nickel net yes A sort of widely used for Various industry application of Material , include filter , Battery electrode and catalytic . That performance and characteristic very big degree superior receive Material Inside Grain boundaries exist of Influence . Grain boundaries yes Metal middle each grain between of interface , they exist Sure Material of mechanical , electric and thermal able aspect play With Key role .
Grain boundaries exist nickel net performance middle heaviest want of effect one yes control That mechanical strength and Ductility . Grain boundaries of exist Can as Dislocation sports of obstacle , hinder crack of Expand and mention High quality material material of overall strength . at the same time , A lot Grain boundaries of exist also Can lead to Ductility Increase , because Material exist These interface at Even easy deformation . This kind of strength and Ductility of combine for need Material bear mechanical stress and constantly crack of application crucial .
Apart from Mechanical behavior outside , Grain boundaries return Influence nickel net of conductivity and thermal conductivity . Grain boundaries of exist Can as electronic sports of obstacle , lead to Material middle of resistance Increase . However , if design appropriate , These Grain boundaries return Can Enhance Material of Thermoelectric performance , make That Suitable Thermoelectric generate electricity wait application .
also , Grain boundaries right Influence nickel net of Corrosion resistance able rise With crucial of effect . Grain boundaries of exist Can as local corrosion of place , because and grain internal compared to , they usually have different of chemical composition and structure . correct control and manipulate These Grain boundaries Can improve Corrosion resistance , make nickel net Suitable exist bad and corrosive environment middle use .
exist catalytic aspect , Grain boundaries right nickel net performance of Influence especially important . high density Grain boundaries of exist Can as Catalytic reaction of active site , because they supply Lots of surface site , and Can Promote Reactant and product of Adsorption reconciliation suck . this make nickel net become catalytic application of have value of Material , For example The fuel cell and hydrogen Production .
In short , Grain boundaries exist nickel net performance middle of effect yes Many aspects of , and right That exist Various application middle of overall Function crucial . pass learn and control Grain boundaries of exist , Research personnel and engineer Can custom made nickel net of performance by satisfy specific of performance Require , make That become material science and project field of Multifunction and have value of Material .