3Hafnium200 g/g Al2O3Fluorine50 g/g Al2O3Fluorine-Chlorine-Iodine-Bromine100 g
9、/g Al2O3Gadolinium100 g/g Al2O3Samarium100 g/g Al2O3Europium100 g/g Al2O3Dysprosium200 g/g Al2O35.2 The impurities listed in 5.1,and any other identifiedimpurity exceeding 1.0 weight%and the total concentration ofall impurities,shall be reported.The total of all measuredimpurities shall not exceed 4
10、.0 weight%.5.3 Loss-on-IgnitionThe test method and acceptance lim-its for loss-on-ignition shall be agreed upon between the buyerand the seller.NOTE1The buyer may specify limits for any other elements(forexample,neutron absorbing materials,such as boron)not listed in 5.1.6.Physical Requirements6.1 T
11、he particle size distribution shall have a mean value of6 m or less.The particle size distribution will be determinedutilizing a method approved by the buyer.1This specification is under the jurisdiction of ASTM Committee C26 onNuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.
12、03 onNeutron Absorber Materials Specifications.Current edition approved April 1,2016.Published April 2016.Originallyapproved in 1984.Last previous edition approved in 2011 as C1031 11.DOI:10.1520/C1031-11R16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer S
13、ervice at serviceastm.org.For Annual Book of ASTMStandardsvolume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.4Available from U.S.Government Printing Office Superinten
14、dent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,D.C.,20401.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.2 Specific Surface AreaThe test method and acceptancelimits for specific surface area shall be agreed upon betwee
15、nthe buyer and the seller.7.Cleanliness7.1 The powder lot shall be handled in a manner to avoidcontamination by foreign matter such as dust,cleaning agentsand organics,and materials,such as plastics and paper,used inpackaging.Cleaning solutions,if used,shall be free of halidesand nonvolatile additiv
16、es and shall be removed from thepowder prior to sampling and packaging.8.Sampling8.1 Sampling plans to meet acceptance criteria and inspec-tion and measurement procedures that describe the method ofcompliance with this specification shall be approved by thebuyer.The degree of sampling,where not specified in thisspecification,varies with the application and for this reasonshould be specified on the purchase order.Practice E105 isreferenced as a guide.8.2 Each sample taken shall be sufficient for
