and no corroded zone was observed in neutral salt spray test for 120 h. The performance ofpassivation film was equivalent to that of SurTec -650 trivalent chromium passivation treatment. The passivation solution without hexavalentchromium had little pollution to environment.Key words:aluminum alloys;...
(HV)isimprovedto107～163from100.Inaddition,thetestresultsexhibitacertainpatternsinroughnessandhardnessatvariousprocesses.Theprocessofshotblasting treatmentisequivalenttoconductmicroforging onthesurface.Theconstantimpactofsteelballsonaluminumalloychangestheoriginalsurfacecrystalstructureofthealloy,andcausesmicro-convection...
Referencesforthisdatasheet.Someofthevaluesdisplayedabovemayhavebeenconvertedfromtheiroriginalunitsand/orroundedinordertodisplaytheinformationinaconsistentformat.Usersrequiringmoreprecisedataforscientificorengineeringcalculationscanclickonthepropertyvaluetoseetheoriginalvalueaswellasrawconversionstoequivalentunits.Weadvisethatyo...
Decimal equivalent tables can be found: A. On a chart located on the South wall of the sheet metal shop. B. On a chart located on the North wall of the sheet metal shop. C. In the Engineering & Inspection Manual. D. In the Standard Aircraft Handbook. 查看完整题目与答案 Which of...