Table of ContentsMicrostructureX-Ray DiffractionHardnessFabricationRecrystallizationStrengthOxidation ResistanceDiscussion of ResultsSummary As a continuing endeavor, the Bureau of Mines is developing columbium and tantalum alloys for high-temperature applications. This
Table of ContentsContact-Angle StudiesEquipment, Materials, and Test ProcedureContact-Angle ResultsMicroflotationEquipment, Materials, and Test ProcedureMicroflotation ResultsAnionic ReagentsCationic ReagentsBatch Flotation StudiesOka Pyrochlore OreDark Star Ore The purpose of
Table of ContentsExperimentPreparation of Leach LiquorTest Equipment and ProcedureResultsKinetic AnalysisKinetic Analysis of Ammonium-Manganese Sulfate Precipitation A temperature of 250° to 260° C was found to
Table of ContentsThe Texture of SurfacesEquipmentProcedure Model studies, using rock, require carefully prepared specimens. Most preparation procedures use some form of grinding or polishing as
Tests on electrorefining of yttrium were performed in LiCl-YCl3 electrolytes at 710° C, and the deposits were subjected to vacuum-distillation at 880°C to remove salt
Table of ContentsExperimental ProceduresApparatusPreparation of ChargeChlorination ProcedureLeaching ProcedureExperimental Results Low-temperature chlorination of three types of ferrochromium at 340° to 525° C chlorinated an average of
Table of ContentsCasting Experimental Ingots With the Semi-continuous Casting MachineIngot MicrostructureChemical AnalysisIngot HardnessSolidification Rate ExperimentsRolling of Slabs from Semicontinuous-Cast Ingots Sound ingots of Zn-Cu-Ti alloys
Table of ContentsDiscussion and Description of the ProblemsFiring of Electric Blasting CapsNature of Charging SourceNature of CapacitorsTime ConstantsSignificant Aspects of the Loader and Its OperatorCharge
Table of ContentsSample Preparation And Testing ProcedureSpecimen VariablesNonparallel EndsRoughened EndsExternal VariablesEnd Platen InfluenceSpherical Head Friction The major conclusion to be drawn from the four series
Table of ContentsExperimental Procedures and ResultsStatic Tests Above Melting Point of CopperDynamic Tests Above Melting Point of CopperThermal Treatment Below the Melting Point of CopperMagnetic
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