材料的制备与加工(3)ppt课件.ppt

(1)Hydroplasticity(含水塑性)whenwaterisadded,everyplastic,aconditiontermedhydroplasticity.(2)Fusiontemperaturerangeclayfusesormeltsoverarangeoftemperatures;thus,,ofcourse,positionoftheclay.(positesClaysarealuminosilicates(铝硅酸盐),posedofalumina(Al2O3)andsilica(SiO2),,positions,pounds(usuallyoxides)ofbarium,calcium,sodium,potassium(钾),andiron,anicmatter.(4)plicated;however,(高岭石)[Al2(Si2O5)(OH)4],Whenwaterisadded,,ountsfortheresultingplasticityofthewater–positesofclayproducts(1)clay-plasticingredients(2)nonclayminerals①quartzThequartzisusedprimarilyasafillermaterial,beinginexpensive,relativelyhard,andchemicallyunreactive(惰性).Itexperienceslittlechangeduringhigh-temperatureheattreatmentbecauseithasahighmeltingtemperature;whenmelted,however,quartzhastheabilitytoformaglass.②feldspar(长石)Whenmixedwithclay,aflux(熔剂);theyareagroupofaluminosilicatematerialsthatcontainKˉ,Naˉ,,thechangesthattakeplaceduringdryingandfiringprocesses,andalsothecharacteristicsofthefinishedpiece,areinfluencedbytheproportionsofthesethreeconstituents:clay,quartz,(瓷器)mightcontainapproximately50%clay,25%quartz,and25%-positions:hydroplasticforming(含水塑性成型)andslipcasting(浇铸法).(1)HydroplasticForming(含水塑性成型)clayminerals,whenmixedwithwater,ehighlyplasticandpliable(韧性)